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Genotoxicity evaluation and a primary risk assessment of organic pollutants in the drinking water sources of Nanjing, China 被引量:6
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作者 LI Yi-qiang WU Yu-lin +1 位作者 CHEN Yuan-gao KONG Zhi-ming 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2006年第5期983-988,共6页
An increasing number of industrial, agricultural, and commercial chemicals in the aquatic environment leads to various deleterious effects on organisms, which is becoming an increasingly serious problem in China. In t... An increasing number of industrial, agricultural, and commercial chemicals in the aquatic environment leads to various deleterious effects on organisms, which is becoming an increasingly serious problem in China. In this study, the comet assay was conducted to investigate the genotoxicity to human body caused by organic concentrates in the drinking water sources of Nanjing City from Yangtze River of China, and health and ecology risk due to expose to these organic pollutants were evaluated with the multimedia environmental assessment system (MEAS). For all the water samples, they were collected from four different locations in the drinking water sourcr samples, es of Nanjing City. The results of the comet assay showed that all the organic concentrates from the water samples could induce different levels DNA damages on human peripheral blood lymphocytes, and a statistically significant difference (p〈0.01) was observed compared with the solvent control, which demonstrated the genotoxicity was in existence. According to the ambient severity (AS) of individual compound, we had sorted out the main organic pollutants in the drinking water source of the four waterworks, and the results showed that there was some potential hazard to human body for all the source water, namely the total ambient severity (TAS) of health for each water source was more than 1. However, the TAS of ecology for each water source was less than 1, which indicated that it was safe to ecology. The results of this investigation demonstrate the application of the comet assay and the MEAS in aquatic environmental monitoring studies, and the comet assay found to be fast, sensitive, and suitable for genotoxicity monitoring programs of drinking water source. 展开更多
关键词 GENOTOXICITY comet assay risk assessment organic pollutants drinking water sources Nanjing City
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Air-sea fluxes of heat and momentum over the Yellow Sea during cold air outbreaks
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作者 WANG Jian-hong SHI Jia-lin +3 位作者 LIANG Xiang-san PENG Mo LI Zhi-jin MIAO Chun-sheng 《Marine Science Bulletin》 CAS 2019年第2期16-35,共20页
The impact of sea surface waves on air-sea fluxes of heat and momentum over the Yellow Sea caused by cold fronts during cold air outbreak(CAO)events is investigated through numerical experiments with a FVCOM-SWAVE(Fin... The impact of sea surface waves on air-sea fluxes of heat and momentum over the Yellow Sea caused by cold fronts during cold air outbreak(CAO)events is investigated through numerical experiments with a FVCOM-SWAVE(Finite-Volume Coastal Ocean Model-Surface WAVE)wave-current coupled model.Two typical types of cold fronts,i.e.,those respectively from the north and from the west,are simulated and compared to each other and with monthly mean.During cold seasons,currents in the Yellow Sea are weaker than that during warm seasons.As a result,waves show a more prominent impact.The numerical simulations suggested that both the heat and momentum fluxes are significantly enhanced during CAO events;and they could be a few times larger than the monthly average of a five-year mean.The enhancement is highly sensitive to the features of CAOs.Specifically,it depends on the cold front orientation,intensity and evolution.One mechanism that strengthens the two fluxes is via sea waves.For the CAOs that are studied,an increase in sea wave height by 50%can double the maximal momentum flux,and cause an increase in heat flux by 10-160 W/m^2. 展开更多
关键词 Yellow Sea air-sea fluxes of heat and momentum cold air outbreak sea surface wave FVCOM-SWAVE coupled model
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Extension Multi-factorial Evaluation Method on Water Quality Early-warning
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作者 Rong GUO Yong ZHANG +1 位作者 Fangjian XIE Sheng ZHONG 《Asian Agricultural Research》 2013年第6期95-97,共3页
Extension multi-factorial evaluation method was used in water quality early-earning in Yincungang River based on MATLAB. The results showed that water quality in summer was safe,while that in other three seasons were ... Extension multi-factorial evaluation method was used in water quality early-earning in Yincungang River based on MATLAB. The results showed that water quality in summer was safe,while that in other three seasons were in pre-warning state with the order of winter > spring > autumn. 展开更多
关键词 EXTENSION multi-factorial EVALUATION WATER QUALITY
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