引用本文:林匡飞,徐小清,郑利,邵志慧,项雅玲.土壤锗污染对土壤酶活性的生态毒理效应[J].土壤学报,2005,42(1):106-110. DOI:10.11766/trxb200403080116
Lin Kuangfei,Xu Xiaoqing,Zheng Li,Shao Zhihui,Xiang Yaling.ECO-TOXICOLOGICAL EFFECTS OF Ge-POLLUTION ON SOIL ENZYME ACTIVITIES IN SOIL[J].Acta Pedologica Sinica,2005,42(1):106-110. DOI:10.11766/trxb200403080116
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土壤锗污染对土壤酶活性的生态毒理效应
林匡飞1, 徐小清2, 郑利2, 邵志慧3, 项雅玲3
1.华东理工大学危险化学物质风险评价与控制研究中心, 上海, 200237;2.中国科学院水生生物研究所, 武汉, 430072;3.农业部环境质检中心, 武汉, 430070
摘要:
通过室内培养和盆栽试验,研究了土壤添加锗(Ge)对黄棕壤过氧化氢酶、脱氢酶、脲酶、碱性磷酸酶、转化酶的生态毒理效应。结果表明,在土壤Ge含量2~200 mg kg-1范围,土壤Ge对脱氢酶、碱性磷酸酶、转化酶活性抑制作用不明显。土壤Ge对土壤过氧化氢酶和脲酶活性有明显抑制作用,脲酶受Ge的抑制作用最强。土壤Ge含量与脲酶活性之间具有显著负相关,脲酶抑制率可作为Ge生态风险评价的一项生物指示物。
关键词:  Ge污染  酶活性  抑制率  生态毒理效应  生物指示物
基金项目:* 湖北省科技攻关计划引导项目(2001AA201C1)资助
ECO-TOXICOLOGICAL EFFECTS OF Ge-POLLUTION ON SOIL ENZYME ACTIVITIES IN SOIL
Lin Kuangfei1, Xu Xiaoqing2, Zheng Li2, Shao Zhihui3, Xiang Yaling3
1.Research Center of Risk Assessment and Management on Hazardous Chemicals, East China University of Science and Technology, Shanghai 200237, China;2.Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China;3.Agro-Environmental Monitoring Center of Wuhan, MOA, Wuhan 430070, China
Abstract:
Eco-toxicological effects of germanium on activities of catalase,dehydrogenase,urease,phosphatase and invertase in brown-yellow soil were studied by means of indoor culture and pot culture experiments.The results showed that when Ge concentration ranged between 2~200 mg kg-1 in the soil,its inhibiting effect on soil dehydrogenase,phosphatase and invertase was not significant,but quite so the activity of soil catalase and urease;especially the latter.A significant negative relationship between urease activity and Ge concentration of soil could be observed,so it is feasible to use inhibition rate of soil urease as a bio-indicator for ecological risk assessment of Ge pollution in the soil.
Key words:  Germanium pollution  Enzyme activity  Inhibition rate  Eco-toxicological effect  Bio-indicator