Acute toxicity variation of hydroxyl benzophenone UV filters during photoinduction-chlorination disinfection processes
Acute toxicity variation of hydroxyl benzophenone UV filters during photoinduction-chlorination disinfection processes
复制标题
光诱导氯化消毒过程中羟基二苯甲酮紫外线过滤剂的急性毒性变化
DOI：
10.1016/j.jes.2016.05.020
复制
发表时间：
2017
影响因子：
6.9
通讯作者：
Du Yuguo
中科院分区：
文献类型：
--
作者：
Yu Qi;Wei Dongbin;Liu Wei;Du Yuguo
二苯甲酮（BPs）是一组广泛使用的紫外线过滤剂，具有多种显著的毒性作用。以11种BPs为目标化合物，采用发光菌急性毒性试验和急性毒性形成潜力指数（ATFP）评价了BPs在光诱导-氯化消毒前后的毒性变化。在不同pH值和加氯量条件下进行正交试验。11种BPs经光诱导-氯化处理后的ATFP值特征如下：（1）随着BPs分子中羟基数目的增加，ATFP值降低。(2)对于羟基数相同的BP，羟基位于3位或4位时的ATFP高于2位时的ATFP;羟基分布在两个苯环上的BP的ATFP高于一个苯环上的BP。(3)在BP分子中引入甲氧基和磺酸基可提高ATFP值。(4)ATFPs具有pH依赖性，在中性条件下最低，在酸性条件下最高。(5)随着投氯量的增加，ATFP先增加后减少。研究结果可为科学评价光诱导-氯化消毒过程中BPs的环境归趋和潜在风险提供参考。
Benzophenones (BPs), a group of widely used UV filters, exert multiple, significant toxicity effects. The 11 BPs were selected as target compounds, and the photobacterium acute toxicity test and an index for acute toxicity formation potential (ATFP) were used to evaluate the toxicity variation of BPs before and after a photoinduction–chlorination disinfection process. Orthogonal experiments were performed at different pH values and chlorine dosages. The characteristics of ATFP values for 11 BPs after a photoinduction–chlorination process can be summarized as follows: (1) The ATFPs decreased as the hydroxyl group number increased in BPs molecules. (2) For those BPs with the same hydroxyl group number, the ATFPs were higher when the hydroxyl groups were located at the 3- or 4-position than those at the 2-position; the BPs with hydroxyl groups distributed on two benzene rings had higher ATFPs than those on one ring. (3) Introducing a methoxyl group and sulfonic acid group into BP molecules increased the ATFP values. (4) The ATFPs were pH-dependent, the values of which were lowest at the neutral condition and highest at the acid condition. (5) The ATFPs increased and then decreased as the chlorine dosage increased. The results can be used as a reference to scientifically evaluate the environmental fate and potential risk of BPs in photoinduction–chlorination disinfection processes.