| PFOS前体物质(PreFOSs)降解菌的分离鉴定及其降解特性 |
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| 引用本文： | 赵淑艳,周涛,王博慧,梁田坤,柳丽芬. PFOS前体物质(PreFOSs)降解菌的分离鉴定及其降解特性[J]. 环境科学, 2018, 39(7): 3321-3328 |
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| 作者姓名： | 赵淑艳 周涛 王博慧 梁田坤 柳丽芬 |
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| 作者单位： | 大连理工大学食品与环境学院工业生态与环境工程教育部重点实验室 |
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| 基金项目： | 国家自然科学基金项目（41603106）；中央高校基本科研业务费专项（DUT16RC（4）83） |
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| 摘 要： | 从氟化工厂附近土壤中分离出1株能以全氟辛烷磺酸前体物质(Pre FOSs)为唯一碳源和能源生长的降解菌PF1,经形态观察及16S r DNA基因序列分析,初步鉴定该菌为生丝微菌属(Hyphomicrobium sp.).在温度为30℃、p H为7.0~7.2条件下,菌株PF1对全氟辛基磺酰胺(PFOSA)和N-乙基全氟辛基磺酰胺(N-Et FOSA)48 h降解率分别为14.6%和8.2%,对PFOS无降解能力.对降解产物进行检测和分析,结果表明PFOSA的降解产物为PFOS;N-Et FOSA能被降解生成PFOSA和PFOS,同时也产生少量的全氟辛基磺酰胺乙酸(FOSAA).由此推断Pre FOSs降解途径,在菌株PF1的作用下,PFOSA脱去氨基直接转化成PFOS.NEt FOSA主要有2种降解途径:(1)N-Et FOSA脱乙基产生PFOSA,PFOSA再进一步脱氨基生成PFOS,此为主要途径;(2)NEt FOSA中的N-乙基被氧化成乙酸基生成FOSAA,FOSAA进一步脱去乙酸基生成PFOSA,并最终脱氨基生成PFOS.
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| 关 键 词： | PFOS前体物质(PreFOSs) 微生物降解 生丝微菌属 分离鉴定 降解特性 |
| 收稿时间： | 2017-11-30 |
| 修稿时间： | 2018-01-02 |
Isolation, Identification, and Biodegradation Behaviors of a Perfluorooctane Sulfonic Acid Precursor (PreFOSs) Degrading Bacterium from Contaminated Soil |
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| ZHAO Shu-yan,ZHOU Tao,WANG Bo-hui,LIANG Tian-kun and LIU Li-fen. Isolation, Identification, and Biodegradation Behaviors of a Perfluorooctane Sulfonic Acid Precursor (PreFOSs) Degrading Bacterium from Contaminated Soil[J]. Chinese Journal of Environmental Science, 2018, 39(7): 3321-3328 |
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| Authors: | ZHAO Shu-yan ZHOU Tao WANG Bo-hui LIANG Tian-kun LIU Li-fen |
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| Affiliation: | Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Food and Environment, Dalian University of Technology, Panjin 124221, China,Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Food and Environment, Dalian University of Technology, Panjin 124221, China,Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Food and Environment, Dalian University of Technology, Panjin 124221, China,Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Food and Environment, Dalian University of Technology, Panjin 124221, China and Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Food and Environment, Dalian University of Technology, Panjin 124221, China |
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| Abstract: | |
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| Keywords: | perfluorooctane sulfonate (PFOS) precursors (PreFOSs) biodegradation Hyphomicrobium sp. isolation and identification degradation characteristics |
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