STUDY ON PHOTO-DEGRADATION OF PYRETHROID IN JIULONG RIVER ESTUARY WATERS

被引：0

作者：

Liang, Yanru ^{[1
,2
,3
]}

Yuan, Jianbin ^{[4
]}

Jing, Yan ^{[3
]}

机构：

[1] Guangxi Key Lab Beibu Gulf Marine Biodivers Conse, 12 Binhai New Town,Binhai Rd, Qinzhou, Guangxi Provinc, Peoples R China

[2] Guangxi Coll & Univ Key Lab Exploitat & Prot Beib, 12 Binhai New Town,Binhai Rd, Qinzhou, Guangxi Provinc, Peoples R China

[3] Qinzhou Univ, 12 Binhai New Town,Binhai Rd, Qinzhou, Guangxi Provinc, Peoples R China

[4] Guangdong Ocean Univ, 1 Sea Rd, Zhanjiang City, Guangdong, Peoples R China

来源：

FRESENIUS ENVIRONMENTAL BULLETIN | 2017年 / 26卷 / 06期

关键词：

Estuary; Pyrethroid; Fenvalerate; Photo-degradation; PHOTOCHEMISTRY;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This article study on photo-degradation of pyrethroid pesticides in estuary water by means of HPLC-DAD. Samples were degraded in a self-made photo-reactor, separated through integrating high performance liquid chromatography (HPLC) and tested with diode array detector (DAD). Photo-degradation reaction of fenvalerate was studied. The results show that the photo-degradation kinetics of fenvalerate in Jiulong River estuary water follows the first-order reaction. Degradation rate of fenvalerate was strongly influ- enced by pH, initial concentration of H2O2 and illumination time, whereas the effect of salinity on degradation rate of fenvalerate is not obvious in the natural water. Degradation rate of fenvalerate in this estuary water was 97% after 10 seconds under UV light, and the main degradation products are not stable in this degradation system, with their concentration first increasing and then decreasing, reach to maximum in 8 seconds, degradation rate is 71.6% in 10 seconds.

引用

页码：4097 / 4102

页数：6

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