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Arsenic Monitoring in Water by Colorimetry Using an Optimized Leucomalachite Green Method
Arsenic contamination of drinking water is a global concern. Standard laboratory methods that are commonly used for arsenic detection in water, such as atomic absorption spectroscopy and mass spectroscopy, are not suitable for mass monitoring purposes. Autonomous microfluidic detection systems combi...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359460/ https://www.ncbi.nlm.nih.gov/pubmed/30669352 http://dx.doi.org/10.3390/molecules24020339 |
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author | Lace, Annija Ryan, David Bowkett, Mark Cleary, John |
author_facet | Lace, Annija Ryan, David Bowkett, Mark Cleary, John |
author_sort | Lace, Annija |
collection | PubMed |
description | Arsenic contamination of drinking water is a global concern. Standard laboratory methods that are commonly used for arsenic detection in water, such as atomic absorption spectroscopy and mass spectroscopy, are not suitable for mass monitoring purposes. Autonomous microfluidic detection systems combined with a suitable colorimetric reagent could provide an alternative to standard methods. Moreover, microfluidic detection systems would enable rapid and cost efficient in situ monitoring of water sources without the requirement of laborious sampling. The aim of this study is to optimize a colorimetric method based on leucomalachite green dye for integration into a microfluidic detection system. The colorimetric method is based on the reaction of arsenic (III) with potassium iodate in acid medium to liberate iodine, which oxidizes leucomalachite green to malachite green. A rapid colour development was observed after the addition of the dye. Beer’s law was obeyed in the range between 0.07–3 µg mL(−1). The detection limit and quantitation limit were found to be 0.19 and 0.64 µg mL(−1), respectively. |
format | Online Article Text |
id | pubmed-6359460 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63594602019-02-06 Arsenic Monitoring in Water by Colorimetry Using an Optimized Leucomalachite Green Method Lace, Annija Ryan, David Bowkett, Mark Cleary, John Molecules Article Arsenic contamination of drinking water is a global concern. Standard laboratory methods that are commonly used for arsenic detection in water, such as atomic absorption spectroscopy and mass spectroscopy, are not suitable for mass monitoring purposes. Autonomous microfluidic detection systems combined with a suitable colorimetric reagent could provide an alternative to standard methods. Moreover, microfluidic detection systems would enable rapid and cost efficient in situ monitoring of water sources without the requirement of laborious sampling. The aim of this study is to optimize a colorimetric method based on leucomalachite green dye for integration into a microfluidic detection system. The colorimetric method is based on the reaction of arsenic (III) with potassium iodate in acid medium to liberate iodine, which oxidizes leucomalachite green to malachite green. A rapid colour development was observed after the addition of the dye. Beer’s law was obeyed in the range between 0.07–3 µg mL(−1). The detection limit and quantitation limit were found to be 0.19 and 0.64 µg mL(−1), respectively. MDPI 2019-01-18 /pmc/articles/PMC6359460/ /pubmed/30669352 http://dx.doi.org/10.3390/molecules24020339 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lace, Annija Ryan, David Bowkett, Mark Cleary, John Arsenic Monitoring in Water by Colorimetry Using an Optimized Leucomalachite Green Method |
title | Arsenic Monitoring in Water by Colorimetry Using an Optimized Leucomalachite Green Method |
title_full | Arsenic Monitoring in Water by Colorimetry Using an Optimized Leucomalachite Green Method |
title_fullStr | Arsenic Monitoring in Water by Colorimetry Using an Optimized Leucomalachite Green Method |
title_full_unstemmed | Arsenic Monitoring in Water by Colorimetry Using an Optimized Leucomalachite Green Method |
title_short | Arsenic Monitoring in Water by Colorimetry Using an Optimized Leucomalachite Green Method |
title_sort | arsenic monitoring in water by colorimetry using an optimized leucomalachite green method |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359460/ https://www.ncbi.nlm.nih.gov/pubmed/30669352 http://dx.doi.org/10.3390/molecules24020339 |
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