Formation of chlorinated intermediate from bisphenol A in surface saline water under simulated solar light irradiation

Environmental Science & Technology
Hui LiuShuo Chen

Abstract

Chlorinated organic compounds are generally of great concern, but many uncertainties exist regarding how they are generated. To illustrate the possibility of photochemical formation of organochlorine compounds in natural water, the phototransformation of bisphenol A (BPA) in aqueous saline solution containing Fe(lll) and fulvic acid (FA), and in coastal seawater under simulated solar light irradiation was investigated. 2-(3-Chloro-4-hydroxyphenyl)-2-(4-hydroxyphenyl) propane (3-CIBPA) and 2,2-bis(3-chloro-4-hydroxyphenyl) propane (3,3-diCIBPA) were the main chlorinated derivatives during the processes. Laser flash photolysis (LFP) and electron spin resonance (ESR) results indicated that the chlorination of BPA was most likely due to the formation of Cl2(*-) radical as a consequence of Fe(III) irradiation, yielding Cl* and OH* radical species and finally forming Cl2(*-) radical upon further reaction with chloride. The formation of Fe(III)-FA complex, which is a normal coexistence configuration of Fe(III) and FA in natural water, promoted the BPA chlorination through producing more Cl2(*-) radical. Moreover, FA had two opposite effects: forming Fe(III)-FA complex to enhance Cl2(*-) formation and competing radicals with BPA, which...Continue Reading

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Citations

Jun 29, 2011·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·M PandelovaK-W Schramm
Aug 7, 2012·The Science of the Total Environment·Fatima Tamtam, Serge Chiron
Apr 17, 2012·The Science of the Total Environment·Paola CalzaClaudio Minero
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Jun 4, 2015·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Xuefeng HuYongming Luo
Aug 30, 2019·The Science of the Total Environment·Chen ZhongQingguo Huang
Mar 27, 2015·Chemical Reviews·Lucy J Carpenter, Philip D Nightingale

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