Analytical methodologies for atomic spectrometric determination of metallic oxides in UV sunscreen creams

Analytical methodologies for atomic spectrometric determination of metallic oxides in UV sunscreen creams

In this study, methodologies for determining titanium oxide, zinc oxide and iron oxide are proposed and assayed in commercial sunscreen products. The proposed methodology for TiO 2 determination in sunscreens is based on a microwave-assisted treatment for digesting the organic components in a closed...

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Bibliographic Details
Published in:Journal of pharmaceutical and biomedical analysis Vol. 22; no. 2; pp. 301 - 306
Main Authors: Salvador, A., Pascual-Martı́, M.C., Adell, J.R., Requeni, A., March, J.G.
Format: Journal Article
Language:English
Published: Amsterdam Elsevier B.V 01-03-2000
Elsevier Science
Subjects:
Analysis
Biological and medical sciences
Creams
Emulsion
FAAS
Ferric Compounds - analysis
General pharmacology
ICP-AES
Iron
Medical sciences
Microwave-assisted digestion
Pharmacology. Drug treatments
Sensitivity and Specificity
Spectrophotometry, Atomic - methods
Sunscreening Agents - chemistry
Sunscreens
Titanium
Titanium - analysis
Ultraviolet Rays
Zinc
Zinc Oxide - analysis
ICP-AES
Sunscreens
Emulsion
Titanium
Iron
Creams
FAAS
Zinc
Microwave-assisted digestion
Iron oxide
Emulsification
Cream
Metal Oxides
Inductive coupling plasma spectrometry
Flame spectrometry
Emission spectrometry
Analysis method
Dosage form
Zinc oxide
Sunscreen product
Titanium oxide
Quantitative analysis
Atomic absorption spectrometry
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Summary:In this study, methodologies for determining titanium oxide, zinc oxide and iron oxide are proposed and assayed in commercial sunscreen products. The proposed methodology for TiO 2 determination in sunscreens is based on a microwave-assisted treatment for digesting the organic components in a closed teflon reactor in presence of HNO 3 and HCl. Titanium is determined by inductive coupled plasma emission spectrometry (ICP-AES). The proposed methodologies for measuring ZnO and Fe 2O 3 are based on a sample emulsification in water with a non ionic tensioactive and IBMK, followed by Zn and Fe determination by flame atomic absorption spectrometry (FAAS). The methodologies allow a precise and accurate determination of metallic oxides in UV sunscreen creams, where the sample treatment is less time-consuming than in the classic methods. To our knowledge this is the first study focused to the determination of metallic oxides in commercial sunscreen products.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0731-7085
1873-264X
DOI:10.1016/S0731-7085(99)00286-1