Graphene/fluorescein dye-based sensor for detecting As(III) in drinking water

Abstract A complex of reduced graphene oxide (rGO) and fluorescein (FL) dye nanoparticles of size between 50 and 100 nm has been prepared and its sensing performance for detection of As(III) in drinking water has been reported. When As(III) binds to the rGO–FL nanoparticles the relative quenching of...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Madhu D. Sharma, Sadhana S. Rayalu, Spas D. Kolev, Reddithota J. Krupadam
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8712f4d87e3a46c3b7854bfd027dc4d1
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:8712f4d87e3a46c3b7854bfd027dc4d1
record_format	dspace
spelling	oai:doaj.org-article:8712f4d87e3a46c3b7854bfd027dc4d12021-12-02T19:02:27ZGraphene/fluorescein dye-based sensor for detecting As(III) in drinking water10.1038/s41598-021-96968-32045-2322https://doaj.org/article/8712f4d87e3a46c3b7854bfd027dc4d12021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96968-3https://doaj.org/toc/2045-2322Abstract A complex of reduced graphene oxide (rGO) and fluorescein (FL) dye nanoparticles of size between 50 and 100 nm has been prepared and its sensing performance for detection of As(III) in drinking water has been reported. When As(III) binds to the rGO–FL nanoparticles the relative quenching of fluorescence was increased with increase in As(III) concentration thus provide two linear calibration ranges (0–4.0 mmol L−1 and 4.0–10 mmol L−1). The fluorescence quenching mechanism was investigated by using time-resolved fluorescence spectroscopy and molecular modeling. The detection limit of this sensor has been determined as equal to 0.96 µg L−1 which is about 10 times lower than the WHO stipulated standard for As(III) in drinking water (10 µg L−1). The analytical performance and potential application of the nanosensor was compared to commercial field kits used in arsenic monitoring. The sensor proposed in this study is fast, sensitive and accurate for detection of As(III) in drinking water and environmental samples.Madhu D. SharmaSadhana S. RayaluSpas D. KolevReddithota J. KrupadamNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Madhu D. Sharma Sadhana S. Rayalu Spas D. Kolev Reddithota J. Krupadam Graphene/fluorescein dye-based sensor for detecting As(III) in drinking water
description	Abstract A complex of reduced graphene oxide (rGO) and fluorescein (FL) dye nanoparticles of size between 50 and 100 nm has been prepared and its sensing performance for detection of As(III) in drinking water has been reported. When As(III) binds to the rGO–FL nanoparticles the relative quenching of fluorescence was increased with increase in As(III) concentration thus provide two linear calibration ranges (0–4.0 mmol L−1 and 4.0–10 mmol L−1). The fluorescence quenching mechanism was investigated by using time-resolved fluorescence spectroscopy and molecular modeling. The detection limit of this sensor has been determined as equal to 0.96 µg L−1 which is about 10 times lower than the WHO stipulated standard for As(III) in drinking water (10 µg L−1). The analytical performance and potential application of the nanosensor was compared to commercial field kits used in arsenic monitoring. The sensor proposed in this study is fast, sensitive and accurate for detection of As(III) in drinking water and environmental samples.
format	article
author	Madhu D. Sharma Sadhana S. Rayalu Spas D. Kolev Reddithota J. Krupadam
author_facet	Madhu D. Sharma Sadhana S. Rayalu Spas D. Kolev Reddithota J. Krupadam
author_sort	Madhu D. Sharma
title	Graphene/fluorescein dye-based sensor for detecting As(III) in drinking water
title_short	Graphene/fluorescein dye-based sensor for detecting As(III) in drinking water
title_full	Graphene/fluorescein dye-based sensor for detecting As(III) in drinking water
title_fullStr	Graphene/fluorescein dye-based sensor for detecting As(III) in drinking water
title_full_unstemmed	Graphene/fluorescein dye-based sensor for detecting As(III) in drinking water
title_sort	graphene/fluorescein dye-based sensor for detecting as(iii) in drinking water
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8712f4d87e3a46c3b7854bfd027dc4d1
work_keys_str_mv	AT madhudsharma graphenefluoresceindyebasedsensorfordetectingasiiiindrinkingwater AT sadhanasrayalu graphenefluoresceindyebasedsensorfordetectingasiiiindrinkingwater AT spasdkolev graphenefluoresceindyebasedsensorfordetectingasiiiindrinkingwater AT reddithotajkrupadam graphenefluoresceindyebasedsensorfordetectingasiiiindrinkingwater
_version_	1718377279088754688

Graphene/fluorescein dye-based sensor for detecting As(III) in drinking water

Ejemplares similares