根际中三氯乙烯的微生物降解：在废弃场地生物修复中的潜在应用
Microbial degradation of trichloroethylene in the rhizosphere: potential application to biological remediation of waste sites.
作者信息
Walton B T, Anderson T A
机构信息
Environmental Sciences Division, Oak Ridge National Laboratory, Tennessee 37831-6038.
出版信息
Appl Environ Microbiol. 1990 Apr;56(4):1012-6. doi: 10.1128/aem.56.4.1012-1016.1990.
Abstract
The possibility that vegetation may be used to actively promote microbial restoration of chemically contaminated soils was tested by using rhizosphere and nonvegetated soils collected from a trichloroethylene (TCE)-contaminated field site. Biomass determinations, disappearance of TCE from the headspace of spiked soil slurries, and mineralization of [14C]TCE to 14CO2 all showed that microbial activity is greater in rhizosphere soils and that TCE degradation occurs faster in the rhizosphere than in the edaphosphere. Thus, vegetation may be an important variable in the biological restoration of surface and near-surface soils.
摘要
通过使用从三氯乙烯（TCE）污染场地采集的根际土壤和非植被土壤，测试了利用植被积极促进化学污染土壤微生物修复的可能性。生物量测定、加标土壤泥浆顶空中TCE的消失以及[14C]TCE矿化生成14CO2均表明，根际土壤中的微生物活性更高，且根际中TCE的降解速度比土壤圈更快。因此，植被可能是表层和近表层土壤生物修复中的一个重要变量。
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