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Alternative TitleHeterogeneous Fenton Photodegradation of Microcystin-LR with Visible Light Irradiation
方艳芬1,2; 陈登霞3; 黄应平3; 杨静3; 程根伟1
Source Publication分析化学
Contribution Rank1
Abstract在可见光照射下(lambda>450 nm),以负载Fe~(2+)的NaY分子筛制备得到Fe~(2+)-NaY催化剂(简称FeY),研究了FeY/H_2O_2降解微囊藻毒素-LR(MC-LR)的机理,发现在宽pH范围内, Vis/FeY/H_2O_2体系对MC-LR降解率大于90%. 采用LC-MS跟踪分析降解中间产物,推测了可能的降解路径和3个易被氧化的位点: N-甲基脱氢丙氨酸(Mdha链)上的不饱和双键,3-氨基-9-甲氧基-2,6,8-三甲基-10-苯基-4(E),6(E)-二烯酸(Adda链)上的共轭二烯双键与甲氧基. FeY催化剂稳定性良好,循环使用5次仍保持高活性,此催化体系对藻毒素废水的处理具有潜在的应用价值
Other AbstractUnder the condition of visible light irradiation (lambda>450 nm), the degradation mechanism of microcystin-LR was studied using H_2O_2and FeY catalyst, which is prepared by means of loading Fe~(2+) 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/H_2O_2system. 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
Keyword异相 微囊藻毒素-LR FeY催化剂 降解机理
Indexed ByCSCD
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Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author程根伟
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
方艳芬,陈登霞,黄应平,等. 异相Fenton可见光降解微囊藻毒素-LR机理的研究[J]. 分析化学,2011,7(3):540-543.
APA 方艳芬,陈登霞,黄应平,杨静,&程根伟.(2011).异相Fenton可见光降解微囊藻毒素-LR机理的研究.分析化学,7(3),540-543.
MLA 方艳芬,et al."异相Fenton可见光降解微囊藻毒素-LR机理的研究".分析化学 7.3(2011):540-543.
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