表层土添加TiO2与土壤厚度对多菌灵光解的影响

doi:CNKI:SUN:NCST.0.2009-04-019

生态与农村环境学报 ›› 2009, Vol. 25 ›› Issue (4): 92-94.doi: CNKI:SUN:NCST.0.2009-04-019

表层土添加TiO₂与土壤厚度对多菌灵光解的影响

汪东, 王敬国, 慕康国

中国农业大学资源与环境学院

收稿日期:2009-03-16 出版日期:2009-10-25 发布日期:2011-04-08
通讯作者: 慕康国中国农业大学资源与环境学院 E-mail:kgmu@cau.edu.cn
作者简介:汪东(1985－)，男，安徽安庆人，硕士生，主要从事农药光催化降解研究。E-mail:wangdong85918@126.com
基金资助:
“十一五”国家科技支撑计划(2006BAD07B03);国家高技术研究发展计划(2006AA10Z423)

Effect of Addition of TiO₂ and the Thickness of Surface Soil on Photodegradation of Carbendazim Therein

WANG Dong, WANG Jing-Guo, MU Kang-Guo

College of Resources and Environment,China Agricultural University

Received:2009-03-16 Online:2009-10-25 Published:2011-04-08
Contact: MU Kang-Guo College of Resources and Environment,China Agricultural University E-mail:kgmu@cau.edu.cn

摘要/Abstract

摘要： 以太阳光为光源,研究了TiO₂用量、土壤厚度对多菌灵在土壤中的光解行为的影响。结果表明:多菌灵的光解符合准一级动力学方程,随添加TiO₂用量从0增至200 mg·kg^-1,多菌灵的一级光解动力学常数也增大,且2者的线性相关系数为0.962,其中最快的降解速率是最慢的2.85倍。在含有TiO₂的土壤中,多菌灵在不同厚度土壤中的光解速率不同,土壤厚度较大情况下,多菌灵半衰期也较大。

关键词: 太阳光, 多菌灵, 光催化降解, TiO₂

Abstract: Effects of some factors,like amount of TiO₂ added as the catalyst,initial concentration of carbendazim,thickness of the surface soil on photolysis of carbendazim therein were studied under natural sunlight.Results show that photodegradation of carbendazim fitted the quasi-first-order kinetic equation.The constant of the equation increased from 0.015 8 to 0.045 0 h^-1 with increasing TiO₂ rate from 0 to 200 mg·kg^-1,showing significant linear correlation(r=0.962),and the highest photodegradation rate reached 2.85 times as much as the slowest.The half-life of carbendazim increased with the increasing of soil thickness.

Key words: solar radiation, carbendazim, photodegradation, TiO₂

中图分类号:

汪东, 王敬国, 慕康国. 表层土添加TiO₂与土壤厚度对多菌灵光解的影响[J]. 生态与农村环境学报, 2009, 25(4): 92-94.

WANG Dong, WANG Jing-Guo, MU Kang-Guo. Effect of Addition of TiO₂ and the Thickness of Surface Soil on Photodegradation of Carbendazim Therein[J]. Journal of Ecology and Rural Environment, 2009, 25(4): 92-94.

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表层土添加TiO₂与土壤厚度对多菌灵光解的影响

Effect of Addition of TiO₂ and the Thickness of Surface Soil on Photodegradation of Carbendazim Therein

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