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优化尺寸排除色谱的彻底验证 - - 对淡水中的天然有机物质进行全有机碳分析

Elien Laforce¹, Karlien Dejaeger^2,3,4, Marjolein Vanoppen^2,3

¹Industrial Catalysis and Adsorption Technology (INCAT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium.

Molecules (Basel, Switzerland)

|May 11, 2024

概括

高性能大小排除色谱与总有机碳检测 (HPSEC-TOC) 提供了一种可靠的方法来分析水中的自然有机物质 (NOM) 分数. 这种经过验证的技术适用于饮用水处理厂的常规监测.

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:

自然有机物 (NOM) 的表征对于了解水质至关重要.
高性能大小排除色谱与总有机碳检测 (HPSEC-TOC) 是NOM分离的常用方法.
在淡水和饮用水中常规分析NOM需要经过验证和有效的方法.

研究的目的:

验证HPSEC-TOC用于水生NOM的常规分析.
评估HPSEC-TOC在饮用水处理厂中的适用性.
为最佳的HPSEC-TOC分析提供程序建议.

主要方法:

淡水和饮用水样本的HPSEC-TOC分析.
通过冷却保存样品 (最多1个小时) 两个星期).
通过酸化 (pH6) 和N2净化去除无机碳.
使用TSK HW-50S列的染色学分离.

主要成果:

通过HPSEC-TOC验证,可在各种水类中进行常规NOM分离.
确定了最佳的样本保存和无机碳去除程序.
该方法显示检测极限为19.0 μgC dm-3,线性高达10,000 μgC dm-3.3.
在常规分析中,相对测量不确定性在3.22%至5.17%之间.

结论:

HPSEC-TOC是一种可靠和高效的工具,用于分析经过处理和未经处理的水中的NOM分数.
该方法适用于饮用水处理的常规应用.
关键的程序考虑确保准确和可重复的结果.

关键词:

染色学分成部分的分化.方法验证方法的验证方法.精确的精确度可以说是精确的.恢复恢复恢复恢复的时间样品的保存样品的保存的真实性真实性.

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