在水中快速和可视检测二乙二
Jiaben Zhong1, Hangyan Zhang1, Yina Cai1
1School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China.
一种新的色度测定方法可以快速地在现场检测二乙二 (DCAN),这是一个常见的消毒副产品. 这种低成本,仪器独立的方法可以在低ng/mL水平上检测DCAN.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 水质监测 水质监测
背景情况:
- 二乙 (DCAN) 是一种在水化过程中形成的普遍且有毒的消毒副产品 (DBP).
- 现有的DCAN检测方法复杂,需要专门的仪器,不适合现场应用.
- 准确和可访问的DCAN监测对于确保公共卫生和环境安全至关重要.
研究的目的:
- 开发一种简单,快速,经济高效的色度测试方法,用于在水中现场检测DCAN.
- 确定DCAN和相关化合物的检测极限和开发的测定特异性.
- 为DCAN量化提供现有仪器方法的实用替代方案.
主要方法:
- 使用DCAN作为复合剂,在水样中与铜性物种形成复合物.
- 铜-DCAN复合物用形式提取,然后用dithizone进行可视化.
- 使用视觉和光检测方法来量化DCAN度.
主要成果:
- 颜值测定测试实现了DCAN的视觉检测极限为20 ng/mL.
- 光量化使得DCAN在低至8.75 ng/mL的度下能够被检测出来.
- 该方法证明了DCAN和其他乙二 (HANs) 的选择性,其他DBPs的干扰最小,高达200 ng/mL.
结论:
- 开发的色度测定方法为DCAN检测提供了一种快速,低成本和仪器独立的方法.
- 该方法适用于DCAN的现场监测,解决当前分析技术的局限性.
- 该试验能够检测到各种HAN,其特异性增强了其对水质评估的实用性.
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