| 异相Fenton可见光降解微囊藻毒素-LR机理的研究 | |
| Alternative Title | Heterogeneous 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
| |
| 2011 | |
| Source Publication | 分析化学
 |
| ISSN | 0253-3820 |
| Volume | 7Issue:3Pages:540-543 |
| Subtype | Article |
| Contribution Rank | 1 |
| 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 Abstract | Under 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 By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:4181154 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/26028 |
| Collection | 山地表生过程与生态调控重点实验室 |
| Corresponding Author | 程根伟 |
| Affiliation | 1.中国科学院成都山地灾害与环境研究所; 2.中国科学院研究生院; 3.三峡库区生态环境教育部工程研究中心 |
| 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 异相Fenton可见光降解微囊藻毒素_L（1020KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment