摘要
研究了化纤废水中主要污染物乙醛、对苯二甲酸和乙二醇对大型蚤的急性毒性及联合毒性作用。结果表明 ,乙醛对大型蚤 4 8h -LC50 、96h -LC50 值分别为 16 .8、4 .2mg/L ,安全质量浓度为 0 .4 2mg/L ;对苯二甲酸对大型蚤 4 8h -LC50 、96h -LC50 值分别为 316 5.2、1111.7mg/L ,安全质量浓度为 111.2mg/L ;乙二醇对大型蚤 4 8h -LC50 、96h -LC50 值分别为 386 7.2、2 4 4 2 .6mg/L ,安全质量浓度为 2 4 4 .3mg/L。联合毒性试验的混合毒物的配比为 :乙醛∶对苯二甲酸∶乙二醇 =1∶2 6 5∶582 (毒性单位为 4 .2∶1111.7∶2 4 4 2 .6 )时 ,混合毒物对大型蚤的 96h -LC50 值为 337.7mg/L ,安全质量浓度为 33.8mg/L ,Q值为 3.5。
Acute toxicity and joint action of the main pollutants acetaldehyde,p-phthalic acid and ethylene glycol in fibre wasterwater to Daphma magna were studied. The results show that the values of 96 h-LC 50 of acetaldehyde, p-phthalic acid and ethylene glycol are 4.2, 1 111.7 and 2 442.6 mg/L respectively, and the 48 h-LC 50 of those are 16.8, 3 165.2 and 3 867.2 mg/L.Their safe concentrations are 0.42, 111.2 and 244.3 mg/L.The joint toxicity is synergistic when the mixture consists of acetal,dehyde,p-phthalic acid and ethylene glycol at the ratio of 1∶265∶582,of which the value of 96 h-LC 50 is 337.7 mg/L, safe concentration 33.8 mg/L, the value of Q 3.5.
出处
《中国水产科学》
CAS
CSCD
2000年第1期78-81,共4页
Journal of Fishery Sciences of China
关键词
大型蚤
乙醛
对苯二甲酸
毒性试验
化纤废水
Daphnia magna
acetaldehyde
p-phthalic acid
ethylene glycol
toxicity test
fibre wasterwater
