pH-based colorimetric detection of monofunctional aldehydes in liquid and gas phases

IF 2.1 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Open Chemistry Pub Date : 2024-04-03 DOI:10.1515/chem-2024-0011

Ma. Carmela P. dela Cruz, Voltaire G. Organo

引用次数: 0

Abstract

An ammonium chloride–Congo red (NH4Cl-CR) solution is presented as a potential sensing solution for aldehydes. Monofunctional aldehydes such as formaldehyde, acetaldehyde, benzaldehyde, and isobutyraldehyde caused changes in the pH of the sensing solution, producing a color transition from red-orange to violet to blue. This distinguished them from the other compounds, thereby acting as a qualitative test for the functional group. The NH4Cl-CR solution was also employed in making filter paper-based and silica gel-based sensors for formaldehyde and acetaldehyde vapors. These sensors responded positively towards the aldehyde gases through a color transition from pink to blue. The NH4Cl-CR mixture provides a simple and easy-to-handle reagent for the detection of both liquid and gaseous aldehydes which has potential applications in environmental monitoring.

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基于 pH 值的液相和气相单官能团醛的比色法检测

氯化铵-刚果红（NH4Cl-CR）溶液是一种潜在的醛类传感溶液。甲醛、乙醛、苯甲醛和异丁醛等单官能团醛类物质会导致传感溶液的 pH 值发生变化，从而产生从橘红色到紫色再到蓝色的颜色转变。这将它们与其他化合物区分开来，从而作为官能团的定性检测。NH4Cl-CR 溶液还被用来制作滤纸型和硅胶型甲醛和乙醛蒸气传感器。这些传感器通过从粉红色到蓝色的颜色转变对醛气体做出了积极反应。NH4Cl-CR 混合物为检测液态和气态醛提供了一种简单且易于处理的试剂，在环境监测中具有潜在的应用价值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Open Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

3.80

自引率

4.30%

发文量

审稿时长

6 weeks

期刊介绍： Open Chemistry is a peer-reviewed, open access journal that publishes original research, reviews and short communications in the fields of chemistry in an ongoing way. The central goal is to provide a hub for researchers working across all subjects to present their discoveries, and to be a forum for the discussion of the important issues in the field. The journal is the premier source for cutting edge research in fundamental chemistry and it provides high quality peer review services for its authors across the world. Moreover, it allows for libraries everywhere to avoid subscribing to multiple local publications, and to receive instead all the necessary chemistry research from a single source available to the entire scientific community.