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一个具有成本效益的手持设备和智能手机应用程序:简化了在水中精确和快速的现场 (VI) 检测

Swapnil Meshram¹, Rajdip Bandyopadhyaya¹

¹Chemical Engineering Department, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.

|March 4, 2025

概括

一个新的手持设备使用色素探针准确检测水中的微量 (VI) 含量. 这种具有成本效益的便携式传感器可以在现场快速,选择性和可靠地监测六价.

科学领域:

环境科学环境科学
分析化学分析化学
传感器技术传感器技术

背景情况:

由于干扰离子,在低度 (50ppb) 时准确地在现场检测 (VI) (Cr) 具有挑战性.
现有的方法可能缺乏便携性或速度,以快速地在现场监测水质.

研究的目的:

开发一种手持设备,用于快速,准确和便携式检测水中的微量CrVI.
为了克服现场Cr (VI) 分析中常见的干扰问题.

主要方法:

使用1,5-二甲基化物 (DPC) 作为用于检测CrVI的染色体探针.
开发了一种具有3D打印容器,绿色LED光传感器和微控制器的装置,用于吸收度测量 (450-600 nm).
优化了试剂稳定性和复杂形成时间,以实现高效的现场测量.

主要成果:

该设备实现了线性检测范围为10ppb至2.5ppmCr (VI),低检测极限 (LOD) 为6.8ppb,定量极限 (LOQ) 为20.5ppb.
即使在各种常见离子度高的情况下,也对Cr (VI) 具有很高的选择性,只有Fe3+的干扰是最小的.
根据UV-Vis光谱光度和ICP-AES验证的结果,在不同的环境条件下显示可靠的性能.

结论:

开发的手持设备提供了一个经济高效的,便携式和快速的解决方案,用于在水中现场监测Cr (VI).
该设备超出了世卫组织在饮用水中的Cr (VI) 的允许限值,并提供了选择性和一致的测量.
它的特性,包括基于应用程序的数据传输和长时间的试剂有效性,使其适用于现场应用.

关键词:

测色仪检测检测的颜色测量检测.在现场的传感器.光学方法光学方法选择性的选择性废水是废水,废水就是废水.

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