Determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence

Nowadays there are no official in vitro methods to determine TiO2, ZnO or other inorganic elements in sunscreen cosmetics. The objective of this work is to determine the concentration of several inorganic elements in sunscreen composition, without sample preparation, by employing a portable Energy D...

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Detalles Bibliográficos
Autores principales:	Melquiades, Fábio, Appoloni, Carlos R., Lonni, Audrey, Ferreira, Diego D.D., Lopes, Fábio
Formato:	Articulo Comunicacion
Lenguaje:	Inglés
Publicado:	2010
Materias:	Farmacia energy dispersive X-ray fluorescence; Inorganic elements; sunscreen Farmacología Productos químicos inorgánicos
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/8016 http://www.latamjpharm.org/resumenes/29/6/LAJOP_29_6_2_1.pdf
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-8016
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Farmacia energy dispersive X-ray fluorescence; Inorganic elements; sunscreen Farmacología Productos químicos inorgánicos
spellingShingle	Farmacia energy dispersive X-ray fluorescence; Inorganic elements; sunscreen Farmacología Productos químicos inorgánicos Melquiades, Fábio Appoloni, Carlos R. Lonni, Audrey Ferreira, Diego D.D. Lopes, Fábio Determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence
topic_facet	Farmacia energy dispersive X-ray fluorescence; Inorganic elements; sunscreen Farmacología Productos químicos inorgánicos
description	Nowadays there are no official in vitro methods to determine TiO2, ZnO or other inorganic elements in sunscreen cosmetics. The objective of this work is to determine the concentration of several inorganic elements in sunscreen composition, without sample preparation, by employing a portable Energy Dispersive X-Ray Fluorescence (EDXRF) device. Particularly in the case of TiO2 and ZnO, the aim is also to estimate their Sun Protection Factor (SPF) due to the physical protection barrier. A sensitivity curve for the determination of inorganic elements in sunscreen, with atomic numbers ranging from 19 to 35, is presented. Fifteen commercial samples with different SPF from different brands were analyzed. It was determined TiO2 and ZnO concentrations with their respective SPF values, as well as to detect the presence of K, Br, Sr and Ce in the sunscreen samples by identifying and quantifying chemical elements that had not been mentioned in the formulations.
format	Articulo Comunicacion
author	Melquiades, Fábio Appoloni, Carlos R. Lonni, Audrey Ferreira, Diego D.D. Lopes, Fábio
author_facet	Melquiades, Fábio Appoloni, Carlos R. Lonni, Audrey Ferreira, Diego D.D. Lopes, Fábio
author_sort	Melquiades, Fábio
title	Determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence
title_short	Determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence
title_full	Determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence
title_fullStr	Determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence
title_full_unstemmed	Determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence
title_sort	determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence
publishDate	2010
url	http://sedici.unlp.edu.ar/handle/10915/8016 http://www.latamjpharm.org/resumenes/29/6/LAJOP_29_6_2_1.pdf
work_keys_str_mv	AT melquiadesfabio determinationofinorganicelementsinsunscreenbyusingenergydispersivexrayfluorescence AT appolonicarlosr determinationofinorganicelementsinsunscreenbyusingenergydispersivexrayfluorescence AT lonniaudrey determinationofinorganicelementsinsunscreenbyusingenergydispersivexrayfluorescence AT ferreiradiegodd determinationofinorganicelementsinsunscreenbyusingenergydispersivexrayfluorescence AT lopesfabio determinationofinorganicelementsinsunscreenbyusingenergydispersivexrayfluorescence
bdutipo_str	Repositorios
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Determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence

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