再力花对河涌底泥中多溴联苯醚的去除  

Removal of Polybrominated Diphenyl Ethers in River Sediments by Thalia Dealbata

作　　者：杨雷峰[1] 尹华[2] 叶锦韶[1] 彭辉[3] 谢丹平[4] 刘绍伟[4] 

机构地区：[1]暨南大学环境工程系广东省高校水土环境毒害性污染物防治与生物修复重点实验室,广州510632 [2]华南理工大学环境与能源学院工业聚集区污染控制与生态修复教育部重点实验室,广州510006 [3]暨南大学化学系,广州510632 [4]环境保护部华南环境科学研究所,广州510656

出　　处：《农业环境科学学报》2015年第1期130-136,共7页Journal of Agro-Environment Science

基　　金：国家自然科学基金委-广东省联合基金重点项目(U0933002);广东省自然科学基金重点项目(S2013020012808);中央高校基本科研业务费专项基金(2013ZM0126);教育部产学研结合项目(2012B091000055);广州市环保局科技计划项目(穗财建(2012)399号);番禺区科技局科技计划项目(2010-专-12-06)

摘　　要：选用河涌常见植物——再力花对河涌底泥中多溴联苯醚(PBDEs)进行原位生物修复研究,通过室内盆栽实验,考察了植物在修复过程中的作用、修复过程中多溴联苯醚种类和含量的变化以及底泥微生物活性对PBDEs去除的影响。结果表明,再力花可以有效提高底泥中十溴联苯醚(BDE-209)的去除率,历经390 d,空白组BDE-209含量由1.33 mg·kg-1降至1.13 mg·kg-1,处理组则降至0.97 mg·kg-1,去除率由15%提高到27%。使用GC-MS对BDE-209降解产物进行检测分析,结果表明再力花对底泥中BDE-209降解过程中会产生BDE-207、BDE-206等三溴-九溴联苯醚产物。对底泥中的微生物活性和去除率结果分析表明,植物的种植可以提高底泥中微生物的活性,进而提高BDE-209的去除率。Thalia dealbata is a fast-growing and quick-multiplying aquatic plant, and may be used to phytoremediate polybrominated diphenyl ethers(PBDEs)in river sediments. A pot experiment was conducted in a greenhouse to investigate the changes of type and concentration of PBDEs and the microbial activity in sediments under Thalia dealbata. Thalia dealbata significantly enhanced the removal rate of BDE-209 in the sediments. After 390 days, the concentration of BDE-209 in control and treatment reduced to 1.13 mg·kg-1and 0.97 mg·kg-1from 1.33 mg·kg-1, respectively, with removal rate increased from 15% to 27%. GC-MS analysis suggested that degradation products of BDE-209 varied from tribromodiphenyl ethers to nonabromodiphenyl ethers such as BDE-207 and BDE-206. The relationship between microbial activity and removal efficiency of BDE-209 in sediments showed that planting Thalia dealbata enhanced microbial activity, and thus accelerated removal of BDE-209. The residual BDE-209 was negatively correlated with microbial activity characterized by FDA.

关 键 词：多溴联苯醚 植物修复 脱溴 再力花 

分 类 号：X52[环境科学与工程—环境工程]