微流体基于纸张的分析装置,具有预度系统,用于使用光探测器测量阳离子表面活性剂
Shengji Zhu1, Takashi Masadome1
1Department of Applied Chemistry, Faculty of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan. masadome@sic.shibaura-it.ac.jp.
Analytical methods : advancing methods and applications
|February 8, 2024
概括
一种新的基于纸的微流体分析装置 (μPAD) 提供了一种低成本的现场方法,用于检测像基硫酸盐 (LAS) 这样的阳离子表面活性剂 (AS). 这种便携式系统可提高环境水源监测的灵敏度.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 废水中的阳性表面活性剂 (AS),特别是基二硫酸盐 (LAS),对环境构成风险.
- 传统的AS检测方法通常是昂贵的,耗时的,并且使用危险的溶剂.
- 需要用于AS监控的简单,敏感和现场分析工具.
研究的目的:
- 开发一个具有成本效益和灵敏的安离子表面活性剂 (AS) 现场测量系统.
- 使用微流体基于纸张的分析装置 (μPAD) 与AS检测的光极集成.
- 为了提高AS检测灵敏度和通过预度步骤的范围.
主要方法:
- 开发了一种μPAD,用于AS预度,其中包含了基托改性过纸.
- 使用一个光极作为光学探测器,用于解AS.
- 在改造纸上吸附AS,然后用性溶液化.
- 在0.1至10μmol dm-3.3的度范围内检测线性基硫酸盐 (LAS).
主要成果:
- 与没有预度的方法相比,使用预度的μPAD表现出更好的灵敏度和更广泛的检测范围.
- 开发的系统能够在环境水样中可靠地检测LAS.
- 该方法显示,水中共存物质的干扰是可以忽略的.
结论:
- PAD提供了一个便携式,具有成本效益和灵敏的解决方案,用于在现场确定AS.
- 这项技术为环境水质评估的传统方法提供了可行的替代方案.
- 开发的μPAD适用于在水龙头和河水等现实世界样本中确定LAS.
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