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dc.date.accessioned 2010-09-27T13:18:09Z
dc.date.available 2010-09-27T03:00:00Z
dc.date.issued 2010 es
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/8016
dc.description.abstract 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. es
dc.format.extent 1000-1003 es
dc.language en es
dc.subject energy dispersive X-ray fluorescence; Inorganic elements; sunscreen es
dc.subject Farmacología es
dc.subject Productos químicos inorgánicos es
dc.title Determination of inorganic elements in sunscreen by using energy dispersive x-ray fluorescence es
dc.type Articulo es
sedici.identifier.uri http://www.latamjpharm.org/resumenes/29/6/LAJOP_29_6_2_1.pdf es
sedici.creator.person Melquiades, Fábio es
sedici.creator.person Appoloni, Carlos R. es
sedici.creator.person Lonni, Audrey es
sedici.creator.person Ferreira, Diego D.D. es
sedici.creator.person Lopes, Fábio es
sedici.subject.materias Farmacia es
sedici.description.fulltext false es
mods.originInfo.place Colegio de Farmacéuticos de la Provincia de Buenos Aires es
sedici.subtype Comunicacion es
sedici2003.identifier ARG-FARM-ART-0000001503 es
sedici.relation.journalTitle Latin American Journal of Pharmacy es
sedici.relation.journalVolumeAndIssue vol. 29, no. 6 es


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