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Development of analytical methods for polycyclic aromatic hydrocarbons (PAHs) in airborne particulates: A review 被引量:10
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作者 LIU Li-bin LIU Yan +3 位作者 LIN Jin-ming TANG Ning HAYAKAWA Kazuichi MAEDA Tsuneaki 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第1期1-11,共11页
In the present work, the different sample collection, pretreatment and analytical methods for polycyclic aromatic hydrocarbons (PAHs) in airborne particulates is systematacially reviewed, and the applications of the... In the present work, the different sample collection, pretreatment and analytical methods for polycyclic aromatic hydrocarbons (PAHs) in airborne particulates is systematacially reviewed, and the applications of these pretreatment and analytical methods for PAHs are compared in detail. Some comments on the future expectation are also presented. 展开更多
关键词 polycyclic aromatic hydrocarbons pahs) airborne particulates analytical methods REVIEW
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含过氧键化合物在土壤及地下水PAHs污染修复中的应用进展 被引量:2
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作者 韩跃鸣 代朝猛 +2 位作者 段艳平 刘曙光 张亚雷 《材料导报》 EI CAS CSCD 北大核心 2024年第6期248-254,共7页
土壤及地下水中多环芳烃(PAHs)污染的修复治理是当前亟需解决的问题,其中基于含过氧键化合物的高级氧化技术由于对土壤及地下水中PAHs具有高效的降解能力,在近年来受到越来越多的关注。本文重点总结了过氧化氢、过硫酸盐以及过氧乙酸在... 土壤及地下水中多环芳烃(PAHs)污染的修复治理是当前亟需解决的问题,其中基于含过氧键化合物的高级氧化技术由于对土壤及地下水中PAHs具有高效的降解能力,在近年来受到越来越多的关注。本文重点总结了过氧化氢、过硫酸盐以及过氧乙酸在土壤及地下水中PAHs污染修复方面的研究,从过氧键断裂产生自由基的角度讨论了其活化机制与降解机理,探究了过氧乙酸在土壤及地下水中PAHs污染修复中的应用前景,分析了影响修复效率的主要外部因素。总体来看,不同活化方式所产生的自由基种类有所不同,对PAHs污染的修复效果也有所差异,与此同时,土壤及地下水复杂环境因素对修复效果有着重要的影响。因此在未来的研究中应开发新型活化材料,提高修复效果并降低二次污染,同时需针对不同的土壤及地下水环境选择合适的活化方式,采用表面活性剂增强氧化剂的修复范围,在过氧乙酸修复PAHs污染方面开展更深入的研究。含过氧键化合物修复PAHs污染土壤及地下水是一个值得深入研究的领域,未来具有广阔的应用前景,本综述为此提供了理论基础。 展开更多
关键词 高级氧化技术(AOPs) 过氧键 多环芳烃(pahs) 土壤及地下水
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Distribution and Sources of Polycyclic Aromatic Hydrocarbon (PAH) in Marine Environment of China 被引量:3
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作者 郑金树 Bruce J.Richardson +1 位作者 O.Shouming 郑建华 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2004年第2期136-145,共10页
Polycyclic aromatic hydrocarbons (PAHs) are potentially carcinogenic and mutagenic compounds that have raised considerable environmental concern. The highest concentrations of PAHs in the coastal sediment samples in C... Polycyclic aromatic hydrocarbons (PAHs) are potentially carcinogenic and mutagenic compounds that have raised considerable environmental concern. The highest concentrations of PAHs in the coastal sediment samples in China was 5.8-11.0μg/g (dry weight) in the core from the Huangpu River, Shanghai. The second highest concentration of PAHs was 4.42μg/g (dry weight) in surface sediment of Victoria Harbour in Hong Kong, and 5.73μg/g (dry weight) in sediment of Jiaozhou Bay, Qingdao City. The low concentrations of PAHs were always in the sediments far away from industrial zones and cities, and ranged from 0.10 to 0.30μg/g (dry weight). Several environmental parameters are considered for the identification of sources of PAHs in marine environment. High proportion of naphthalene, low molecular weight PAHs and alkylated PAHs, plus high ratio of phenanthrene to anthracene (>15) and low ratio of fluoranthene to pyrene (<1) suggested a petrogenic source. According to these parameters, the Changjiang (Yangtze) River estuary of Shanghai, Jiaozhou Bay of Qingdao City, Zhujiang (Pearl) River mouth, Jiulong River mouth and most of Hong Kong coastal waters were heavily contaminated by PAHs from petrogenic sources. However, PAHs in rural coastal areas were dominated by pyrolytic origin PAHs. This review clearly showed that oil pollution and incomplete combustion of oil, coal and biomass are the main reason for PAHs anormalies in the study areas. 展开更多
关键词 polycyclic aromatic hydrocarbon (pah) marine pollution China coastal areas environmental protection
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焦化厂污染土壤中18种PAHs分布特征及健康风险评估 被引量:1
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作者 张守文 李咏梅 +5 位作者 王彩 李恒宇 李晨 徐绍英 孙宁 董周宾 《生态与农村环境学报》 CAS CSCD 北大核心 2024年第2期266-275,共10页
为研究焦化厂土壤中多环芳烃(PAHs)的污染特征及其健康风险,以某焦化厂为目标,布设260个点位,根据各点位污染情况,采集不同深度的土壤样品共780件。通过分析样品中18种PAHs含量,探讨了不同判定标准下厂区土壤中PAHs总体污染程度以及不... 为研究焦化厂土壤中多环芳烃(PAHs)的污染特征及其健康风险,以某焦化厂为目标,布设260个点位,根据各点位污染情况,采集不同深度的土壤样品共780件。通过分析样品中18种PAHs含量,探讨了不同判定标准下厂区土壤中PAHs总体污染程度以及不同功能区污染状况特征,同时根据HJ 25.3—2019《建设用地土壤污染风险评估技术导则》对厂区内18种PAHs进行健康风险评价。结果表明:(1)该焦化厂污染水平较高,且厂区污染在空间上表现出强烈非均质性。厂区内PAHs以2~3环为主,占比为58.82%,4~6环PAHs占比为41.48%。厂区内以苯并[a]芘为基准的6种主要风险PAHs的毒性当量浓度(TEQ Bap)分布特征与总PAHs(∑18 PAHs)含量分布具有一致性。(2)不同功能区表层土壤PAHs含量均值从高到低依次为污水处理区>化产区>焦炉区>锅炉发电厂>煤炭储存区>办公区。不同功能区低环与中高环PAHs含量比值不同,表明各区域污染物来源存在差异。(3)厂区内主要健康风险来源于化合物的致癌风险,不同功能区的致癌风险水平差异较大,污水处理区致癌风险超标倍数及超标率远超化产区及焦炉区。由于苯并[j]荧蒽的加入,PAHs总致癌风险增加0.93%~204.46%,厂区内总致癌风险超标点位增加5个。 展开更多
关键词 焦化厂 污染土壤 多环芳烃 分布特征 健康风险评估
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Ultrasensitive Detection of Polycyclic Aromatic Hydrocarbons(PAHs) in Water Using Three-Dimensional SERS Substrate Based on Porous Material and pH 13 Gold Nanoparticles
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作者 SHI Xiaofeng YAN Xia +4 位作者 ZHANG Xinmin MA Lizhen ZHANG Xu WANG Chunyan MA Jun 《Journal of Ocean University of China》 SCIE CAS CSCD 2019年第6期1523-1531,共9页
Sensitivity is crucially important for surface-enhanced Raman spectroscopy(SERS)application to detect trace-level polycyclic aromatic hydrocarbons(PAHs)in the seawater.In this study,a high sensitivity three-dimensiona... Sensitivity is crucially important for surface-enhanced Raman spectroscopy(SERS)application to detect trace-level polycyclic aromatic hydrocarbons(PAHs)in the seawater.In this study,a high sensitivity three-dimensional(3-D)SERS substrate composed with syringe filter,glycidyl methacrylate-ethylene dimethacrylate(GMA-EDMA)porous material and optimal parameters(57 nm,pH 13)gold nanoparticles(Au NPs)was developed for the detection of PAHs in water.The enhancement effect and repeatability of this 3-D substrate were also explored.The Raman intensity of pyrene using 3-D SERS substrate is about 8 times higher than that of substrate only using p H 13 gold colloid solution and about 12 times higher than that of substrate using natural Au NPs and GMA-EDMA porous material,which means both the pH 13 AuN Ps and the GMA-EDMA porous material are important factors for the sensitivity of this 3-D SERS substrate.Good repeatability of this optimal 3-D substrate was obtained.The relative standard deviation(RSD)is less than 8.66% on the same substrate and less than 3.69% on other different substrates.Four kinds of PAHs,i.e.,phenanthrene,pyrene,benzo(a)pyrene,benzo(k)fluoranthene and their mixture,were detected at the different concentrations.Their limits of detection(LODs)are 8.3×10^-10(phenanthrene),2.1×10^-10(pyrene),3.8×10^-10(benzo(a)pyrene)and 1.7×10^-10 mol L^-1(benzo(k)fluoranthene),respectively.In addition,these four PAHs were also detected by fluorescence spectroscopy to evaluate the sensitivity of SERS technology using this optimal 3-D SERS substrate.The results showed that the sensitivity of SERS based on the 3-D SERS substrate even using the portable Raman system was closed to that of fluorescence spectroscopy.Therefore,the SERS technology using this optimal 3-D substrate is expected to be an in-situ method for the detection of environmental PAHs. 展开更多
关键词 surface-enhanced Raman scattering(SERS) POLYCYCLIC aromatic hydrocarbons(pahs) THREE-DIMENSIONAL SERS SUBSTRATE fluorescence spectroscopy
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长江中下游典型湖泊鱼体中多环芳烃(PAHs)的污染特征及风险评价
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作者 秦海娇 史秋月 +6 位作者 王永强 毕斌 张森霖 刘宪斌 李琳琳 杨莉园 卢少勇 《环境化学》 CAS CSCD 北大核心 2024年第12期4082-4092,共11页
为揭示长江中下游4个典型湖泊(鄱阳湖、洞庭湖、东江湖和梁子湖)鱼体中多环芳烃(PAHs)的污染特征和风险水平,检测了20种鱼样中的16种PAHs,分析了PAHs污染水平,并开展了风险评价.结果表明16种PAHs共检出11种,∑PAHs的含量分别为鄱阳湖(32... 为揭示长江中下游4个典型湖泊(鄱阳湖、洞庭湖、东江湖和梁子湖)鱼体中多环芳烃(PAHs)的污染特征和风险水平,检测了20种鱼样中的16种PAHs,分析了PAHs污染水平,并开展了风险评价.结果表明16种PAHs共检出11种,∑PAHs的含量分别为鄱阳湖(32.59—39.81 ng·g^(−1))、洞庭湖(29.47—37.60 ng·g^(−1))、东江湖(26.07—36.25 ng·g^(−1))和梁子湖(27.78—47.95 ng·g^(−1)).主要检出物质有5种分别是苯并[b]荧蒽、苯并[k]荧蒽、芘、䓛和芴,其中苯并[b]荧蒽的检出率和检出浓度最高.苊烯、苊、茚并[1,2,3-cd]芘、二苯并[a,h]蒽和苯并[g,h,i]芘在所有鱼体内均未检出.4个湖泊鱼体内PAHs污染水平与国内外相比较低.健康风险评价结果显示,4个湖泊的非致癌风险指数(HI)均小于1,不会对人体产生非致癌风险;但致癌风险值(R)均超过了10^(−6),表明可能会对人体产生致癌风险,应引起重视. 展开更多
关键词 长江中下游典型湖泊 鱼体 多环芳烃 (pahs) 污染特征 风险评价.
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Identification, Quantification and <i>In-Vitro</i>Genotoxicity of Major Polyaromatic Hydrocarbons Produced by Sugarcane Fly Ash Emitted from Sugarmill
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作者 Akanksha Verma Ramovatar Meena +2 位作者 Anurag Maurya Usha Singh Gaharwar Paulraj Rajamani 《Journal of Environmental Protection》 2019年第10期1244-1261,共18页
Sugarcane burning during harvest and non-harvest season emits various pollutants like volatile organic compounds (VOCs), alkanes, and PAHs (Polyaromatic hydrocarbons) in the surrounding environment. Among these pollut... Sugarcane burning during harvest and non-harvest season emits various pollutants like volatile organic compounds (VOCs), alkanes, and PAHs (Polyaromatic hydrocarbons) in the surrounding environment. Among these pollutants, PAHs are of uttermost concern due to their high level of toxicity. Burning of sugarcane bagase in sugar mill results in the production of fly ash. Fly ash is produced as a result of sugarcane bagasse burning in sugar mills. In present study, fly ash that comes out from the sugar mill chimney was collected from Western Uttar Pradesh, India and used for further analysis. High temperature and incomplete combustion inside chimney lead to the formation of PAHs. Extraction of PAHs present in fly ash samples was done by ultrasonication method and was identified with GC-FID (gas chromatography-flame ionization detector). Results exhibit the presence of eight PAHs in fly ash samples where the Benzo(a)pyrene and Naphthalene were found to be in high concentration. Furthermore, we have evaluated toxic effects of fly ash and Polyaromatic hydrocarbons (Standard of BaP & Nap) through different methods i.e. MTT, ROS and comet assay. Significant reduction (p < 0.001) in cell viability was noted in cells treated with fly ash as compared to control. Fly ash samples were also found to induce significant oxidative stress in HeLa cells, which ultimately causes DNA damage. Therefore, it may be concluded that the fly ash samples are toxic to the environment due to the presence of PAHs. Hence, the present study plays an important role in determining the harmful effects of PAHs and their source of occurrence. 展开更多
关键词 SUGARCANE FLY ASH polyaromatic hydrocarbons Reactive Oxygen Species (ROS) DNA Damage Environmental Toxicity
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Polyaromatic Hydrocarbon Degradation of Moss Endophytic Fungi Isolated from Macromitrium sp. in Sri Lanka
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作者 Sagarika Kannangara Punnaja Ambadeniya +1 位作者 Lanka Undugoda Krishanthi Abeywickrama 《Journal of Agricultural Science and Technology(A)》 2016年第3期171-182,共12页
Polyaromatic hydrocarbons (PAHs), which are the major by-products of fossil fuel burning, are released to the environment with the immense growth of urbanization and industrialization. These pollutants are subsequen... Polyaromatic hydrocarbons (PAHs), which are the major by-products of fossil fuel burning, are released to the environment with the immense growth of urbanization and industrialization. These pollutants are subsequently deposited on many substrates including plant surfaces. Due to their toxicity, mutagenicity, carcinogenicity and recalcitrant nature, they can result in many hazardous effects on human health. Application of endophytes in bioremediation has shown much promise in removing these PAHs from contaminated substrates. In the present study, an attempt was made to isolate and identify endophytic fungi from the moss plant Macromitrium sp. (frequently available) in Sapugaskanda (highly polluted) and HettimuUa (less polluted) areas in Sri Lanka. Subsequently, their potential in degrading PAHs (naphthalene and phenanthrene) was investigated. Endophytes from the moss were isolated following the surface sterilization method, and their physiological roles in degrading naphthalene and phenanthrene were carried out using plate assays, spectrophotometric and high-performance liquid chromatography (HPLC) analysis. Most of the endophytie fungi isolated from Macromitrium sp. were able to grow in Bacto Bushnell-Haas (BBH) medium incorporated with naphthalene and phenanthrene, separately, displaying colony diameters more than 30 mm. As per the results obtained from spectrophotometric and HPLC analysis, Penicillium oxalicum, Nigrospora oryzae, Aspergillus oryzae, A. aculeatus, Penicillium sp.1, Penicillium sp.5, Eupenicillium sp.2 and Mortierella sp.1 degraded both naphthalene and phenanthrene more than 85%. The fmdings of the present investigation provide some insight into how these endophytic fungi could be used for bioremediation of PAHs in environmental sites where contamination prevails, and also open avenues for future research in the relevant field. 展开更多
关键词 polyaromatic hydrocarbons BIOREMEDIATION Macromitrium sp. endophytic fungi.
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Coking and decoking chemistry for resource utilization of polycyclic aromatic hydrocarbons(PAHs)and low-carbon process
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作者 Nan Wang Li Wang +12 位作者 Yuchun Zhi Jingfeng Han Chengwei Zhang Xinqiang Wu Jinling Zhang Linying Wang Benhan Fan Shutao Xu Yijun Zheng Shanfan Lin Renan Wu Yingxu Wei Zhongmin Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第1期105-116,I0004,共13页
Low-carbon process for resource utilization of polycyclic aromatic hydrocarbons(PAHs)in zeolitecatalyzed processes,geared to carbon neutrality-a prominent trend throughout human activities,has been bottlenecked by the... Low-carbon process for resource utilization of polycyclic aromatic hydrocarbons(PAHs)in zeolitecatalyzed processes,geared to carbon neutrality-a prominent trend throughout human activities,has been bottlenecked by the lack of a complete mechanistic understanding of coking and decoking chemistry,involving the speciation and molecular evolution of PAHs,the plethora of which causes catalyst deactivation and forces regeneration,rendering significant CO_(2) emission.Herein,by exploiting the high-resolution matrix-assisted laser desorption/ionization Fourier-transform ion cyclotron resonance mass spectrometry(MALDI FT-ICR MS),we unveil the missing fingerprints of the mechanistic pathways for both formation and decomposition of cross-linked cage-passing PAHs for SAPO-34-catalyzed,industrially relevant methanol-to-olefins(MTO)as a model reaction.Notable is the molecule-resolved symmetrical signature:their speciation originates exclusively from the direct coupling of in-cage hydrocarbon pool(HCP)species,whereas water-promoted decomposition of cage-passing PAHs initiates with selective cracking of inter-cage local structures at 8-rings followed by deep aromatic steam reforming.Molecular deciphering the reversibly dynamic evolution trajectory(fate)of full-spectrum aromatic hydrocarbons and fulfilling the real-time quantitative carbon resource footprints advance the fundamental knowledge of deactivation and regeneration phenomena(decay and recovery motifs of autocatalysis)and disclose the underlying mechanisms of especially the chemistry of coking and decoking in zeolite catalysis.The positive yet divergent roles of water in these two processes are disentangled.These unprecedented insights ultimately lead us to a steam regeneration strategy with valuable CO and H_(2) as main products,negligible CO_(2) emission in steam reforming and full catalyst activity recovery,which further proves feasible in other important chemical processes,promising to be a sustainable and potent approach that contributes to carbon-neutral chemical industry. 展开更多
关键词 Methanol-to-olefins SAPO-34 Polycyclic aromatic hydrocarbons(pahs) Catalyst deactivation Catalyst regeneration Low CO_(2)emission
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The Pollution Characteristic of Polycyclic Aromatic Hydrocarbons (PAHs) in Typical Sewage Irrigation Area in North of China
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作者 Jiale Li Caixiang Zhang +3 位作者 Yihui Dong Xiaoping Liao Bin Du Linlin Yao 《Engineering(科研)》 2013年第10期561-565,共5页
This research aims to investigate the pollution characteristic of PAHs in Xiaodian sewage irrigation area. The result shows that the concentrations ofPAHs range from 47.94 to 46432.85ng/g while that of the total compo... This research aims to investigate the pollution characteristic of PAHs in Xiaodian sewage irrigation area. The result shows that the concentrations ofPAHs range from 47.94 to 46432.85ng/g while that of the total components of the 16 kinds of PAHs are 5969.81ng/g. PAHs with for rings and more than 4 rings are the main and important pollutants in topsoils of Xiaodian District. The main input of PAHs is combustion source, and the main pollution source in this area is fired coal. The topsoils in Xiaodian District are polluted by human activity in varying degrees. 23 of all 31 topsoil samples have been heavily polluted, especially those located nearby developed industrial townships and irrigation channels. 展开更多
关键词 POLLUTION CHARACTERISTIC POLYCYCLIC Aromatic hydrocarbons (pahs) TYPICAL SEWAGE Irrigation Area
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高效液相色谱-内标法测定香辛料中15种多环芳烃类污染物(PAHs) 被引量:2
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作者 侯美玲 冯桂蓉 +2 位作者 蔡小钦 黄丹丹 董宪兵 《现代食品科技》 CAS 北大核心 2024年第4期331-340,共10页
该研究建立了高效液相色谱(High Performance Liquid Chromatography,HPLC)同时分析香辛料中15种多环芳烃类污染物(Polycyclic Aromatic Hydrocarbons,PAHs)含量的内标检测方法。样品经氢氧化钠溶解,乙腈萃取,正己烷复溶后,过弗罗里硅土... 该研究建立了高效液相色谱(High Performance Liquid Chromatography,HPLC)同时分析香辛料中15种多环芳烃类污染物(Polycyclic Aromatic Hydrocarbons,PAHs)含量的内标检测方法。样品经氢氧化钠溶解,乙腈萃取,正己烷复溶后,过弗罗里硅土(Florisil)小柱净化浓缩,供HPLC检测,苯并[a]芘-D12作为内标定量。该方法在0~100 ng/mL内线性关系良好,辣椒中PAHs检出限:0.5~3.0μg/kg;定量限2.0~10.0μg/kg;花椒中检出限:0.5~1.0μg/kg;定量限2.0~3.0μg/kg。在2.0、10.0、50.0μg/kg 3个浓度水平,辣椒中回收率范围为60.58%~119.48%,相对标准偏差(Relative Standard Deviations,RSD)(n=6)为1.25%~9.61%,花椒中回收率为60.46%~119.24%,RSD(n=6)为1.10%~8.56%。5种地产香辛料中∑PAHs含量由高到低为:青花椒(561.2μg/kg)>二荆条(448.8μg/kg)>红花椒(358.3μg/kg)>石柱红(353.6μg/kg)>小米辣(243.5μg/kg),区县种植基地污染较严重的为璧山、江津和荣昌,∑PAHs分别为721.5、626.6和621.0μg/kg,PAHs中污染较严重的化合物为菲、荧蒽和芘,平均含量分别为215.10、80.25和75.35μg/kg。该研究建立的内标法准确度高,重复性好,适用于香辛料及制品中PAHs检测。 展开更多
关键词 多环芳烃 污染物 内标法 高效液相色谱 香辛料
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The Study of Pollution of PAHs (Polycyclic Aromatic Hydrocarbons) in AI-Hilla River, Iraq by Using Bioindicator Freshwater Crab (Sesarma boulengeri Caiman)
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作者 Jasim M. Salman Atheer S. N. AI-Azawey Fikrat M. Hassan 《Journal of Life Sciences》 2014年第4期351-357,共7页
The present study was used freshwater Crab (Sesarma boulengeri Caiman) as bioindicator to measured the PAHs levels in AI-Hilla River, Iraq, during the period from March 2010 to February 2011. Crab samples were colle... The present study was used freshwater Crab (Sesarma boulengeri Caiman) as bioindicator to measured the PAHs levels in AI-Hilla River, Iraq, during the period from March 2010 to February 2011. Crab samples were collected from two sites on the AI-Hilla River. Sixteen of PAils compounds were identified seasonally in these samples. High mean value was (72.06 μg/g), recorded by Dibenzo (a, h) anthracene (DbA) in Site 1 and low mean value was (0.36 μg/g) recorded by Anthracene (Ant) in Site 2. The study showed a clear variation in PAHs concentration independent from the seasons and locations. Site 1 recorded high value of HMW (high molecular weight) and LMW (low molecular weight) more than Site 2. The present study revealed that all PAHs compounds were from Pyrogenic Origin. Seven carcinogenic PAHs (cPAHs) were recorded in crab tissues that were collected from the AI-Hilla River. The TEF (toxicity equivalency factor) was calculated to toxicity equivalent crab concentration. From the results, the fresh water Crab Sesarma boulengeri is a good bioindicator to water pollution by PAHs. 展开更多
关键词 Polycyclic aromatic hydrocarbons fresh water crab carcinogenic pahs environmental health BIOINDICATOR Euphrates River AI-Hilla River.
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CARBONIZED FIBROUS RESIN AS A NEW SORBENT FOR SAMPLING POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) IN AMBIENT AIR
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作者 LING Daren LIU Bing WU Guoqi 《Chinese Journal of Reactive Polymers》 2002年第1期32-40,共9页
A new sampling method of ambient air analysis using carbonized fibrous resin as a sorbent for polycyclic aromatic hydrocarbons (PAHs) was reported. The physical and chemical properties of the carbonized fibrous resin... A new sampling method of ambient air analysis using carbonized fibrous resin as a sorbent for polycyclic aromatic hydrocarbons (PAHs) was reported. The physical and chemical properties of the carbonized fibrous resins were measured. The sample pretreatment with ultrasonic extraction and subsequent clean-up elution through a silica gel column was optimized. The suitable ultrasonic extraction conditions were selected as follows: resin weight was 1.5 g, ultrasonic extraction time 20 min, volume of extraction solvent 100 ml and extraction operation times 2~3. The concentrated extractable organic matter was submitted to next step of clean-up procedure of adsorption chromatography on silica gel column/n-hexane and a mixture of dichloromethene:n-hexane solution 2:3 (v/v). The PAHs fractions in the real samples from Changzhou, China were particularly analyzed using GC-MS data system and the data of mass spectra, retention times and scan numbers of the real samples were compared with that of the standards of 16 PAHs listed by the US EPA as 損riority pollutants?of the environment. The analysis of the real samples indicates that the carbonized fibrous resin is a good sorbent. The pretreatment of samples of ambient air with carbonized fibrous resin as a sorbent for PAHs is proved to be reliable and might be used for the procedure of the determination of PAHs in atmospheric environment. 展开更多
关键词 Carbonized fibrous resin Polycyclic aromatic hydrocarbons (pahs) GC-MS Atmospheric environment monitoring
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厦门西海域表层水中PAHs污染与PAHs降解菌分布的关系 被引量:15
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作者 田蕴 郑天凌 +2 位作者 王新红 肖清江 张勇 《热带海洋学报》 CAS CSCD 北大核心 2003年第6期15-21,共7页
在厦门西海域设置6个站位,于2001年7月和10月两个航次对各站位表层水中多环芳烃(polycyclicaromatichydrocarbons,PAHs)的含量及几种常见PAHs的降解菌的数量进行调查,结果表明:表层水中PAHs的含量很不稳定,存在明显的时间变化。在7月的... 在厦门西海域设置6个站位,于2001年7月和10月两个航次对各站位表层水中多环芳烃(polycyclicaromatichydrocarbons,PAHs)的含量及几种常见PAHs的降解菌的数量进行调查,结果表明:表层水中PAHs的含量很不稳定,存在明显的时间变化。在7月的调查中,表层水中能检测到的PAHs以2—3环的为主,而在10月以4—6环的为主。低分子量的PAHs—芴和菲的含量与其降解菌的数量之间具有明显的正相关,而高分子量的PAHs—荧蒽和芘的含量与其降解菌的数量之间没有表现出相关性。 展开更多
关键词 多环芳烃(polycyclic AROMATIC hydrocarbons pahs) 表层水 pahs降解菌
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多环芳烃(PAHs)在大气中的相分布 被引量:77
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作者 毕新慧 盛国英 +2 位作者 谭吉华 唐小玲 傅家谟 《环境科学学报》 CAS CSCD 北大核心 2004年第1期101-106,共6页
通过对广州市老城区空气中多环芳烃的研究表明 ,该区多环芳烃的污染相当严重 ,不同季节测定的多环芳烃总量差别不大 ,但颗粒相多环芳烃在春季占的比例 (44 8% )要高于夏季 (9 4 % ) .气相中主要以芴、菲、甲基菲、荧蒽、芘等低环数的... 通过对广州市老城区空气中多环芳烃的研究表明 ,该区多环芳烃的污染相当严重 ,不同季节测定的多环芳烃总量差别不大 ,但颗粒相多环芳烃在春季占的比例 (44 8% )要高于夏季 (9 4 % ) .气相中主要以芴、菲、甲基菲、荧蒽、芘等低环数的多环芳烃为主 ,而高于四环的多环芳烃主要是分布在颗粒相中 ,苯并 (ghi)是最主要的颗粒相多环芳烃物质 . 展开更多
关键词 多环芳烃 大气污染 相分布 气溶胶
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污灌土壤中多环芳烃(PAHs)的积累与动态变化研究 被引量:77
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作者 宋玉芳 常士俊 +2 位作者 李利 马学军 孙铁珩 《应用生态学报》 CAS CSCD 1997年第1期93-98,共6页
对污灌土壤中 1 4种多环芳烃的分析表明 ,各灌区土壤中 PAHs的积累一般以渠首最高 ,渠中次之 ,渠尾含量与对照相当 .但在沈抚石油灌区上、中和下游土壤中均有PAHs的积累 .此外 ,水稻生长期污灌可明显增加土壤中 PAHs的总量 ,各单一污染... 对污灌土壤中 1 4种多环芳烃的分析表明 ,各灌区土壤中 PAHs的积累一般以渠首最高 ,渠中次之 ,渠尾含量与对照相当 .但在沈抚石油灌区上、中和下游土壤中均有PAHs的积累 .此外 ,水稻生长期污灌可明显增加土壤中 PAHs的总量 ,各单一污染物的增、减趋势有所不同 . 展开更多
关键词 多环芳烃 土壤 积累 污水灌溉 污染生态学
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植物法生物修复PAHs和矿物油污染土壤的调控研究 被引量:99
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作者 孙铁珩 宋玉芳 +2 位作者 许华夏 张海荣 杨桂芬 《应用生态学报》 CAS CSCD 1999年第2期225-229,共5页
选择苜蓿草为供试植物,以污染物含量水平、专性细菌和真菌及有机肥为调控因子,进行了植物法生物修复多环芳烃(PAHs)和矿物油污染土壤的调控研究.结果表明,PAHs和矿物油的降解率与有机肥含量呈正相关,增加有机肥5%,可... 选择苜蓿草为供试植物,以污染物含量水平、专性细菌和真菌及有机肥为调控因子,进行了植物法生物修复多环芳烃(PAHs)和矿物油污染土壤的调控研究.结果表明,PAHs和矿物油的降解率与有机肥含量呈正相关,增加有机肥5%,可提高矿物油降解率17.6%~25.6%,PAHs降解率9%.在植物存在条件下,土壤微生物降解功能增强.多环芳烃总量的平均降解率比无植物对照土壤提高2.0%~4.7%.投加特性降解真菌可不同程度地提高土壤PAHs总量和矿物油的降解率.真菌对萤蒽、芘和苯(a)蒽/艹屈的降解有明显促进作用.而细菌能明显提高苊稀/芴、蒽和苯(a)萤蒽/苯(k)萤蒽的降解率. 展开更多
关键词 土壤污染 多环芳烃 植物生物修复 降解率
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PAHs降解菌的分离、鉴定及降解能力测定 被引量:43
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作者 徐虹 章军 +1 位作者 刘陈立 邵宗泽 《海洋环境科学》 CAS CSCD 北大核心 2004年第3期61-64,共4页
以芴、菲、蒽、芘为碳源和能源筛选、分离PAHs降解菌。14株能降解利用PAHs的菌株被分离。通过HPLC分析,在含芴、菲、蒽、芘的混合培养基质中10号菌的降解能力最强。研究它的降解性能和生长情况,表明该菌在混合反应体系中培养30d后对芴... 以芴、菲、蒽、芘为碳源和能源筛选、分离PAHs降解菌。14株能降解利用PAHs的菌株被分离。通过HPLC分析,在含芴、菲、蒽、芘的混合培养基质中10号菌的降解能力最强。研究它的降解性能和生长情况,表明该菌在混合反应体系中培养30d后对芴、菲、蒽、芘的降解率分别为95.27、90.46、28和80%;在只含一种PAH的单反应体系中该菌对芴、菲、蒽的降解能力提高,降解率分别可达98.91、94.32和52.17%,而对芘的降解能力则降低,降解率仅为62.47%。与混合PAHs培养体系相比,在单一PAH培养体系中,细菌的对数生长期缩短1/3。经生理生化鉴定和16SrDNA序列对比分析,确定10号菌株属于假单胞菌,命名为PseudomonasspFAP10。 展开更多
关键词 生物降解 多环芳烃 假单胞菌
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植物根对土壤中PAHs的吸收及预测 被引量:41
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作者 凌婉婷 朱利中 +1 位作者 高彦征 熊巍 《生态学报》 CAS CSCD 北大核心 2005年第9期2320-2325,共6页
研究了多种植物根对土壤中多环芳烃(PAHs)的吸收作用,阐述了根系吸收与土壤污染强度、污染物性质、植物组成等的关系,并用实验数据检验了限制分配模型对植物吸收土壤中PAHs的预测性能.供试土壤中菲和芘的起始浓度分别为0~457和0~489 m... 研究了多种植物根对土壤中多环芳烃(PAHs)的吸收作用,阐述了根系吸收与土壤污染强度、污染物性质、植物组成等的关系,并用实验数据检验了限制分配模型对植物吸收土壤中PAHs的预测性能.供试土壤中菲和芘的起始浓度分别为0~457和0~489 mg/kg;45d后,随土壤中菲和芘浓度提高,根中菲和芘含量明显增大,根系富集系数则减小.不同植物根中菲和芘含量和根系富集系数与根的脂肪含量呈显著正相关.由于芘的Kow较大,同种植物根中芘含量、芘的根系富集系数则远大于菲.经45d处理,尽管土壤中菲浓度变化很大(从不足1mg/kg到约45mg/kg),限制分配模型能较好地预测供试植物根中菲的含量,黑麦草和菜心根中菲含量的预测误差低于81%.作为限制分配模型预测植物吸收的关键参数,不同植物根吸收菲的αpt值与根脂肪含量显著正相关. 展开更多
关键词 多环芳烃 土壤 植物吸收 模型
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水泥窑PM_(2.5)排放特性及其PAHs风险分析 被引量:9
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作者 韦琳 唐海龙 +2 位作者 郭盈盈 邹正禹 刘阳生 《中国环境科学》 EI CAS CSCD 北大核心 2014年第5期1113-1118,共6页
采用荷电低压颗粒物撞击器(ELPI)、便携式PM2.5采样器和稀释系统,对国内3家新型干法水泥生产厂(5条生产线)的水泥窑(包括窑头和窑尾)进行现场采样,分析水泥窑排放PM2.5的质量浓度、粒数浓度及其中的多环芳烃(PAHs)浓度,对呼吸致癌风险... 采用荷电低压颗粒物撞击器(ELPI)、便携式PM2.5采样器和稀释系统,对国内3家新型干法水泥生产厂(5条生产线)的水泥窑(包括窑头和窑尾)进行现场采样,分析水泥窑排放PM2.5的质量浓度、粒数浓度及其中的多环芳烃(PAHs)浓度,对呼吸致癌风险进行评价.结果表明:从粒数浓度分析,PM2.5中70%以上为PM0.33,这部分颗粒物主要是由气化凝结形成的.各采样点排放的PAHs主要以二环和三环的低环PAHs为主.第3个水泥厂窑头排放的PAHs含量最高,而且苯并[a]芘(BaP)超过国家所规定的8ng/m3标准限值,同时其呼吸致癌风险水平为4.46×10-4,高于可接受致癌风险水平的上限,需要有效处理. 展开更多
关键词 细颗粒物 水泥窑 多环芳烃 致癌风险 fine PARTICULATE matter (PM2.5) POLYCYCLIC AROMATIC hydrocarbons (pahs)
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