水生生态系统中的有毒金属：微生物学视角
Toxic metals in aquatic ecosystems: a microbiological perspective.
作者信息
Ford T, Ryan D
机构信息
Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts 02115, USA.
出版信息
Environ Health Perspect. 1995 Feb;103 Suppl 1(Suppl 1):25-8. doi: 10.1289/ehp.95103s125.
Abstract
Microbe-metal interactions in aquatic environments and their exact role in transport and transformations of toxic metals are poorly understood. This paper will briefly review our understanding of these interactions. Ongoing research in Lake Chapala, Mexico, the major water source for the City of Guadalajara, provides an opportunity to study the microbiological aspects of metal-cycling in the water column. Constant resuspension of sediments provides a microbiologically rich aggregate-based system. Data indicate that toxic metals are concentrated on aggregate material and bioaccumulate in the food chain. A provisional model is presented for involvement of microbial aggregates in metal-cycling in Lake Chapala.
摘要
水生环境中的微生物与金属相互作用及其在有毒金属迁移和转化过程中的确切作用目前仍知之甚少。本文将简要回顾我们对这些相互作用的认识。正在墨西哥查帕拉湖开展的研究为了解水柱中金属循环的微生物学方面提供了契机，该湖是瓜达拉哈拉市的主要水源。沉积物的持续再悬浮形成了一个富含微生物的基于聚集体的系统。数据表明，有毒金属集中在聚集体物质上，并在食物链中生物累积。本文提出了一个关于微生物聚集体参与查帕拉湖金属循环的初步模型。
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