摘要
利用理化分析、浸出毒性试验相结合研究了次氧化锌废渣在模拟不同酸雨条件下的浸出毒性。运用水溞(Daphnia)半致死浓度(LC50)的测定方法来对模拟不同酸性环境下,贵州省赫章县妈姑镇次氧化锌生产厂的次氧化锌废渣浸出液对代表性靶标生物的急性生物毒性进行研究,结合理化分析对废渣造成的环境污染进行分析。研究结果表明,浸出液中起主导毒性作用的重金属元素是Pb和Zn,浸出液生物毒性由强至弱依次为pH4.02>pH4.55>pH5.02>pH5.53>pH5.98>pH6.98。
The physical and chemical analysis, and a combination of the method for measuring of Daphnia half lethal concentration （LC50） were adopted to study the acute biological leaching toxicity of zinc oxide industrial waste from zinc oxide production plant of Hezhang County of Guizhou Province. The different acidic environment was simulated at the time of zinc oxide slag lixivium on the representation of target organisms acute biological toxicity study, in combination with physical and chemical analysis of the environmental pollution caused by waste residue analysis. The results show that lixivinm play a leading role in the toxic heavy metal elements is Pb and Zn, lixivium biological toxicity from strong to weak were pH4.02 〉 pH4.55 〉 pH5.02 〉 pH5.53 〉 pH5.98 〉 pH6.98 .
出处
《贵州大学学报（自然科学版）》
2009年第2期119-122,共4页
Journal of Guizhou University:Natural Sciences
基金
973国家重点基础研究发展计划项目"喀斯特矿山环境演变与生态安全评价及预警方法的基础研究"(2008CB417209)
贵州省自然科学基金项目"煤矿酸性废水的化学特征及其生物毒性效应的监测与评价"(QJ20072015)
贵州大学211学科重点建设项目"喀斯特含氟煤矿区水环境复合污染特征及环境生物效应研究"
贵州省社会发展攻关项目"贵阳市""两湖一库底质污染治理技术研究"(黔科合SY字[2008]3034)
关键词
次氧化锌废渣
水溞
急性生物毒性
联合毒性
zinc oxide waste
daphnia
acute biological toxicity
joint biological toxicity
