CADMIUM BIOSORPTION AND TOXICITY TO 6 CADMIUM-RESISTANT GRAM-POSITIVE BACTERIA ISOLATED FROM CONTAMINATED SOIL

被引：14

作者：

BOULARBAH, A

MOREL, JL

BITTON, G

GUCKERT, A

机构：

[1] Department of Agronomy and Environment, INRA, ENSAIA, Vandoeuvre, 54500, 2, avenue de la Forět de Haye

[2] Department of Environmental Engineering Sciences, University of Florida, Gainesville, Florida, 32611, AP Black Hall

[3] Department of Agronomy and Environment, INRA, ENSAIA, Vandoeuvre, 54500, 2, avenue de la Forět de Haye

来源：

ENVIRONMENTAL TOXICOLOGY AND WATER QUALITY | 1992年 / 7卷 / 03期

关键词：

D O I：

10.1002/tox.2530070304

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Six Cd-resistant bacterial strains were isolated from a soil receiving dredged sediments and containing Cd at concentration of 50 mg kg-1. The isolates, identified as gram-positive, were studied with regard to their ability to tolerate and accumulate Cd at concentrations varying from 0 to 100 mg L-1. Results showed an increase in accumulated Cd in bacteria with increasing Cd concentrations in solution. Isolates were shown to tolerate higher Cd concentrations than a Bacillus subtilis strain used as a control. One of the isolates, identified as Bacillus brevis, was found to be the most resistant to Cd, with an ability to accumulate the toxic metal up to 70 mg-1 of cells (dry weight). Mn was found to reduce Cd toxicity and accumulation in B. brevis. This strain may have some potential interest in reclamation of metal-contaminated soils.

引用

页码：237 / 246

页数：10

共 45 条

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