分析化学2011，Vol.39Issue(4)：540-543,4.DOI:10.3724/SP.J.1096.2011.00540
异相Fenton可见光降解微囊藻毒素-LR机理的研究
Heterogeneous Fenton Photodegradation of Microcystin-LR with Visible Light Irradiation
摘要
Abstract
Under the condition of visible light irradiation (λ＞450 nm), the degradation mechanism of microcystin-LR was studied using H2 O2 and FeY catalyst, which is prepared by means of loading Fe2+ to the molecular sieve NaY. The results indicate that the degradation rate of microcystin-LR is up to 90％ in the wide pH range using Vis/FeY/H202 system. Based on the intermediates detected by LC-MS analysis, the possible pathways and three vulnerable oxidation sites are put forward: (1) the conjugated double bonds of the Adda chain, (2) the methoxy group of the Adda chain,(3) unsaturated double bond of the Mdha chain. FeY catalyst is of good stability, having catalytic activity after 5 times repetition, which indicates its potential application to the control of the alga wastewater.关键词
异相/微囊藻毒素-LR/FeY催化剂/降解机理Key words
Heterogeneous/ Microcystin-LR/ Fey Catalyst/ Degradation mechanism引用本文复制引用
方艳芬,陈登霞,黄应平,杨静,程根伟..异相Fenton可见光降解微囊藻毒素-LR机理的研究[J].分析化学,2011,39(4):540-543,4.基金项目
本文系国家重点基础研究发展计划(973)项目前期研究课题(No.2008CB417206)、国家自然科学基金(No.20877048)及湖北省高校优秀中青年创新团队计划(No.T200703)资助 （973）
