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在以为基础的消毒过程中,从城市尘埃中直接产生DBP

Lei Xu¹, Shian Song¹, Nigel J D Graham²

¹Key Laboratory of Drinking Water Science and Technology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

|November 19, 2023

概括

城市灰尘与消毒剂发生反应,形成有害的消毒副产品 (DBPs). 这项研究揭示了大量受监管和未知的有毒DBPs,突出了环境和健康风险.

科学领域:

环境化学环境化学
公共卫生公共卫生
分析化学分析化学

背景情况:

基于的消毒剂,如二酸盐,广泛用于卫生.
在COVID-19大流行期间,消毒剂的使用增加,需要了解它们与环境的相互作用.
城市灰尘对消毒副产品 (DBPs) 的形成的影响尚不清楚.

研究的目的:

为了研究室内和室外城市尘埃的特性.
为了评估消毒剂和城市灰尘之间的相互作用.
识别和量化形成的消毒副产品 (DBPs).

主要方法:

从各种室内和室外地点收集和分析灰尘.
在尘埃样本中测量有机碳含量和溶解有机碳.
使用分析技术量化监管DBP (THM,HAA).使用分析技术.
使用气体染色学四极飞行时间质谱法 (GC-qTOF-MS) 识别出未知的化DBPs.

主要成果:

室内尘埃显示有机碳含量高 (6.14%) 和溶解有机碳 (4.17 mg/g).
检测到THM (57.78102.80μg/g) 和HAA (119.18285.14μg/g) 的显著度.
共有68种,89种和87种类型的化DBPs被确定,包括毒性比受监管的毒性更高的化合物.

结论:

城市灰尘是化消毒过程中产生消毒副产品 (DBPs) 的重要来源.
已知和未知的有毒DBPs的形成对生态系统和人类健康构成潜在风险.
需要进一步的研究来评估这些DBP的全部影响,并制定缓解策略.

关键词:

城市灰尘的城市灰尘.在DBPs中,DBPs是指数据库的数据库.消毒消毒消毒消毒天然有机物质是天然的有机物质.非目标分析非目标分析

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