基于累积概率分布法评估典型水环境因子对铜毒性的影响  

EVALUATION OF INFLUENCE OF TYPICAL WATER CONDITIONS ON COOPER TOXICITY BASED ON THE CUMULATIVE PROBABILITY DISTRIBUTION METHOD

作　　者：廖伟 冯承莲 刘大庆[2] 刘娜 何佳[2] 杨明儒[2] LIAO Wei;FENG Cheng-lian;LIU Da-qing;LIU Na;HE Jia;YANG Ming-ru(Key Laboratory of Poyang Lake Environment and Resource Utilization,Ministry of Education,School of Environmental and Chemical Engineering,Nanchang University,Nanchang 330031,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Jiangxi Irrigation Experiment Central Station,Nanchang 330201,China)

机构地区：[1]南昌大学资源环境与化工学院鄱阳湖环境与资源利用教育部重点实验室,南昌330031 [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,北京100012 [3]江西省灌溉试验中心站,南昌330201

出　　处：《环境工程》2019年第11期25-29,共5页Environmental Engineering

基　　金：水体污染控制与治理科技重大专项(2017ZX07301005-001);国家自然科学基金面上项目(41773085)

摘　　要：评估典型水环境因子对金属毒性的影响对水质基准预测及修正具有重要意义。通过文献和数据库调研,收集了我国主要流域地表水硬度、DOC含量、pH等指标的测量数据。同时以斑马鱼为研究对象,开展了水体不同硬度、DOC含量、pH值等条件下Cu^2+对斑马鱼毒性变化研究。结果表明:我国主要流域地表水硬度、DOC含量和pH值等指标的变化范围分别为27.6~1007.3 mg/L,0.64~45.17 mg/L和6.83~9.49;硬度和DOC含量与Cu^2+对斑马鱼毒性呈显著线性关系,可用一级线性方程拟合;选取水体硬度、DOC含量和pH等因子5%和50%累积概率的值,比较各因子相同累积概率区间范围内Cu^2+对斑马鱼的毒性变化程度,得出DOC含量为我国主要流域地表水水环境因子中铜对斑马鱼毒性的最大影响因素。研究结果可为金属的水质基准的制修订提供参考。It is very important to evaluate the effects of typical water environment factors on metal toxicity for predicting and revising water quality criteria.The measurement data of surface water hardness,DOC content,and pH in China were collected in the literature and database investigation.Meanwhile,zebrafish was taken as the research object,to study the toxicity of Cu 2+under different water quality condition factors including hardness,DOC content and initial pH value.The results showed that the water hardness was ranged from 27.6 to 1007.3 mg/L,DOC content was ranged from 0.64 to 45.17 mg/L,and pH value was ranged from 6.83 to 9.49 in surface water in China.And the water hardness and DOC content had a significant linear relationship with copper toxicity to zebrafish,which could be fitted by first-order linear equation.The values of 5%and 50%cumulative probability of water hardness,DOC content and pH value were selected to compared the degree of toxicity changing of Cu^2+to zebrafish within the same cumulative probability range of these factors,then it was concluded that the DOC content was the most important factor affecting the toxicity of copper to zebrafish in the surface water parameters in China.The results can provide references for the revision of water quality standards for metals in China.

关 键 词：累积概率 斑马鱼 硬度 DOC PH值 水质基准 

分 类 号：R28[医药卫生—中药学]