用浮萍试验检测4种污染物的植物毒性  

Phytotoxicity evaluation of four pollutants by Lemna minor test

作　　者：张彤[1] 金洪钧[1] 

机构地区：[1]华东理工大学环境工程学院,南京大学环境科学与工程系

出　　处：《中国环境科学》1995年第4期266-271,共6页China Environmental Science

摘　　要：用浮萍试验检测丙烯腈－腈纶工业废水中４种主要污染物：丙烯腈、硫氰酸钠（ＮａＳＣＮ）、乙腈和二甲基甲酰胺（ＤＭＦ）的植物毒性。结果表明，４种污染物对浮萍的９６ｈ－ＩＣ５０分别为２７．０８ｍｇ／Ｌ、３６６２．６ｍｇ／Ｌ、３６８４．６ｍｇ／Ｌ和１２１９７ｍｇ／Ｌ。除ＮａＳＣＮ外，浮萍对其它３种污染物的敏感性与水生动物的敏感性相近。文中还对浮萍试验的反应终点、重复间的偏差及浮萍的实验室培养进行了讨论。采用浮萍生长抑制试验检测植物毒性，不仅克服了藻类生长抑制试验操作繁锁，难以去除废水背景值等缺点，并能更好反映废水毒性的变化。Duckweed growth inhibition test is an important method to evaluate the aquatic phytotoxicity of pollutants.It overcomes the algae growth inhibition test in some respects.This study estimated the phytotoxicity of four major pollutants in the acrylonitrile-acrylic effluent,including acrylonitrile,NaSCN,acetonitrile and dimethyl formamide(DMF).The results indicated that the 96h-IC50 of the four compounds to Lemna minor were 27.08mg/L,3662.6mg/L,3684.6mg/L and 12197mg/L respectively.The paper also discussed the endpoints of the duckweed test,differences between tests and the culture of the duckweed.

关 键 词：浮萍试验 植物毒性 丙烯腈 工业废水 

分 类 号：X503.23[环境科学与工程—环境工程]