%0 Journal Article
%T Photodegradation of bisphenol A in Fe(III)-oxalate complexes solution.<br>Photodegradation of bisphenol A in Fe(Ⅲ)-oxalate complexes solution
%A ZHAN Man-jun
%A YANG Xi
%A XIAN Qi-ming
%A KONG Ling-ren
%A <br>ZHAN Man-jun
%A YANG Xi
%A XIAN Qi-ming
%A KONG Ling-ren
%J 环境科学学报(英文版)
%D 2006
%I 
%X The aqueous photodegradation of bisphenol A (BPA) in the presence of Fe(III)-oxalate complexes (Fe(III)-Ox), which are common compositions of natural water, was investigated in this study. BPA underwent rapid indirect photolysis in Fe(III)-Ox solution under simulated solar irradiation, proceeding pseudo-first-order kinetics. The photolysis rate increased with decreasing pH or initial BPA level and increasing Fe(III)/oxalate concentration ratio. Hydroxyl radicals (*OH), which were generated from the photochemical processes of Fe(III)-Ox complexes and contributed to the photooxidation of BPA, were determined by molecular probe and electron spin resonance (ESR) methods with the steady-state concentration of 2.56 x 10(-14) mol/L. Superoxide anion radical (O2*-) was considered as the precursor of *OH and qualitatively determined by adding nitro blue tetrazolium as well as ESR experiments. Based on the structural analysis of the intermediate photoproducts of BPA in Fe(III)-Ox complexes solution, the possible degradation pathways of BPA were proposed, involving *OH addition, alkyl scission and alky oxidation. The results indicate that the photochemical reactivity of Fe(III) may affect the environmental fate of BPA in natural water significantly.
%K 光降解作用
%K 光致氧化
%K 反应氧
%K 草酸盐
%K 环境污染化学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=B652212BD6E61DA30210C6FE5E5CFC76&yid=37904DC365DD7266&vid=13553B2D12F347E8&iid=E158A972A605785F&sid=E3691231514F8E11&eid=FE17D37BFC90FA6B&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=17