| 杨雷峰,尹华,叶锦韶,彭辉,谢丹平,刘绍伟.再力花对河涌底泥中多溴联苯醚的去除[J].农业环境科学学报,2015,34(1):130-136. |
| 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 |
| 投稿时间：2014-08-14 |
| DOI：10.11654/jaes.2015.01.019 |
| 中文关键词: 多溴联苯醚 植物修复 脱溴 再力花 |
| 英文关键词: polybrominated diphenyl ethers phytoremediation debromination Thalia dealbata |
| 基金项目: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) |
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| 中文摘要: |
| 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. |
| 英文摘要: |
| 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-1 and 0.97 mg·kg-1 from 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. |
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