AEROBIC MINERALIZATION OF GAMMA-HCH BY PSEUDOMONAS-PAUCIMOBILIS UT26

被引：45

作者：

NAGASAWA, S ^{[1
]}

KIKUCHI, R ^{[1
]}

NAGATA, Y ^{[1
]}

TAKAGI, M ^{[1
]}

MATSUO, M ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT AGR CHEM,BUNKYO KU,TOKYO 113,JAPAN

来源：

CHEMOSPHERE | 1993年 / 26卷 / 09期

关键词：

D O I：

10.1016/0045-6535(93)90115-L

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

(CO2)-C-14 was evolved from C-14-gamma-hexachlorocyclohexane(gamma-HCH) at a rate of 9.3% of the applied C-14 during 4-days aerobical incubation with Pseudomonas paucimobilis UT26(UT26). 2,5-Dichloro-2,5-cyclohexadiene-1,4-diol (2,5-DDOL) and 2,5-dichlorohydroquinone(2,5-DCHQ) were newly identified as aerobic degradation products of gamma-HCH. It was elucidated that 2,5-DDOL was degraded to 2.5-DCHQ, which was further degraded to mineralization. 2,5-DDOL was considered to be produced through unidentified intermediates, 1,3.4,6-tetrachlorocyclohexa-1,4-diene(1,4-TCDN) and 2,4,5-trichloro-2,5-cyclohexadiene-1-ol(2,4,5-DNOL), by two steps of dechlorinative hydroxylation. These results indicated that UT26 mineralized gamma-HCH to CO2 via 1,4-TCDN, 2,4,5-DNOL, 2,5-DDOL and 2,5-DCHQ. The aerobical mineralization of gamma-HCH by UT26 is considered to be very noticeable from a viewpoint of bioremediation of the contaminated environment.

引用

页码：1719 / 1728

页数：10

共 11 条

[1]

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