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Optimization of pretreatment process of lip gloss for the determination of lead by flame atomic absorption spectroscopy

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dc.contributor.advisorJanagap, Steve P.
dc.contributor.authorBolivar, Eduardo L., Jr.
dc.contributor.chairFrio, Ma. Angeles
dc.contributor.committeememberMartizano, Jay O.
dc.contributor.committeememberSy Piecco, Kurt Waldo E.
dc.date.accessioned2026-07-06T06:00:22Z
dc.date.issued2013-10
dc.description.abstractThe optimization of the pretreatment process for the analysis of lead in lip gloss using a flame atomic absorption spectrophotometer (FAAS) was proposed in this study. Two variables were tested for this study: volume of nitric acid, HNO3 and volume of hydrogen peroxide, H202. Results of the optimization and statistical analysis revealed that 47.3 mL HNO3 and 2 mL HNO3 were the optimum volumes suited for the digestion of lip gloss in obtaining high analytical results for the lead analysis. Five different samples were randomly purchased from local markets in Iloilo City that may contain high levels of lead due to a report from BFAD that warned people about the use of several lipsticks imported abroad. Lip gloss samples were analyzed using the optimized protocol. The heavy metal content in the lip gloss samples were found to be between 52.0 - 126.3 mg lead/kg of sample. Results show that these were slightly higher than the allowable limits for lead contents in lip gloss set by BFAD and WHO. One-way ANOVA statistics showed that there was a significant difference in the lead contents among the different lip gloss samples.
dc.format.extentx, 50 p.
dc.identifier.citationBolivar, E. L., Jr. (2013). <i>Optimization of pretreatment process of lip gloss for the determination of lead by flame atomic absorption spectroscopy</i> [Undergraduate thesis, University of the Philippines Visayas]. UPV Institutional Repository. https://hdl.handle.net/20.500.14583/713
dc.identifier.urihttps://hdl.handle.net/20.500.14583/713
dc.publisherDepartment of Chemistry, College of Arts and Sciences, University of the Philippines Visayas
dc.subjectLip gloss
dc.subjectLead
dc.subjectFlame Atomic Absorption Spectroscopy (FAAS)
dc.subjectChemical analysis
dc.subjectCosmetic safety
dc.subject.agrovoclead
dc.subject.agrovocatomic absorption spectrometry
dc.subject.agrovocchemical analysis
dc.subject.agrovocquality control
dc.subject.agrovoctoxic substances
dc.subject.lccLG 993.5 2013 C5 B66
dc.subject.sdgSDG 3 - Good health and well-being
dc.subject.sdgSDG 12 - Responsible consumption and production
dc.subject.sdgSDG 9 - Industry, innovation and infrastructure
dc.titleOptimization of pretreatment process of lip gloss for the determination of lead by flame atomic absorption spectroscopy
dc.typeThesis
thesis.degree.departmentCollege of Arts and Sciences
thesis.degree.grantorUniversity of the Philippines Visayas
thesis.degree.levelUndergraduate
thesis.degree.nameBachelor of Science in Chemistry

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