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消毒副产品及其对源水中化化过程中溶解的黑碳的细胞毒性贡献

Haoran Chen¹, Chuze Chen¹, Xiating Zhao¹

¹State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.

The Science of the total environment

|April 30, 2024

概括

燃烧草是中国源水中溶解黑碳 (DBC) 的主要来源. 消毒DBC形成有毒的副产品,显著增加水处理风险.

科学领域:

环境化学环境化学
水处理技术水处理技术
有机地化学有机地化学

背景情况:

溶解黑碳 (DBC) 是水源中溶解有机物 (DOM) 的重要组成部分.
在水消毒过程中DBC的起源和转化还不清楚.
DBC源于化石燃料或生物质的不完全燃烧.

研究的目的:

调查中国源水中DBC的来源.
在化过程中分析DBC的消毒副产品 (DBPs) 的形成和毒性.
评估DBC衍生DBPs对整体水毒性的贡献.

主要方法:

在不同季节,从中国东部的17个源水中采集DBC样本.
稳定同位素分析 (δ13C) 来确定DBC的来源.
模拟的化和胺试验.
使用染色学和质谱学分析异形和芳香的DBPs.
使用中国仓鼠卵巢细胞进行细胞毒性测定.

主要成果:

根据 δ13C 分析,被确定草燃烧是DBC的主要来源.
与化相比,DBC的化产生了较高水平的和芳香DBPs.
来自DBC化的DBPs表现出比DOM的细胞毒性高4倍的细胞毒性.
酸和酸是分别在化和化过程中的主要细胞毒性DBPs.
在源水DOM消毒中,DBC衍生的DBPs占总细胞毒性的11.7%.

结论:

在饮用水处理过程中,DBC显著促进了有毒DBP的形成.
从DBC形成的DBPs的细胞毒性很大,需要注意.
了解DBC的起源及其DBP的形成对于有效的水安全管理至关重要.

关键词:

在CHO细胞毒性.() 化 () 化 () 是一种化物.消毒副产品消毒的副产品溶解的黑色碳是什么?源水是源水中的水.

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