浑河沈阳河段重金属镉的水质基准阈值探讨  

Development of aquatic criteria for cadmium for Shenyang reach of Hunhe in China

作　　者：朱岩[1,2] 覃璐玫[3] 张亚辉[2] 曹莹[2] 郑磊[1,4] 王伟莉[2] 闫振广[2] 曾鸿鹄[1] 刘征涛[2] 

机构地区：[1]桂林理工大学环境科学与工程学院,桂林541004 [2]中国环境科学研究院,环境基准与风险评估国家重点实验室,国家环境保护化学品生态效应与风险评估重点实验室,北京100012 [3]广西建设职业技术学院,南宁530000 [4]北京师范大学水科学研究院,北京100875

出　　处：《环境化学》2016年第8期1578-1583,共6页Environmental Chemistry

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07501-003);科技基础性工作专项(2014FY120606);国家自然科学基金(51268008,21407139)资助~~

摘　　要：研究镉对浑河沈阳河段的水质基准,采用当地水源和实验室自来水及当地物种蛇鮈、麦穗鱼和多刺裸腹溞进行毒性试验,利用"水效应比值法(WER)"和辽河流域常规基准值推导该河段镉的基准最大浓度(CMC)和基准连续浓度(CCC).结果表明,在原水中镉对蛇鮈和麦穗鱼的96 h半数死亡浓度(96 h-LC50)和镉对多刺裸腹溞的48 h半数效应浓度(48 h-EC50)分别为1.98 mg·L^(-1)、1.13 mg·^(-1)、0.17 mg·^(-1),在实验室配制水中分别为2.19 mg·^(-1)、1.16 mg·^(-1)、0.60 mg·^(-1);镉对蛇鮈、麦穗鱼和多刺裸腹溞的WER分别为0.9041、0.9741、0.2833,其几何平均值为0.6295.该河段镉的CMC为1.86μg·^(-1),CCC为0.025μg·^(-1).浑河沈阳河段镉的急慢性基准值均小于流域及国家的急慢性基准值.Using the local river water, lab tap water and the local species such as Saurogobio dabryi, Pseudorasbora parva and Moina macrocopa, toxicity test were performed to develop to study aquatic criteria for cadmium for Shenyang reach of Hunhe. And the criteria maximum concentration of cadmium was calculated by ＂water-effect ratio procedure （WER）＂ and the convention criteria of Liao River basin. The criteria continuous concentration （CCC） of cadmium for the reach was derived by the evaluation factor method. The results showed that 96 h-LC50 to Saurogobio dabryi, Pseudorasbora parva and Moina macrocopa 48 h-EC50 to were 1.98 mg. L-1, 1.13 mg. L-1, 0.17 mg.L-1 in the river water, while they were 2.19 mg.L-1, 1.16 mg.L-1, 0.60 mg.L-1 in tap water. The WER of cadmium for the three species were 0.9041, 0.9741, 0.2833, and the geometric mean was 0.6295. CMC and CCC of cadmium for the reach were 1.86 μg.L-1 and 0.025 μg.L-1. The acute criteria and chronic criteria of the reach were lower than the the basins and national acute criteria and chronic criteria.

关 键 词：水质基准 镉 浑河沈阳河段 

分 类 号：X522[环境科学与工程—环境工程]