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一种用于水溶液中亚硝酸盐检测的新型快速比色化学计量器——4-(吡咯-1-基)吡啶

A New, Rapid, Colorimetric Chemodosimeter, 4-(Pyrrol-1-yl)pyridine, for Nitrite Detection in Aqueous Solution.

作者信息

Thomas Mallory E, Schmitt Lynn D, Lees Alistair J

机构信息

Department of Chemistry, Binghamton University, Binghamton, New York 13902-6000, United States.

Department of Chemistry, SUNY Cortland, Cortland, New York 13045, United States.

出版信息

ACS Omega. 2024 Aug 20;9(35):37278-37287. doi: 10.1021/acsomega.4c05026. eCollection 2024 Sep 3.

DOI:10.1021/acsomega.4c05026
PMID:39246479
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11375707/
Abstract

With increasing concerns over environmental impact and overall health of both the environment and its people, a need to quantify contaminants is of the utmost importance. Chemosensors with low detection limits and a relative ease of application can address this challenge. Nitrite ions are known to be detrimental to both the environment and human health. A new colorimetric chemodosimeter has been prepared from the homolytic photochemical cleavage of a reaction between pyrrole and pyridine. The product, 4-(pyrrol-1-yl)pyridine, yields a limit of detection of 0.330 (±0.09) ppm for the detection of nitrite in aqueous solution, employing a colorimetric change from yellow to pink. It is also highly selective for nitrite when various competitive anions such as SO , NO , PO , SO , Cl, F, I, Br, AcO, and CN are present in great excess. The molecule's especially high sensitivity to nitrite is apparently the result of a complex supramolecular mechanism, characterized by both dynamic light scattering of the aggregate and the Tyndall effect. Consequently, this new sensor provides a simple, low-cost way to rapidly detect nitrite anions in aqueous solution.

摘要

随着人们对环境影响以及环境与人类整体健康的关注度不断提高，对污染物进行量化的需求至关重要。具有低检测限且应用相对简便的化学传感器能够应对这一挑战。已知亚硝酸根离子对环境和人类健康均有害。通过吡咯与吡啶之间反应的均裂光化学裂解制备了一种新型比色化学剂量计。产物4-(吡咯-1-基)吡啶在水溶液中检测亚硝酸盐时，比色从黄色变为粉红色，检测限为0.330(±0.09)ppm。当存在大量诸如SO 、NO 、PO 、SO 、Cl、F、I、Br、AcO和CN等竞争性阴离子时，它对亚硝酸盐也具有高度选择性。该分子对亚硝酸盐特别高的灵敏度显然是一种复杂超分子机制的结果，其特征在于聚集体的动态光散射和廷德尔效应。因此，这种新型传感器提供了一种简单、低成本的方法来快速检测水溶液中的亚硝酸根阴离子。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/e409c723404b/ao4c05026_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/2bb3e67fe22d/ao4c05026_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/f5316520580d/ao4c05026_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/28d911f23f16/ao4c05026_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/13cdc7c80589/ao4c05026_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/de561aeadae2/ao4c05026_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/a14f4f0596fd/ao4c05026_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/ef76c050f956/ao4c05026_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/04381d4886c3/ao4c05026_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/a577b78ed7fe/ao4c05026_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/e409c723404b/ao4c05026_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/2bb3e67fe22d/ao4c05026_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/f5316520580d/ao4c05026_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/28d911f23f16/ao4c05026_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/13cdc7c80589/ao4c05026_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/de561aeadae2/ao4c05026_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/a14f4f0596fd/ao4c05026_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/ef76c050f956/ao4c05026_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/04381d4886c3/ao4c05026_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/a577b78ed7fe/ao4c05026_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e238/11375707/e409c723404b/ao4c05026_0010.jpg

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