Acute toxicity formation potential of benzophenone-type UV filters in chlorination disinfection process  

作　　者：Qi Liu Zhenbin Chen Dongbin Wei Yuguo Du 

机构地区：[1]School of Material Science and Engineering, Lanzhou University of Technology [2]State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences [3]State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology

出　　处：《Journal of Environmental Sciences》2014年第2期440-447,共8页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 21377143, 21077123 and 20877090)

摘　　要：Benzophenones （BPs） are a class of widely used UV filters, which have been frequently detected within multiple environmental matrices. Disinfection is a necessary process in water treatment processes. The transformation behaviors and toxicity changes of 14 BP-type UV filters during chlorination disinfection treatment were investigated in this study. A new index, the acute toxicity formation potential, was proposed to evaluate the toxicity changes and potential risks of BP-type UV filters during chlorination treatment. It was found that 13 of 14 BP-type UV filters exhibited toxicity decreases in the chlorination disinfection process, more or less, while one showed a toxicity increase. The toxicity changes were dependent on substitution effects, such that 2,4-di-hydroxylated or 3-hydroxylated BPs exhibited significant toxicity decreases after chlorination treatment due to the ready cleavage of the aromatic ring. Importantly, the acute toxicity changes could be duplicated in an ambient water matrix.Benzophenones （BPs） are a class of widely used UV filters, which have been frequently detected within multiple environmental matrices. Disinfection is a necessary process in water treatment processes. The transformation behaviors and toxicity changes of 14 BP-type UV filters during chlorination disinfection treatment were investigated in this study. A new index, the acute toxicity formation potential, was proposed to evaluate the toxicity changes and potential risks of BP-type UV filters during chlorination treatment. It was found that 13 of 14 BP-type UV filters exhibited toxicity decreases in the chlorination disinfection process, more or less, while one showed a toxicity increase. The toxicity changes were dependent on substitution effects, such that 2,4-di-hydroxylated or 3-hydroxylated BPs exhibited significant toxicity decreases after chlorination treatment due to the ready cleavage of the aromatic ring. Importantly, the acute toxicity changes could be duplicated in an ambient water matrix.

关 键 词：acute toxicity formation potential benzophenones UV filters chlorination photobacterium assay 

分 类 号：X50[环境科学与工程—环境工程]