我国淡水水生生物镉基准研究

研究了Cd对我国淡水水生生物的毒性效应，包括43种生物的急性毒性数据和14种生物的慢性毒性数据.同时，参照美国环境保护署（USEPA）颁布的水质基准计算方法，按照基准最大浓度（CMC）和基准连续浓度（CCC）计算了我国淡水水生生物的Cd基准.结果表明，我国淡水生物Cd基准的CMC值和CCC值分别为2.1 μg·L-1和0.23 μg·L-1，与美国淡水生物Cd的基准值有一定差别，研究结果为我国的Cd水质标准研究提供了参考依据.

Biological criteria for freshwater Cd in China

Toxicity effects of Cd on resident freshwater species in China were studied. Acceptable data including the acute effects of Cd on 43 species and chronic effects on 14 species are available. According to the guidelines for deriving water quality criteria issued by the United States Environmental Protection Agency ( USEPA) , the freshwater biological criteria for Cd in China, which includes the Criterion Maximum Concentration ( CMC) and the Criterion Continuous Concentration (CCC) was derived. The results showed that the CMC and CCC of freshwater for Cd in China were 2. lμg·L~(-1) and 0. 23μg·L~(-1) , respectively. They differ from the biological criteria for Cd in freshwatei in the United States to some degree. This research provides important information for the study of water quality standards for Cd in China.