胞外聚合物对土壤中苯并芘的降解  

Degradation of Benzo[a]pyrene in Soils by Extracellular Polymeric Substances

作　　者：甄凯 单德鑫[1] 欧瑞鹏 赵汉青 郭玉 ZHEN Kai;SHAN Dexin;OU Ruipeng;ZHAO Hanqing;GUO Yu(College of Resources and Environment,Northeast Agricultural University,Harbin 150030,China)

机构地区：[1]东北农业大学资源与环境学院,黑龙江哈尔滨150030

出　　处：《山西农业科学》2018年第9期1509-1511,共3页Journal of Shanxi Agricultural Sciences

基　　金：国家重点研发计划课题(2017YFD030050003)

摘　　要：研究从Pseudomonas sp.DNBe-S1中分离出的胞外聚合物(EPS)对苯并芘(Ba P)在污染土壤中的降解。结果表明,EPS的主要成分是蛋白质,含量为68%;EPS可以促进土壤中Ba P的降解,并且Ba P的降解率随着EPS的添加体积增加而提高。35 d后,Ba P在土壤中的降解率从20%(未添加EPS)提高到79%(添加15 m L EPS悬浮液)。该结果可为EPS在多环芳烃(PAHs)污染土壤的生物修复中的作用提供新的见解。The extracellular polymeric substances（EPS） isolated from Pseudomonas sp. DNBe-S1 was applied in studies of degradation of benzo[a]pyrene（Ba P）in contaminated soils. The results showed that the main composition of EPS was protein with content of 68%, and EPS enhanced Ba P degradation in soils. Moreover, the degradation rate of Ba P increased as the initial addition volume of EPS increased. After 35 days, the degradation rate of Ba P in soils increased from 20%（no EPS addition）to 79%（addition of 15 m L EPS suspension）. The above results can provide new insight into the function of EPS in bioremediation of polycyclic aromatic hydrocarbons（PAHs）contaminated soils.

关 键 词：胞外聚合物 苯并芘 土壤 降解 

分 类 号：X53[环境科学与工程—环境工程] X592