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腐殖酸和铁对阿特拉津光降解影响的研究

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Indexed by:期刊论文

Date of Publication:2012-01-05

Journal:环境工程学报

Included Journals:PKU、ISTIC、CSCD

Volume:06

Issue:1

Page Number:81-86

ISSN No.:1673-9108

Key Words:腐殖酸;铁;腐殖酸-铁络合物;光降解

Abstract:为考察除草剂在水体中的自净性能,对模拟太阳光(λ〉290 nm)下腐殖酸和铁元素对阿特拉津的光化学降解进行了研究。结果表明,单独辐照阿特拉津几乎不降解。在分别加入3、5和10 mg/L的腐殖酸时,阿特拉津的降解率分别为34.36%、40.74%和15.66%;在Fe(Ⅲ)投加量从0.01 mmol/L增加到0.2 mmol/L时,阿特拉津的降解率从24.36%增加到34.97%。而在当腐殖酸与铁共存时,阿特拉津降解率则进一步提高。紫外可见光谱和荧光光谱均表明,腐殖酸-铁络合物的形成及其光化学作用,促进了阿特拉津的降解。

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