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如何实现饮用水中DBP分析的适当火?

Jiafeng Ren¹, Mengmeng Tang¹, Leyi Wang¹

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

|February 9, 2024

概括

优化灭剂,如甲酸,对于精确的消毒副产品 (DBP) 分析在水中至关重要. 这项研究确定了停止反应而不会降解DBP的最佳条件,为可靠的DBP测量推了 Askorbic 酸.

科学领域:

环境化学环境化学
分析化学分析化学
分析水质分析水质

背景情况:

火对于停止消毒和防止水样中残留的持续反应至关重要.
由于持续的反应或DBP降解,不充分或过度火可能导致不准确的消毒副产品 (DBP) 分析.
选择适当的灭剂和条件对于同时消毒终止和DBP保存至关重要.

研究的目的:

为了确定与常见灭剂的二阶段反应动力学:亚斯科布酸,硫酸盐和硫酸盐.
为了确定最佳的火时间和摩尔比率 (MRs) 以有效消毒终止,同时保持DBPs.
评估不同火剂和条件对不同类型的DBP的破坏性影响.

主要方法:

用亚酸,硫酸和硫酸对反应的动态分析.
确定最佳的灭剂与的摩尔比率 (MRs) 和灭时间.
对DBP降解的评估,包括总有机素 (TOX),异质DBP,烯醇,二/酸和二甲/二甲.

主要成果:

优化的MR为1.05对酸,1.10对硫酸和0.75对硫酸.
对TOX和性DBP的破坏性影响按照下列顺序进行:酸<硫酸<硫酸.
建议在化水样本中进行适当的火,以尽量减少DBP降解.

结论:

火剂,剂量和时间的选择显著影响DBP分析的准确性.
亚酸对DBPs具有最少的破坏性作用,使其成为首选的火剂.
优化火方案对于可靠量化水中的消毒副产品至关重要.

关键词:

适当的火方式消毒消毒消毒消毒消毒副产品消毒的副产品饮用水饮用水饮用水消火消火消火消火

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