摘要
采用半静态试验方式测试了四氯丙烯对稀有鮈鲫(Gobiocypris rarus)的急性毒性,试验浓度分别设定为0.25 mg·L^(-1)、0.30mg·L^(-1)、0.36 mg·L^(-1)、0.42 mg·L^(-1)、0.50 mg·L^(-1)和0.60 mg·L^(-1),同时进行空白对照(试验用水)和分散剂对照(体积分数为0.006%的吐温-80水溶液)试验。采用气相色谱法对试验溶液进行浓度分析,实测浓度分别为0.19 mg·L^(-1)、0.25 mg·L^(-1)、0.34 mg·L^(-1)、0.40 mg·L^(-1)、0.51 mg·L^(-1)和0.64 mg·L^(-1),试验结果以实测浓度表示和统计。结果表明:四氯丙烯致稀有鮈鲫无死亡发生(EC0)的最高浓度为0.25 mg·L^(-1),导致稀有鮈鲫100%死亡(EC100)的最低浓度为0.51 mg·L^(-1)。根据实测浓度,用SPSS(17.0)概率单位法求得四氯丙烯对稀有鮈鲫的半数致死浓度96 h-LC50为0.347 mg·L^(-1),95%置信区间为0.328 mg·L^(-1)~0.361 mg·L^(-1)。
The 96 h acute toxicity of tetrachloropropene to freshwater organism rare gudgeon(Gobiocypris rarus) in semi-static exposure regime was measured in this study. The concentration was set as 0.25, 0.30, 0.36, 0.42, 0.50 and 0.60 mg·L^(-1), as well as a blank control(test water) and a dispersant control(0.006% V/V tween 80). Gas chromatography was used to analyze the test concentrations. The measured concentrations were 0.19, 0.25, 0.34, 0.40,0.51 and 0.64 mg·L^(-1), which were used to express and calculate the test results. The result showed that the EC0 was 0.25 mg·L^(-1), and the EC100 was 0.51 mg·L^(-1). According to the measured concentrations, 96 h-LC50 of tetrachloropropene to rare gudgeon was 0.347 mg·L^(-1), with the 95% confidence interval of 0.328 mg·L^(-1)to 0.361 mg·L^(-1).
出处
《生态毒理学报》
CAS
CSCD
北大核心
2015年第6期313-319,共7页
Asian Journal of Ecotoxicology
基金
上海化学品公共安全工程技术中心专项(11DZ2282900)
关键词
四氯丙烯
稀有鮈鲫
急性毒性
安全浓度
tetrachloropropene
rare gudgeon
acute toxicity
safe concentration