中国科学院水生生物研究所机构知识库
Advanced  
IHB OpenIR  > 中科院水生所知识产出(2009年前)  > 期刊论文
学科主题: Chemistry ; Multidisciplinary
题名: Photodegradation dynamics of pure microcystin variants with illumination of fixed wavelength UV-lights
作者: Chen, W ; Gan, NQ ; Song, LR
通讯作者: Chen, W, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: microcystin ; photodegradation ; humic acid ; kinetic ; isomerization ; UV irradiation
刊名: ACTA CHIMICA SINICA
发表日期: 2004
卷: 62, 期:2, 页:142-147
收录类别: SCI
部门归属: Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
摘要: Photolysis of microcystins by UV irradiation and the effects of different environmental factors on efficiency of UV degradation were studied. The results indicated that the rates of the photolytical degradation reactions of microcystin-LR and RR-follow pseudo-first-order kinetic process. The results also showed that the concentrations of two microcystin variants decreased significantly by UV-C Irradiation; the wavelength and intensitiy of UV irradiation are two very important factors affecting the rate of degradation; temperature and pH value could also affect the half life of degradation rates. When irradiated by weaker UV-Iight, isomerization could be detected in the course of photolytical degradation. The concentrations of two isomers transformed from microcystin-LR reached its maximum at the third minute and decreased with the time afterwards. To simulate photolysis of microcystins in the field water body, microcystins with low concentration were used. It was found that UV-C illumination was capable of decomposing over 95% of microcystins within 40 min. In the presence of humic substances the photodecomposition slowed down to a certain extent. These results are valuable in using UV irradiation for elimination microcystins from raw water.
WOS记录号: WOS:000188418600007
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9578
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Photodegradation Dynamics of Pure Microcystin Variants with Illumination.pdf(408KB)----开放获取--View Download

Recommended Citation:
Chen, W; Gan, NQ; Song, LR.Photodegradation dynamics of pure microcystin variants with illumination of fixed wavelength UV-lights,ACTA CHIMICA SINICA,2004,62(2):142-147
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Chen, W]'s Articles
[Gan, NQ]'s Articles
[Song, LR]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Chen, W]‘s Articles
[Gan, NQ]‘s Articles
[Song, LR]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Photodegradation Dynamics of Pure Microcystin Variants with Illumination.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2016  中国科学院水生生物研究所 - Feedback
Powered by CSpace