摘要
对水体中主要的3种重金属(铜、镉、铅)对青萍抗氧化酶系统的几种酶,包括过氧化物酶(POD)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)的活性,丙二醛(MDA)的含量,可溶性蛋白含量及叶绿体色素含量等指标的影响进行了研究。研究表明:青萍对镉污染反应最为敏感,对铜的反应相对缓和一些;青萍在铅的胁迫下表现出无序的状态。因此,青萍不适合应用于重金属镉污染的富营养化水体的治理和生态修复中。
The influence of three kinds of heavy metal (copper, cadmium, lead) on the activities of peroxidase(POD), superoxide dismutase(SOD),catalase(CAT) and the contents of malondialdehyde(MDA), soluble protein and chlorophyll of Lemna minor was investigated. Lemna minor was more sensitive to cadmium than to copper. Some indexes of Lemna minor exposed to lead under menace conditions have no rules. The results' suggest that Lemna minor is not suitable for recovering the eutrophicated water with cadmium pollution.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2004年第z1期40-44,共5页
Research of Environmental Sciences
基金
国家重点基础研究发展计划项目(2002CB412300)
中日技术合作项目(DF)
关键词
重金属污染
青萍
抗氧化酶
富营养化
生态修复
heavy metal pollution
Lemna minor
antioxidant enzymes
eutrophication
ecological restoration
