Derivation of water quality criteria for representative water-body pollutants in China  

作　　者：WU FengChang FENG ChengLian ZHANG RuiQing LI YuShuang DU DongYang 

机构地区：[1]State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China [2]Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China

出　　处：《Science China Earth Sciences》2012年第6期900-906,共7页中国科学（地球科学英文版）

基　　金：supported by National Basic Research Program of China(Grant No. 2008CB418200);Environmental Public Welfare Program(Grant No. 2010009032);National Natural Science Foundation of China (Grant Nos. U0833603, 40973090)

摘　　要：In this study, toxicological data for zinc （Zn）, cadmium （Cd）, hexavalent chromium （Cr （VI））, benzene, and nitrobenzene were collected from various databases and publications, screened and then constructed into species sensitivity distribution （SSD） curves. Then water quality criteria （WQC） were derived for protection of the freshwater aquatic life in China against five representative pollutants. The values derived in this study were compared with those issued by the US Environmental Protection Agency and the Chinese national environmental standard for surface water to identify factors underlying the differences. The results showed that the SSD curves for the five pollutants differed significantly, with the examined aquatic species being gen- erally more sensitive to Zn, Cd, and Cr （VI） than benzene and nitrobenzene. The acute WQC were： 48.43 μg L-1 for Zn, 0.4218 μg L-1 for Cd, 45.79μg L-1 for Cr （VI）, 2651 μg L-1 for benzene, and 1426 μg L-1 for nitrobenzene. The chronic WQC were： 20.01μg L-1 for Zn, 0.2428 μg L-j for Cd, 14.22 μg L-1 for Cr （VI）, 530.2 μg L J for benzene, and 286.2 μg L-1 for nitroben- zene. The results of this comparative study of representative pollutants may offer guideline values for future WQC studies for China.In this study, toxicological data for zinc (Zn), cadmium (Cd), hexavalent chromium (Cr (VI)), benzene, and nitrobenzene were collected from various databases and publications, screened and then constructed into species sensitivity distribution (SSD) curves. Then water quality criteria (WQC) were derived for protection of the freshwater aquatic life in China against five representative pollutants. The values derived in this study were compared with those issued by the US Environmental Protection Agency and the Chinese national environmental standard for surface water to identify factors underlying the differences. The results showed that the SSD curves for the five pollutants differed significantly, with the examined aquatic species being generally more sensitive to Zn, Cd, and Cr (VI) than benzene and nitrobenzene. The acute WQC were: 48.43 μg L 1 for Zn, 0.4218 μg L 1 for Cd, 45.79 μg L 1 for Cr (VI), 2651 μg L 1 for benzene, and 1426 μg L 1 for nitrobenzene. The chronic WQC were: 20.01 μg L 1 for Zn, 0.2428 μg L 1 for Cd, 14.22 μg L 1 for Cr (VI), 530.2 μg L 1 for benzene, and 286.2 μg L 1 for nitrobenzene. The results of this comparative study of representative pollutants may offer guideline values for future WQC studies for China.

关 键 词：aquatic life water quality criteria representative pollutants BIOTA species sensitivity distribution 

分 类 号：X703[环境科学与工程—环境工程] TU991.21[建筑科学—市政工程]