标题：Mechanism for the primary transformation of acetaminophen in a soil/water system作者：Liang, Chuanzhou; Lan, Zhonghui; Zhang, Xu; Liu, Yingbao

来源出版物：WATER RESEARCH 卷：98 页码：215-224 DOI: 10.1016/j.watres.2016.04.027 出版年：JUL 1 2016

摘要：The transformation of acetaminophen (APAP) in a soil/water system was systematically investigated by a combination of kinetic studies and a quantitative analysis of the reaction intermediates. Biotransformation was the predominant pathway for the elimination of APAP, whereas hydrolysis or other chemical transformation, and adsorption processes made almost no contribution to the transformation under a dark incubation. Bacillus aryabhattai strain 1-Sj-5-2-5-M, Klebsiella pneumoniae strain 5001, and Bacillus subtilis strain HJ5 were the main bacteria identified in the biotransformation of APAP. The soil-to-water ratio and soil preincubation were able to alter the transformation kinetic pattern. Light irradiation promoted the overall transformation kinetics through enhanced biotransformation and extra photosensitized chemical reactions. The transformation pathways were strongly dependent on the initial concentration of APAP. The main primary transformation products were APAP oligomers and p-amino phenol, with the initial addition of 26.5 and 530 M APAP, respectively. APAP oligomers accounted for more than 95% of transformed APAP, indicating that almost no bound residues were generated through the transformation of APAP in the soil/water system. The potential environmental risks of APAP could increase following the transformation of APAP in the soil/water system because of the higher toxicity of the transformation intermediates.

入藏号：WOS:000376805500024

文献类型：Article

语种：English

作者关键词：Acetaminophen, Soil/water, Biotransformation, Polymerization

扩展关键词：ORGANIC-MATTER; EMERGING CONTAMINANTS; AQUEOUS-SOLUTIONS; SURFACE WATERS; SOIL; BIODEGRADATION; DEGRADATION; KINETICS; PHARMACEUTICALS; AMINOPHENOL

通讯作者地址：Zhang, X (reprint author), Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430079, Peoples R China.

Liu, YB (reprint author), Yangtze Univ, Coll Life Sci, Jingzhou 434025, Peoples R China.

电子邮件地址：xuzhangwhu@gmail.com; liuyingbao2006@163.com

地址：

[Liang, Chuanzhou; Lan, Zhonghui; Zhang, Xu] Wuhan Univ, Sch Resources & Environm Sci, Wuhan 430079, Peoples R China.

[Liu, Yingbao] Yangtze Univ, Coll Life Sci, Jingzhou 434025, Peoples R China.

研究方向：Engineering; Environmental Sciences & Ecology; Water Resources

ISSN：0043-1354

影响因子：5.991