石河子市饮用水中卤乙酸污染水平及健康风险评估

doi:10.19741/j.issn.1673-4831.2018.0855

摘要/Abstract

摘要： 为评价石河子市生活饮用水中卤乙酸（HAAs）对人体健康产生的潜在危害，采用气相色谱仪-微池电子捕获检测器（GC-μECD）法对石河子市某水厂原水、出厂水和管网水卤乙酸浓度进行检测，分析不同工艺和季节出水中卤乙酸浓度变化，并对饮水暴露途径所引起的健康风险做出评价。结果表明石河子市某水厂出水中一氯乙酸、二氯乙酸、一溴乙酸、二溴乙酸、三溴乙酸、一溴二氯乙酸、二溴一氯乙酸和溴氯乙酸平均质量浓度分别为ND、0.21、0.45、5.90、2.00、1.10、4.50和1.50 μg·L^-1。二氯乙酸浓度未超过GB 5479-2006《生活饮用水卫生标准》。夏季HAAs浓度相对较高，温度与HAAs浓度呈正相关，pH与HAAs浓度呈负相关。石河子市饮用水中HAAs不会对人体健康造成潜在危害。

关键词: 消毒副产物, 一氯乙酸, 二氯乙酸, 健康风险

Abstract: This study aimed to evaluate the potential hazard of haloacetic acid in drinking water of Shihezi City to human health. From July 2017 to June 2018, the raw water, finish water, and pipe network water of a water plant in Shihezi City were sampled. GC-μECD detection and analysis were used to measure the concentration of haloacetic acid. Changes in the concentration of haloacetic acid in different processes and season effluents were analyzed. The health risks of drinking water exposure were also evaluated. Results show that the average concentrations of monochloroacetic acid, dichloroacetic acid, monobromoacetic acid, dibromoacetic acid, tribromoacetic acid, bromodichloroacetic acid, chlorodibromochloroacetic acid, and bromochloroacetic acid in the finish water of a water plant in Shihezi City were ND, 0.21, 0.45, 5.90, 2.00, 1.10, 4.50, and 1.50 μg·L^-1, respectively. The concentrations of DCAA did not exceed the requirement of GB 5749-2006. HAAs were relatively high in summer, temperature was positively correlated with HAAs, and pH was negatively correlated with HAA concentration. The concentration of HAAs in drinking water in Shihezi does not cause potential harm to human health.

Key words: haloacetic acid, monochloroacetic acid, dichloroacetic acid, health risk

中图分类号:

蔡婧, 童延斌, 鲁建江, 马武威, 常启刚. 石河子市饮用水中卤乙酸污染水平及健康风险评估[J]. 生态与农村环境学报, 2019, 35(11): 1490-1496.

CAI Jing, TONG Yan-bin, LU Jian-jiang, MA Wu-wei, CHANG Qi-gang. Risk Assessment and Pollution Level of Haloacetic Acid in Drinking Water in Shihezi City[J]. Journal of Ecology and Rural Environment, 2019, 35(11): 1490-1496.

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