Smartphone-Based Colorimetric Detection of Chromium (VI) by Maleic Acid-Functionalized Gold Nanoparticles

Because of the significant environmental pollution produced by human activities, there is an ongoing need to develop transportable, simple, and reliable techniques for determining trace contaminants on the spot. This work reported a colorimetric detection method for aqueous Cr(VI) sensing by maleic...

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Autores principales:	Ahmed Mohamed, Xuemeng Li, Chengfei Li, Xuegang Li, Chao Yuan, Hassan Barakat
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Chromium colorimetric measurement smartphone-based detection gold nanoparticles Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/e6ab29698e3a40818d6eb9c6eb7bd5f2
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spelling	oai:doaj.org-article:e6ab29698e3a40818d6eb9c6eb7bd5f22021-11-25T16:39:57ZSmartphone-Based Colorimetric Detection of Chromium (VI) by Maleic Acid-Functionalized Gold Nanoparticles10.3390/app1122108942076-3417https://doaj.org/article/e6ab29698e3a40818d6eb9c6eb7bd5f22021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10894https://doaj.org/toc/2076-3417Because of the significant environmental pollution produced by human activities, there is an ongoing need to develop transportable, simple, and reliable techniques for determining trace contaminants on the spot. This work reported a colorimetric detection method for aqueous Cr(VI) sensing by maleic acid-functionalized gold nanoparticles with high sensitivity and selectivity. The wine-red color of the probe solution can change to gray even in the presence of 1.0 µg L<sup>−1</sup> of aqueous Cr(VI). Moreover, with the assistance of a smartphone installed with a commercially available color scan application software, its concentration of could be readily quantified on the spot without the help of UV-Vis spectrometer. The detection limit could reach as low as 0.1 µg L<sup>−1</sup> with linear range from 0.2 to 2.0 µg L<sup>−1</sup>. Most importantly, the coefficient variation of the proposed smartphone-based method was equivalent to that of colorimetry, demonstrating the high accuracy of the proposed method for accurate detection of Cr(VI) in resource-constrained countries. Conclusively, with the help of the smartphone, this nanomaterials-based probe demonstrated the potential in the field of environment monitoring for on-site quantitative detection of any pollutants in resource-constrained countries.Ahmed MohamedXuemeng LiChengfei LiXuegang LiChao YuanHassan BarakatMDPI AGarticleChromiumcolorimetric measurementsmartphone-based detectiongold nanoparticlesTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10894, p 10894 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chromium colorimetric measurement smartphone-based detection gold nanoparticles Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	Chromium colorimetric measurement smartphone-based detection gold nanoparticles Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Ahmed Mohamed Xuemeng Li Chengfei Li Xuegang Li Chao Yuan Hassan Barakat Smartphone-Based Colorimetric Detection of Chromium (VI) by Maleic Acid-Functionalized Gold Nanoparticles
description	Because of the significant environmental pollution produced by human activities, there is an ongoing need to develop transportable, simple, and reliable techniques for determining trace contaminants on the spot. This work reported a colorimetric detection method for aqueous Cr(VI) sensing by maleic acid-functionalized gold nanoparticles with high sensitivity and selectivity. The wine-red color of the probe solution can change to gray even in the presence of 1.0 µg L<sup>−1</sup> of aqueous Cr(VI). Moreover, with the assistance of a smartphone installed with a commercially available color scan application software, its concentration of could be readily quantified on the spot without the help of UV-Vis spectrometer. The detection limit could reach as low as 0.1 µg L<sup>−1</sup> with linear range from 0.2 to 2.0 µg L<sup>−1</sup>. Most importantly, the coefficient variation of the proposed smartphone-based method was equivalent to that of colorimetry, demonstrating the high accuracy of the proposed method for accurate detection of Cr(VI) in resource-constrained countries. Conclusively, with the help of the smartphone, this nanomaterials-based probe demonstrated the potential in the field of environment monitoring for on-site quantitative detection of any pollutants in resource-constrained countries.
format	article
author	Ahmed Mohamed Xuemeng Li Chengfei Li Xuegang Li Chao Yuan Hassan Barakat
author_facet	Ahmed Mohamed Xuemeng Li Chengfei Li Xuegang Li Chao Yuan Hassan Barakat
author_sort	Ahmed Mohamed
title	Smartphone-Based Colorimetric Detection of Chromium (VI) by Maleic Acid-Functionalized Gold Nanoparticles
title_short	Smartphone-Based Colorimetric Detection of Chromium (VI) by Maleic Acid-Functionalized Gold Nanoparticles
title_full	Smartphone-Based Colorimetric Detection of Chromium (VI) by Maleic Acid-Functionalized Gold Nanoparticles
title_fullStr	Smartphone-Based Colorimetric Detection of Chromium (VI) by Maleic Acid-Functionalized Gold Nanoparticles
title_full_unstemmed	Smartphone-Based Colorimetric Detection of Chromium (VI) by Maleic Acid-Functionalized Gold Nanoparticles
title_sort	smartphone-based colorimetric detection of chromium (vi) by maleic acid-functionalized gold nanoparticles
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e6ab29698e3a40818d6eb9c6eb7bd5f2
work_keys_str_mv	AT ahmedmohamed smartphonebasedcolorimetricdetectionofchromiumvibymaleicacidfunctionalizedgoldnanoparticles AT xuemengli smartphonebasedcolorimetricdetectionofchromiumvibymaleicacidfunctionalizedgoldnanoparticles AT chengfeili smartphonebasedcolorimetricdetectionofchromiumvibymaleicacidfunctionalizedgoldnanoparticles AT xuegangli smartphonebasedcolorimetricdetectionofchromiumvibymaleicacidfunctionalizedgoldnanoparticles AT chaoyuan smartphonebasedcolorimetricdetectionofchromiumvibymaleicacidfunctionalizedgoldnanoparticles AT hassanbarakat smartphonebasedcolorimetricdetectionofchromiumvibymaleicacidfunctionalizedgoldnanoparticles
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Smartphone-Based Colorimetric Detection of Chromium (VI) by Maleic Acid-Functionalized Gold Nanoparticles

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