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题名:
Kinetic and mechanism studies of musk tonalide reacted with hydroxyl radical and the risk assessment of degradation products
作者: Fang, HS; Li, GY; Yao, SD; Liang, XM; An, TC
刊名: CATALYSIS TODAY
出版日期: 2017
卷号: 281, 页码:642-648
关键词: Tonalide ; Hydroxyl radical ; Laser flash photolysis ; Risk assessment
DOI: 10.1016/j.cattod.2016.06.021
文章类型: 期刊论文
英文摘要: Tonalide was extensively used as fragrances in various personal care products and recognized as emerging contaminant recently. In this study, the transient reactions of hydrophobic tonalide with hydroxyl radical (center dot OH), one of highly reactive oxygen species (ROSs), was firstly investigated in acetonitrile through direct observation using laser flash photolysis. Two transient intermediates were formed with the peak centered at 360 and 450 nm, and the bimolecular reaction rate constants of tonalide with center dot OH were determined in both water and acetonitrile solutions with values of 4.04 x 10(9) and 1.95 x 10(9) M-1 respectively. Then, the photocatalytic experiments in a heterogeneous TiO2 system were carried out to study the decomposition kinetics of tonalide with "OH, which was confirmed as the dominant ROSs in photocatalytic system. Five degradation products were identified with molecule weight of 260, 272 and 274. Finally, the potential risks of reaction products formed through the reactions of tonalide with center dot OH were further investigated. It is found that the toxicity towards luminescent bacterium (Photobacterium phosphoreum) was not changed so much, and the estrogenic activity increased a little bit during the degradation of tonalide by center dot OH. (C) 2016 Elsevier B.V. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000390626400032
ISSN号: 0920-5861
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27363
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Fang, HS,Li, GY,Yao, SD,et al. Kinetic and mechanism studies of musk tonalide reacted with hydroxyl radical and the risk assessment of degradation products[J]. CATALYSIS TODAY,2017-01-01,281:642-648.
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文件名: Kinetic and mechanism studies of musk tonalide reacted with hydroxyl radical and the risk assessment of degradation products.pdf
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