Pathways and Fate of Selenium in Aquatic and Terrestrial Ecosystems
(0) The transport and fate of selenium (Se) varies substantially in different environments.Different physical,chemical,and biological factors significantly influence the pathways or transport of se within aquatic and terrestrial ecosystems.Different patterns of Se partitioning in different ecosystems are not only due to the change of system components but also to biogenic chemical transformations.Pathways of Se in aquatic/ terrestrial ecosystems primarily consist of the following ecological processes: bioaccumulation,biotransformation,volatilization,and sedimentation (or buildup in soil). The biogeochemical cycling of Se varies significantly under different environmental conditions.In the past two decades,Se transport and fate in aquatic ecosystems have been studied extensively since the discovery of Se toxicity to wildlife at the Kesterson Reservoir in central California in late 1980s. The chemical behavior of Se in soil-plant systems was also studied in relation to phytoremediation of Se-contaminated soil and water. This paper reviews the pathways and fate of Se in Se-polluted wetlands and agricultural environment,with a special focus on the quantitative significance of biological volatilization of Se.
Z.-Q.Lin
Environmental Sciences Program and Department of Biological Sciences,Southern Illinois University,Edwardsville,Illinois 62026,USA
国际会议
The First International Conference on Selenium in the Environment and Human Health(第一届硒与环境和人体健康国际会议)
苏州
英文
7-8
2009-10-01（万方平台首次上网日期，不代表论文的发表时间）