Thomas, M.E.; Schmitt, L.D.; Lees, A.J. A New, Rapid, Colorimetric Chemodosimeter, 4(pyrrol-1-Yl)pyridine, for Nitrite Detection in Aqueous Solution. Preprints2023, 2023120412. https://doi.org/10.20944/preprints202312.0412.v1
APA Style
Thomas, M.E., Schmitt, L.D., & Lees, A.J. (2023). A New, Rapid, Colorimetric Chemodosimeter, 4(pyrrol-1-Yl)pyridine, for Nitrite Detection in Aqueous Solution. Preprints. https://doi.org/10.20944/preprints202312.0412.v1
Chicago/Turabian Style
Thomas, M.E., Lynn D. Schmitt and Alistair J. Lees. 2023 "A New, Rapid, Colorimetric Chemodosimeter, 4(pyrrol-1-Yl)pyridine, for Nitrite Detection in Aqueous Solution" Preprints. https://doi.org/10.20944/preprints202312.0412.v1
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 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 a homolytic photochemical cleavage of a reaction between pyrrole and pyridine. The product, 4(pyrrol1-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 SO32- , NO3-, PO43-, SO4-2, Cl-, F-, I-, Br-, 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.
Keywords
aggregate; chemodosimeter; limit of detection; nitrite
Subject
Chemistry and Materials Science, Food Chemistry
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
