Colorimetric determination of trace orthophosphate in water by using C18-functionalized silica coated magnetite

Abstract In this study, we customized magnetic sorbents by functionalizing silica coated magnetite with octadecyl(C18)silane (Fe3O4@SiO2@C18). This sorbent was intended for the determination of trace orthophosphate (o-PO4 3−) in unpolluted freshwater samples. The o-PO4 3− was transformed to phosphom...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Vanpaseuth Phouthavong, Supone Manakasettharn, Duangkamon Viboonratanasri, Siriwit Buajarern, Panida Prompinit, Kamonthip Sereenonchai
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c5e5eab72d8d4fb3959d0d1b0d480dfe
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:c5e5eab72d8d4fb3959d0d1b0d480dfe
record_format	dspace
spelling	oai:doaj.org-article:c5e5eab72d8d4fb3959d0d1b0d480dfe2021-12-05T12:11:38ZColorimetric determination of trace orthophosphate in water by using C18-functionalized silica coated magnetite10.1038/s41598-021-02516-42045-2322https://doaj.org/article/c5e5eab72d8d4fb3959d0d1b0d480dfe2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02516-4https://doaj.org/toc/2045-2322Abstract In this study, we customized magnetic sorbents by functionalizing silica coated magnetite with octadecyl(C18)silane (Fe3O4@SiO2@C18). This sorbent was intended for the determination of trace orthophosphate (o-PO4 3−) in unpolluted freshwater samples. The o-PO4 3− was transformed to phosphomolybdenum blue (PMB), a known polyoxometalate ion. Then the PMB were coupled with cetyl trimethyl ammonium bromide (CTAB), cationic surfactant, in order to hydrophobically bound with the Fe3O4@SiO2@C18 particles through dispersive magnetic solid-phase extraction (d-MSPE) as part of sample preconcentration. The PMB–CTAB–magnetic particles are simply separated from the aqueous solution by the external magnet. The acidified ethanol 0.5 mL was used as PMB-CTAB eluent to produce an intense blue solution, which the absorbance was measured using a UV–Vis spectrophotometer at 800 nm. The proposed method (employing 2 mg of Fe3O4@SiO2@C18) yielded an enhancement factor of 32 with a linear range of 1.0–30.0 µg P L−1. Precision at 6.0 µg P L−1 and 25.0 µg P L−1 were 3.70 and 2.49% (RSD, n = 6) respectively. The lower detection limit of 0.3 µg P L−1 and quantification limit of 1.0 µg P L−1 allowed trace levels analysis of o-PO4 3− in samples. The reliability and accuracy of the proposed method were confirmed by using a certified reference material. Our method offers highly sensitive detection of o-PO4 3− with simple procedures that can be operated at room temperature and short analysis time.Vanpaseuth PhouthavongSupone ManakasettharnDuangkamon ViboonratanasriSiriwit BuajarernPanida PrompinitKamonthip SereenonchaiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Vanpaseuth Phouthavong Supone Manakasettharn Duangkamon Viboonratanasri Siriwit Buajarern Panida Prompinit Kamonthip Sereenonchai Colorimetric determination of trace orthophosphate in water by using C18-functionalized silica coated magnetite
description	Abstract In this study, we customized magnetic sorbents by functionalizing silica coated magnetite with octadecyl(C18)silane (Fe3O4@SiO2@C18). This sorbent was intended for the determination of trace orthophosphate (o-PO4 3−) in unpolluted freshwater samples. The o-PO4 3− was transformed to phosphomolybdenum blue (PMB), a known polyoxometalate ion. Then the PMB were coupled with cetyl trimethyl ammonium bromide (CTAB), cationic surfactant, in order to hydrophobically bound with the Fe3O4@SiO2@C18 particles through dispersive magnetic solid-phase extraction (d-MSPE) as part of sample preconcentration. The PMB–CTAB–magnetic particles are simply separated from the aqueous solution by the external magnet. The acidified ethanol 0.5 mL was used as PMB-CTAB eluent to produce an intense blue solution, which the absorbance was measured using a UV–Vis spectrophotometer at 800 nm. The proposed method (employing 2 mg of Fe3O4@SiO2@C18) yielded an enhancement factor of 32 with a linear range of 1.0–30.0 µg P L−1. Precision at 6.0 µg P L−1 and 25.0 µg P L−1 were 3.70 and 2.49% (RSD, n = 6) respectively. The lower detection limit of 0.3 µg P L−1 and quantification limit of 1.0 µg P L−1 allowed trace levels analysis of o-PO4 3− in samples. The reliability and accuracy of the proposed method were confirmed by using a certified reference material. Our method offers highly sensitive detection of o-PO4 3− with simple procedures that can be operated at room temperature and short analysis time.
format	article
author	Vanpaseuth Phouthavong Supone Manakasettharn Duangkamon Viboonratanasri Siriwit Buajarern Panida Prompinit Kamonthip Sereenonchai
author_facet	Vanpaseuth Phouthavong Supone Manakasettharn Duangkamon Viboonratanasri Siriwit Buajarern Panida Prompinit Kamonthip Sereenonchai
author_sort	Vanpaseuth Phouthavong
title	Colorimetric determination of trace orthophosphate in water by using C18-functionalized silica coated magnetite
title_short	Colorimetric determination of trace orthophosphate in water by using C18-functionalized silica coated magnetite
title_full	Colorimetric determination of trace orthophosphate in water by using C18-functionalized silica coated magnetite
title_fullStr	Colorimetric determination of trace orthophosphate in water by using C18-functionalized silica coated magnetite
title_full_unstemmed	Colorimetric determination of trace orthophosphate in water by using C18-functionalized silica coated magnetite
title_sort	colorimetric determination of trace orthophosphate in water by using c18-functionalized silica coated magnetite
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c5e5eab72d8d4fb3959d0d1b0d480dfe
work_keys_str_mv	AT vanpaseuthphouthavong colorimetricdeterminationoftraceorthophosphateinwaterbyusingc18functionalizedsilicacoatedmagnetite AT suponemanakasettharn colorimetricdeterminationoftraceorthophosphateinwaterbyusingc18functionalizedsilicacoatedmagnetite AT duangkamonviboonratanasri colorimetricdeterminationoftraceorthophosphateinwaterbyusingc18functionalizedsilicacoatedmagnetite AT siriwitbuajarern colorimetricdeterminationoftraceorthophosphateinwaterbyusingc18functionalizedsilicacoatedmagnetite AT panidaprompinit colorimetricdeterminationoftraceorthophosphateinwaterbyusingc18functionalizedsilicacoatedmagnetite AT kamonthipsereenonchai colorimetricdeterminationoftraceorthophosphateinwaterbyusingc18functionalizedsilicacoatedmagnetite
_version_	1718372159354568704

Colorimetric determination of trace orthophosphate in water by using C18-functionalized silica coated magnetite

Ejemplares similares