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STUDY ON SORPTION OF HEAVY METAL POLLUTANTS BY SEDIMENT PARTICLES
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作者 Huang Sui-liangState Key Joint Laboratory of Environmental Simulation and Pollution Control (Institute ofEnvironmental Sciences), Beijing Normal University, Beijing 100875 , P. R.ChinaWan Zhao-huiChinese Institute of Water Conservancy and Hydroelectric Power Research (IWHR) , P. O.Box 366, Beijing, 100044 P.R.China 《Journal of Hydrodynamics》 SCIE EI CSCD 1997年第3期9-23,共15页
Sorption of heavy metal on sediment particles is studied theoretically am experimentally. Sorption processes of heavy metal pollutants on sediment particles can b well described by Langmuir model. Parameters in the mo... Sorption of heavy metal on sediment particles is studied theoretically am experimentally. Sorption processes of heavy metal pollutants on sediment particles can b well described by Langmuir model. Parameters in the model b,,k and k1 depend on proper ties of sediment and water, and have nothing to do with sediment concentration. By com bining the sorption dynamic equation and the mass conservation equation, the variation c N(sorption content of heavy metal pollutant by specific weight of sediment) and c (con centration of heavy metal pollutant in water phase) with time can be deduced. Further more, formulas for calculating the equilibrium sorption content N and the equilibriur concentration of heavy metal pollutant in water phase c are established too. Experimenta data well coincide with theoretical formulas. These can be treated as the basis for furthe quantitative study of sediment sorption-desorption characteristics. 展开更多
关键词 heavy metal pollutants sediment particles sorptkm
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Progress in the Treatment of Heavy Metal Pollution of Water Sediment
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作者 Ruqi YI Yongfeng FAN +1 位作者 Chenhao LIANG Lidan CAI 《Asian Agricultural Research》 2024年第7期33-35,41,共4页
In recent years,as China's industrialization process and urban-rural integration strategy have continued to deepen,some industrial and domestic wastewater has been discharged directly into rivers without effective... In recent years,as China's industrialization process and urban-rural integration strategy have continued to deepen,some industrial and domestic wastewater has been discharged directly into rivers without effective treatment.This has resulted in the continuous accumulation and enrichment of pollutants in water bodies.This phenomenon results in a significant accumulation of heavy metals in the sediment of water bodies,which not only represents a significant threat to the ecological environment but also ultimately poses a risk to human health.The objective of this study is to provide a comprehensive review of the current status of heavy metal pollution in water sediment in China.In addition,this paper analyzes the advantages and limitations of existing techniques for the harmless treatment of heavy metal pollution and forecasts the development direction of this field. 展开更多
关键词 sediment heavy metal pollution Treatment technology Ecological civilization
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STUDY ON THE EFFECT OF SEDIMENT MOTION ON TRANSPORT TRANSFORMATION OF HEAVY METAL POLLUTANTS 被引量:5
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作者 Huang Sui-liangInstitute of Water Concervancy and Hydroelectric Power Research, Beijing 100044, P. R. ChinaSupervisor Prof. Wan Zhao-huiInstitute of Water Conservancy and Hydroelectric Power Research, Beijing 100044, P. R. China 《Journal of Hydrodynamics》 SCIE EI CSCD 1994年第3期97-102,共6页
By combining laboratorial experiments,theoretical analysis and mathematical model,theeffect of sediment motion on transport-transformation of heavy-metal pollutants is studied. (1)Previous studies on adsorption-desorp... By combining laboratorial experiments,theoretical analysis and mathematical model,theeffect of sediment motion on transport-transformation of heavy-metal pollutants is studied. (1)Previous studies on adsorption-desorption of heavy-metal pollutants by sedimentparticles are systematically summarized.Based on this summary,subjects that need to be furtherstudied are put forward. In rivers most heavy-metal pollutants concentrate on sediment particles.In order tocontrolling water pollution aused by heavy-metal pollutants following topics should beemphasized:studies on the effect of suspended matter and deposit on transport-transformation of 展开更多
关键词 STUDY ON THE EFFECT OF sediment MOTION ON TRANSPORT TRANSFORMATION OF heavy metal pollutants
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Heavy metal pollution assessment in marine sediments in the Northwest coast of Sabah,Malaysia 被引量:1
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作者 Sin-Yi Ling Asis Junaidi +1 位作者 Abdullah Mohd-Harun Musta Baba 《China Geology》 CAS CSCD 2023年第4期580-593,共14页
Heavy metal contents along the Northwest coast of Sabah were determined to interpret the pollution level in the marine sediment. The metal abundance is regulated by the physico-chemical properties such as the average ... Heavy metal contents along the Northwest coast of Sabah were determined to interpret the pollution level in the marine sediment. The metal abundance is regulated by the physico-chemical properties such as the average sediment pH(7.82, 9.00 and 8.99), organic matter(0.62%, 1.60%, and 2.27%), moisture content(25.00%, 29.70%, and 15.00%) and sandy texture in Kota Belud, Kudat and Mantanani Island,respectively. The major elements show Ca>Fe>Mg>Al>Mn for all study sites, while the heavy metals show Ni>Cr>Zn>Cu>Co>Pb, Cr>Ni>Zn>Cu>Pb>Co and Zn>Pb>Cr>Ni, for Kota Belud, Kudat and Mantanani Island, respectively. The pollution degree of heavy metals was evaluated by using the Sediment Quality Assessment(SQA). The SQA parameters indicated none to moderate pollution in Kota Belud that shows Class 0, Class 1 and Class 2 pollution. The parameters also indicated none to low pollution in Kudat and Mantanani Island that show only Class 0 pollution. The enrichment factor(EF) suggested minor to moderately severe metal enrichment by anthropogenic sources in Kota Belud, whereas only minor enrichment in Kudat and Mantanani Island. The modified pollution degree(MCD<1.5) and pollution load index(0 PLI<1) indicating only low pollution level in the marine sediments for all study sites. The objectives of this study are:(1) to determine the physico-chemical parameters of sediments,(2) interpret the heavy metal contents and(3) evaluate the sediment quality. 展开更多
关键词 Physico-chemical properties sediment quality Major elements heavy metal pollution Ni-Cr-Zn-Cu-Co-Pb pollution Marine sediment COASTLINE
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Fractionation of heavy metals in shallow marine sediments from Jinzhou Bay,China 被引量:22
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作者 Shaofeng Wang, Yongfeng Jia, Shuying Wang, Xin Wang, He Wang, Zhixi Zhao, Bingzhu LiuKey Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2010年第1期23-31,共9页
This work investigated the distribution and speciation of Cd, Cu, Pb, Fe and Mn in the shallow sediments of Jinzhou Bay, Northeast China, which has been heavily contaminated by nonferrous smelting activities. The conc... This work investigated the distribution and speciation of Cd, Cu, Pb, Fe and Mn in the shallow sediments of Jinzhou Bay, Northeast China, which has been heavily contaminated by nonferrous smelting activities. The concentrations of Cd, Cu and Pb in sediments were found to be 100, 13 and 7 times, respectively, being higher than the national guideline (GB 18668-2002). Sequential extraction test showed that 39%-61% of Cd were exchangeable fractions, indicating that Cd in the sediments posed a high risk to local environments. While Cu and Pb were at moderate risk levels. According to the relationships between percentage of metal speciation and total metal concentration, it was concluded that the distributions of Cd, Cu and Pb in some geochemical fractions were dynamic in the process of pollutants migration and the stability of metals in sediments of Jinzhou Bay decreased in the order of Pb 〉 Cu 〉 Cd. 展开更多
关键词 heavy metals sediment pollution FRACTIONATION Jinzhou Bay risk assessment
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Heavy metal pollution in tidal zones of Bohai Bay using the dated sediment cores 被引量:11
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作者 QIN Yan-wen MENG Wei ZHENG Bing-hui SU Yi-bin 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2006年第3期610-615,共6页
Three sediment cores were collected in November 2003 from Dagu estuary to Qikou estuary. The main polluted heavy metals in the sediment of tidal zones for the Bohai Bay have been found by analyzing the relationship am... Three sediment cores were collected in November 2003 from Dagu estuary to Qikou estuary. The main polluted heavy metals in the sediment of tidal zones for the Bohai Bay have been found by analyzing the relationship among the contents of heavy metals, the contents of geochemical elements (Fe, AI and Mn) and the size of grain. The dominating contaminative elements in tidal sediments of Bohai Bay are Pb, Zn and Cd. Their contents are higher than the corresponding upper limit of environmental background values and they have very faint correlation with the corresponding contents of geochemical elements and the size of grain, indicating the anthropogenic enrichment. Especially, the preliminary study on the pollution sources and the history of heavy metals in the Dagu estuary has been done using the dated results. The contamination by Zn and Cd also started in the middle 1950s, while the contamination by Pb appeared in the early 1940s. The pollution by Zn and Cd mainly originate from sewage discharge, while the pollution by Pb has many sources, like atmosphere deposition and industrial discharRe. 展开更多
关键词 Bohai Bay tidal zone the dated sediment core heavy metal POLLUTION
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Assessment of Heavy Metal Pollution in Estuarine Surface Sediments of Tangxi River in Chaohu Lake Basin 被引量:19
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作者 LI Ruzhong SHU Kun +1 位作者 LUO Yueying SHI Yong 《Chinese Geographical Science》 SCIE CSCD 2010年第1期9-17,共9页
A total of 30 surface sediments samples from the estuary wetland of the Tangxi River, Chaohu Lake Basin were obtained and tested. Enrichment factor (EF) and geoaccumulation index (Igeo) as well as multivariate sta... A total of 30 surface sediments samples from the estuary wetland of the Tangxi River, Chaohu Lake Basin were obtained and tested. Enrichment factor (EF) and geoaccumulation index (Igeo) as well as multivariate statistical analysis methods including Factor Analysis (FA) and Hierarchical Cluster Analysis (HCA) were applied for the assessment of heavy metal pollution in surface sediments. The results of EF values show that the pollution of copper (Cu) and cadmium (Cd) occurs in the estuarine sediments, and that zinc (Zn), lead (Pb) and chrome (Cr) may originate from crustal materials or natural weathering process. The mean EF values of the five heavy metals are in the decreasing order: Cu〉Cd)Zn〉Pb〉Cr. Based on the lgeo of target heavy metals, the surface sediments collected from the study area can be approximately categorized as unpolluted with Zn, Pb and Cr, and moderately polluted with Cu and Cd. The degree of heavy metal pollution decreases in the order of Cu〉Cd〉Zn〉Pb〉Cr. Three groups of pollution factors are presented from FA: Zn-TOC, Cu-Cd and Cr-Pb, which respectively accounte for 27.22%, 25.20% and 21.05% of variance. By means of HCA, a total number of seven groups are distinguished from 30 sampling sites. Results indicate that Cu and Cd are the prior controlled pollutants in the estuarine sediments of the Tangxi River. 展开更多
关键词 heavy metal pollution sediment ESTUARY multivariate analysis Chaohu Lake Basin
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Heavy metals partitioning in the sediments of Izmir Inner Bay 被引量:7
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作者 GUVEN Duyusen E AKINCI Gorkem 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2008年第4期413-418,共6页
Izmir Bay is known to be polluted by high concentrations of heavy metals and organic pollutants. Sediment samples taken from 7 different stations in Izmir Inner Bay were analyzed for their total organic matter content... Izmir Bay is known to be polluted by high concentrations of heavy metals and organic pollutants. Sediment samples taken from 7 different stations in Izmir Inner Bay were analyzed for their total organic matter content and, Cu, Cr, Pb and Zn. In addition, the chemical distribution of the metals were determined by means of the BCR (Community Bureau of Reference) Extraction Procedure (developed by European Commission for Standards, Measurement and Testing) which allows the determination of metals bound as four fractions; exchangeable and acid soluble, reducible (bound to iron-manganese oxides), oxidizable (bound to organics) and residual. The results show that Izmir Inner Bay contains sediments with high metal concentrations. According to the chemical distribution of metals, Cr and Cu tend to accumulate mostly on the organic fraction of the sediment. Pb is mostly found in the reducible fraction where Zn is mobile in the sediment, and it is distributed evenly on each fraction. 展开更多
关键词 heavy metal pollution Izmir Inner Bay sediment sequential extraction
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Heavy metals pollution in water,suspended matter and surface sediment in typical mountainous urban river:A case study in Qingshui Stream in Chongqing,China 被引量:4
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作者 何太蓉 李百战 +1 位作者 李贤良 刘存东 《Journal of Central South University》 SCIE EI CAS 2009年第S1期286-291,共6页
Based on a detailed environmental investigation of the whole Qingshui Stream catchments,samples of water and surface sediments were collected at 15 different places from the upper to the lower reaches of Qingshui Stre... Based on a detailed environmental investigation of the whole Qingshui Stream catchments,samples of water and surface sediments were collected at 15 different places from the upper to the lower reaches of Qingshui Stream,and samples of suspended matter were obtained by filtrating the water samples. The concentrations of heavy metals (Cd,Cu and Zn) were measured in filtered water,suspended matter,and surface sediment by ICP-AES. The results show that the concentrations of the three heavy metals in filtered water are 0.18,6.6 and 17.67 μg/L,lower than that of the Fresh Water Quality Criteria (US EPA) and those of the plain urban rivers,but the contents of Cd,Cu and Zn are much higher than the mean values of rivers in the world and the background value in Jialing River basin. The heavy metals concentrations in the suspended matter from Qingshui Stream are 2.08,438.14 and 1 348.05 mg/kg,much higher than the corresponding background values of soils in Chongqing city. The heavy metals concentrations in the surface sediment from Qingshui Stream are 0.84,189.75 and 838.23 mg/kg,and the values of index of geoaccumulation Igeo of Cd,Cu and Zn show that their pollution degrees are moderate. The heavy metals exist in three transferable forms such as water,suspended matter and surface sediment in Qingshui Stream. The heavy metals concentrations in water are the lowest,and those in the suspended matter are the highest,so the ecological risk in suspended matter is the highest. The distribution tendencies of three metals in water,suspended matter and surface sediment in main riverbed are different. 展开更多
关键词 heavy metal WATER suspended MATTER surface sediment POLLUTION Qingshui STREAM
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Distribution and their pollution assessment of heavy metals in the sediments of the Yalu River Estuary and its adjacent coastal waters 被引量:4
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作者 GAO Jianhua LI Jun +5 位作者 Wang Harry V WANG Yaping WANG Zhenyan BAI Fenglong GAO Shu CHENG Yan 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2009年第6期12-23,共12页
The present paper deals with the distribution patterns of heavy metals and the associated influenc- ing factors in the Yalu River Estuary and its adjacent coastal waters. Based upon the analysis of the surficial and c... The present paper deals with the distribution patterns of heavy metals and the associated influenc- ing factors in the Yalu River Estuary and its adjacent coastal waters. Based upon the analysis of the surficial and core sediments measurements, the pollution of heavy metal and potentiM ecological risk were evaluated. The burial flux and contents of heavy metals (except for copper) have been continuously increasing since the 1920s. Therefore, the gross potential ecological risk for the sedi- ments was high or very high, and the study area was endangered by heavy metals contamination. Heavy metals originated mainly from upstream pollutant input, correlation analysis showed that chromium, nickel, zinc~ cadmium, lead, arsenic, and mercury in the sediments of the middle and west channels as well as the sea area of the western Yalu River Estuary concentrations were most probably derived from similar sources. In contrast, the metal of copper most probably originated from sources different from the other metals. Preliminary studies indicate that copper contamina- tion was most likely the result of emission from mining activities situated at the upstream of the river. The contents of heavy metals in the sediments of estuarine turbidity maximum zone of Yalu River were larger than those of any other areas in the middle channel. With large portion of fine sediments, weaker hydrodynamics, and richer sources of heavy metals, the sediments of the west channel, were even more enriched with heavy metals than those of the middle channel. 展开更多
关键词 heavy metals sediment pollution DISTRIBUTION ACCUMULATION Yalu River
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THE RESEARCH ON THE DISTRIBUTION AND FORMS OF HEAVY METALS IN THE XIANGJIANG RIVER SEDIMENTS 被引量:3
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作者 董文江 张立成 章申 《Chinese Geographical Science》 SCIE CSCD 1992年第1期43-56,共14页
In this paper, the contents and various forms of Cd, Cu, Zn and Pb in the sediments of the Xiangjiang River have been investigated. The presentation of this paper focuses on the various forms and characteristics of th... In this paper, the contents and various forms of Cd, Cu, Zn and Pb in the sediments of the Xiangjiang River have been investigated. The presentation of this paper focuses on the various forms and characteristics of the heavy metals in the column sediments at Xiawan Port of Zhuzhou, which has been severely polluted by a metallurgical plant.The forms of the heavy metals discussed in this paper are: The concentration of the exchangeable forms of Cd, Cu, Zn and Pb, in the forms of carbonates and Fe/ Mn oxide in water, the combination of Cu with organic matter and form, and the proportion of the residue form at each section have been studied. 展开更多
关键词 RIVER sedimentS FORMS of heavy metals water POLLUTION the Xiangjiang RIVER
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Water Quality and Heavy Metal Monitoring in Water, Sediments, and Tissues of the African Catfish Clarias gariepinus (Burchell, 1822) from the River Nile, Egypt 被引量:13
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作者 Alaa G. M. Osman Werner Kloas 《Journal of Environmental Protection》 2010年第4期389-400,共12页
Water quality of the river Nile and trace elements of the water, sediments and fish tissues were investigated in the current work. Eighteen different sampling points were selected along the whole course of the River N... Water quality of the river Nile and trace elements of the water, sediments and fish tissues were investigated in the current work. Eighteen different sampling points were selected along the whole course of the River Nile from its spring at Aswan to its estuaries at Rosetta and Damietta. Higher mean value of conductivity, alkalinity, chemical oxygen demand (COD), total organic carbon (TOC), ammonia (NH3), nitrate (NO3), total solid (TS), sulphate (SO4), chloride (Cl), orthophosphate were recorded in the water of Damietta and Rosetta branches comparing to other sites. Also trace metals in the water, sediments and tissues of Clarias gariepinus increased significantly (P Fe > Cu > Pb > Mn > Cr> Cd > Hg. In the gill tissues theses metals were accumulated in the following order Fe > Zn > Mn > Pb > Cr > Cu > Cd> Hg. The low accumulation of metals in muscle may be due to lack of binding affinity of these metals with the proteins of muscle. This is particularly important because muscles contribute the greatest mass of the flesh that is consumed as food. 展开更多
关键词 WATER Quality sediment RIVER NILE Clarias gariepinus heavy metals AQUATIC Pollution
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Heavy Metal Pollution and Ecological Risk Assessment in Sediments of Xiling Channel Inland Waterway of Guangdong Province 被引量:7
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作者 Jianqiao QIN Xiaoping HUANG 《Asian Agricultural Research》 2019年第6期40-46,49,共8页
Using the sediment monitoring data of five sections of the Xiling Channel inland waterway of the Pearl River Delta,and using Nemerow composite index,the coefficient of variation,and the index of geoaccumulation( Igeo)... Using the sediment monitoring data of five sections of the Xiling Channel inland waterway of the Pearl River Delta,and using Nemerow composite index,the coefficient of variation,and the index of geoaccumulation( Igeo) and the potential ecological risk index,this paper analyzed and assessed the heavy metal pollution of sediments. The results indicate that Cr reached mild pollution;Cu had a large degree of variation,and the changes of Cr and Zn were significant with fluctuation;the enrichment of heavy metals decreased as follows: Cd > Cu > Cr > Zn> Pb > Ni > Hg > As;Cd had the highest degree of enrichment and belonged to moderate pollution;the ecological hazard of heavy metals was Cd > Hg > Cu > Pb > As > Cr > Ni > Zn,and Cd had the highest ecological hazard and was the main controlling factor of potential ecological risk. In conclusion,the sediments in Xiling Channel inland waterway were polluted by heavy metals to some extent,and cadmium was the main pollutant and had the largest potential ecological risk. 展开更多
关键词 Xiling CHANNEL INLAND WATERWAY sediment heavy metal pollution
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Content and Ecological Risk Assessment of Heavy Metals in Surface Sediment in Weishan Lake 被引量:6
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作者 JIANG Wan-xiang Department of Life Sciences,Zaozhuang University,Zaozhuang 277160,China 《Meteorological and Environmental Research》 CAS 2011年第5期65-67,70,共4页
[Objective] The aim was to analyze the content of heavy metals in surface sediment in Weishan Lake and further assess its ecological risk.[Method] Heavy metal pollution in surface sediment in Weishan Lake was studied,... [Objective] The aim was to analyze the content of heavy metals in surface sediment in Weishan Lake and further assess its ecological risk.[Method] Heavy metal pollution in surface sediment in Weishan Lake was studied,and the pollution indices and potential ecological risk indices of Cu,Zn,Pb,Cd and Cr were calculated to assess the potential ecological risk of heavy metal pollution.[Result] In surface sediment in Weishan Lake,the average contents of Cu,Zn,Pb,Cd,Cr and Ni were 64.78,185.05,78.76,0.17,37.76 and 46.84mg/kg respectively.Cr and Cd weren’t beyond standards in all stations,while Cu and Pb exceeded standards in all stations,with average super-standard multiple of 0.85 and 0.31,respectively,and Zn content wasn’t beyond standard in S2 station,with average super-standard multiple of 0.24.The average pollution indices of Cu,Zn,Pb,Cd and Cr were 1.85,1.23,1.31,0.34 and 0.47 respectively,with average comprehensive pollution index of 5.21,which showed that heavy metal pollution was light.In addition,heavy metal pollution in entryway portion and sea-route portion were more serious than that of breeding portion.Potential ecological risk assessment showed that the average potential ecological risk indices of Cu,Zn,Pb,Cd and Cr were 9.25,1.23,6.56,10.34 and 0.94 respectively,with average comprehensive potential ecological risk index of 28.33,and it revealed that potential ecological risk of heavy metals was slight.Besides,the potential ecological risk order of heavy metal pollution was sea-route portion>entryway portion>breeding portion.[Conclusion] The study could provide references for the regulation and improvement of ecological environment in Weishan Lake in the east route of south-to-north water transfer project. 展开更多
关键词 Weishan Lake sediment heavy metal Potential ecological risk assessment Comprehensive pollution index China
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Simulation on release of heavy metals Cd and Pb in sediments 被引量:5
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作者 Hong-jie YAN He-yang ZHANG +4 位作者 Ya-jun SHI Ping ZHOU Huan LI Dong-ling WU Liu LIU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第1期277-287,共11页
The re-release process and the release rate of heavy metals,cadmium and plumbum,which are rich in sediments of a certain water area,were investigated using a combined experimental and numerical method.Results show tha... The re-release process and the release rate of heavy metals,cadmium and plumbum,which are rich in sediments of a certain water area,were investigated using a combined experimental and numerical method.Results show that the release law of Cd and Pb in sediments is divided into two stages:rapid release and dynamic equilibrium,which is in great agreement with the pseudo second-order kinetic equation with a correlation coefficient R2 above 0.99.As the flow velocity accelerates,the release rate of heavy metals increases.The analysis results indicate that the water quality in the area can exceed the surface water Class V standard less than 3 h,and all but one of the relative deviations between the simulation value and the field survey result are within±10%. 展开更多
关键词 sediment heavy metal pollution re-release rate numerical simulation
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Assessment of heavy metals in sediment in a heavily polluted urban river in the Chaohu Basin, China 被引量:3
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作者 邵世光 薛联青 +4 位作者 刘成 商景阁 王兆德 何翔 范成新 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2016年第3期526-538,共13页
The Nanfei River (Anhui Province, China) is a severely polluted urban river that flows into Chaohu Lake. In the present study, sediments were collected from the river and analyzed for their heavy metal contents. Mul... The Nanfei River (Anhui Province, China) is a severely polluted urban river that flows into Chaohu Lake. In the present study, sediments were collected from the river and analyzed for their heavy metal contents. Multivariate statistics and the fuzzy comprehensive assessment method were used to determine the sources of pollution, the current pollution status, and spatial and temporal variations in heavy metal pollution in sediments. The concentrations of arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), lead (Pb), and zinc (Zn) in sediments ranged from 5.67-113, 0.08-40.2, 41.6-524, 15.5-460, 0.03-4.84, 13.5-180, 18.8-250, and 47.9-1 996 mg/kg, and the average concentrations of each metal were 1.7, 38.7, 1.8, 5.5, l 8.8, 1.3, 2.5, and 11.1 times greater than the background values, respectively. Multivariate statistical analysis demonstrated that Hg, Cu, Cr, Cd, and Ni may have originated from industrial activities, whereas As and Pb came from agricultural activities. The fuzzy comprehensive assessment method, based on the fuzzy mathematics theory, was used to obtain a detailed assessment of the sediment quality in the Nanfei River watershed. The results indicated that the pollution was moderate in the downstream tributaries of the Nianbu and Dianbu Rivers, but was severe in the main channel of the Nanfei River and in the upstream tributaries of the Sill and Banqiao Rivers. Therefore, sediments in the Nanfei River watershed are heavily polluted and urgent measures should be taken to remedy the status. 展开更多
关键词 fuzzy comprehensive assessment (FCA) heavy metal pollution changing process distribution characteristics Nanfei River sediment
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Developing sediment quality criteria for heavy metal pollution in the Le An River with equilibrium partitioning approach 被引量:2
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作者 Liu Wen xin, Tang Hong xiao Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1998年第4期16-21,共6页
Equilibrium partitioning(EqP) approach was selected to establish the sediment quality criteria(SQC) in the Le An River near Dexing Copper Mine. Both freshwater quality criteria (WQC) for some heavy metals regulated b... Equilibrium partitioning(EqP) approach was selected to establish the sediment quality criteria(SQC) in the Le An River near Dexing Copper Mine. Both freshwater quality criteria (WQC) for some heavy metals regulated by USEPA and national quality standards of surface water recommended by CNEPA were used as protective levels of aquatic organisms in this study. Meanwhile, the partitioning coefficients were derived directly from measured data. Comparison between SQC in this region and concentrations of contaminants in situ clearly indicated the distribution characteristics of metal contamination along the river. And the results also illustrated that measures of some metals exceeded their SQC levels in different degree, especially Cu. 展开更多
关键词 sediment quality criteria equilibrium partitioning Le An River heavy metal pollution.
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Geochemical Characteristics of Heavy Metals in Riparian Sediment Pore Water of Songhua River, Northeast China 被引量:2
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作者 ZHU Hui YAN Baixing +2 位作者 PAN Xiaofen YANG Yuhong WANG Lixia 《Chinese Geographical Science》 SCIE CSCD 2011年第2期195-203,共9页
This study reports the geochemical characteristics of zinc (Zn), copper (Cu), lead (Pb), nickel (Ni), mercury (Hg), iron (Fe), and manganese (Mn) in the riparian sediment pore water of the Songhua River, Northeast Chi... This study reports the geochemical characteristics of zinc (Zn), copper (Cu), lead (Pb), nickel (Ni), mercury (Hg), iron (Fe), and manganese (Mn) in the riparian sediment pore water of the Songhua River, Northeast China. In total, 36 pore water samples and 18 surface water samples from three typical sections were collected and analyzed in June 2009. Cluster analysis of heavy metals was performed to analyze the pollution sources of the metals. Results showed that Hg concentrations in the pore water were greater than those in the surface water, indicating a potential ability of Hg release from riparian sediment system to river water. However, concentrations of Fe and Mn in the surface water were greater than those in the pore water, demonstrating that the microenvironments of riparian and riverbed sediment systems were quite different. Variations of Zn, Cu, Pb and Ni between the surface and the pore water were different in each section. Most metals had similar horizontal and profile distribution characteristics in the three sections except for Zn and Ni. Hg, Fe and Mn concentrations in the pore water increased gradually with the increase in horizontal distance from water body, in contrast to this, Cu decreased, and Pb presented a fluctuating trend. With the increase in depth, Pb and Fe, Cu and Mn showed the same trends, and Hg showed a variable trend. The above distribution characteristics could mainly be attributed to the properties and the interactions of metals, pH and oxidation-reduction conditions, and the complex pollution sources and hydrologic regime in history. The probable sources of metals include the historical and ongoing discharge of industrial wastewater, mining activities, sewage irrigation for agricultural production, and atmospheric deposition from coal-fired plants. 展开更多
关键词 heavy metal riparian sediment pore water water pollution Songhua River
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Assessment of heavy metals in sediment cores from Xiangjiang River,Chang-Zhu-Tan region,Hunan Province,China 被引量:2
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作者 龙永珍 戴塔根 +1 位作者 池国祥 杨柳 《Journal of Central South University》 SCIE EI CAS 2012年第9期2634-2642,共9页
Samples were collected from two core sediments(C1 and C2) of Xiangjiang River,Chang-Zhu-Tan region,Hunan Province,China.The heavy metal contents are relatively higher,especially for the surface or near the surface lay... Samples were collected from two core sediments(C1 and C2) of Xiangjiang River,Chang-Zhu-Tan region,Hunan Province,China.The heavy metal contents are relatively higher,especially for the surface or near the surface layers.The calculated anthropogenic factor values indicate that all the heavy metals except for Cr in the core samples are enriched,especially for Cd,with the maximum enriching coefficients of 119.44,and 84.67 in C1 and C2,respectively.The correlation of heavy metals with sulphur indicates that they are precipitated as metal sulphides.Correlation matrix shows significant association between heavy metals and mud.Factor analysis identifies that signified anthropogenic activities affect the region of Xiangjiang River. 展开更多
关键词 heavy metals core sediment POLLUTION Xiangjiang River Chang-Zhu-Tan region
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Application of face-graph in heavy metal pollution assessment in river sediment 被引量:1
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作者 Jia Zhenbang Zhao Zhijie(Geography Department, Peking University,Beijing 100871, China)Zhang Hui(Chinese Research Academy of Environmental Sciences,Beijing, China)Zhang Baoquan Zhao Lihua(Environmental Protection Survey Station, Benxi, China) 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1994年第2期206-214,共9页
On the basis of sedimentation principles and environmental chemical characteristics of heavymetal, combine international new methods-face graph on heavy metal pollution assessment withmulti-variable graph expression, ... On the basis of sedimentation principles and environmental chemical characteristics of heavymetal, combine international new methods-face graph on heavy metal pollution assessment withmulti-variable graph expression, the article made a synthetical assessment study on state of heavymetal pollution and potential ecological risk of Taizi River sediment in Benxi City reach. The re-sults of the study indicated that the state of heavy metal pollution of Taizi River in Benxi Cityreach is very serious, appropriate counter measures should be taken. 展开更多
关键词 face graph heavy metal pollution sediment potential ecological risk index.
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