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Chemical change of chlorinated bisphenol A by ultraviolet irradiation and cytotoxicity of their products on Jurkat cells.

Abstract：

:Chlorinated derivatives of bisphenol A (ClBPAs) have been detected in wastewater from waste paper recycling plants. BPA and ClBPAs are always exposed to ultraviolet (UV) radiation in the environment and consequently various photoproducts might be produced. Acute cytotoxicity of photoproducts of BPA and ClBPAs are not known. In this study, we investigated the cytotoxicity and chemical structure of photoproducts of BPA and ClBPAs (3-chlorobisphenol A (3-ClBPA), 3,3'-dichlorobisphenol A (3,3'-diClBPA) and 3,3',5-trichlorobisphenol A (3,3',5-triClBPA)) after UV irradiation (UVA, UVB and UVC). The toxicities of photoproducts on Jurkat cells were determined by Alamar Blue assay, and the chemical structures of the photoproducts were identified using GC/MS. The cytotoxicities of 3-ClBPA and 3,3'-diClBPA were higher than that of BPA and 3,3',5-triClBPA. In addition, the toxicities of ClBPAs were increased by the irradiation of UVB and UVC at 100J/cm(2) and decreased at 1000J/cm(2) in comparison with those at 100J/cm(2), indicating that their structures had changed. 3-Hydroxybisphenol A (3-OHBPA) was detected in the photoproducts of 3-ClBPA irradiated with UVB and UVC at 100J/cm(2), and 3-OHBPA and 3-chloro-3'-hydroxybisphenol A (3-Cl-3'-OHBPA) were detected in those of 3,3'-diClBPA. However, these hydroxylated BPAs were not detected in the photoproducts exposed to 1000J/cm(2). The cytotoxicity of 3-OHBPA was the almost same as ClBPAs after UVB and UVC irradiation. These results indicate that the formation of hydroxylated BPAs might contribute to the increase in toxicity caused by UV irradiation.

journal_name

Environ Toxicol Pharmacol

journal_title

Environmental toxicology and pharmacology

authors

Mutou Y,Ibuki Y,Terao Y,Kojima S,Goto R

doi

10.1016/j.etap.2005.09.005

subject

Has Abstract

pub_date

2006-05-01 00:00:00

pages

283-9

issue

3

eissn

1382-6689

issn

1872-7077

pii

S1382-6689(05)00179-1

journal_volume

21

pub_type

杂志文章

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