13 research outputs found
Determination of methylparaben from cosmetic products by ultra performance liquid chromatography
Get PDFA new method for the determination of methylparaben by ultra-performance liquid chromatography (UPLC) was developed. Methylparaben is often used as preservative, alone or in combination with other parabens, being added to cosmetic products, pharmaceutical products and foods to avoid microbial contamination. Due to its widespread use and potential risk to human health, assessing human exposure to this compound is of interest. A good determination and quantification of methylparaben was developed with a gradient elution using a mixture of methanol and water (60:40, v/v) within 1.455 min. Under optimized conditions, the linear working range extends over two orders of magnitude with relative standard deviations of intra- and inter-day precision below 2.3 %, and a detection limit of 0.02 ng μL-1 for methylparaben. The proposed method was successfully applied to the assay of methylparaben in cosmetic products with minimal sample preparation
JSCS–3865 Original scientific paper Determination of methylparaben from cosmetic products by
No full textultra performance liquid chromatograph
Using CLEM to investigate the distribution of nano-sized antimicrobial agents within an EVOH matrix
No full textLethal in vitro effects of optimized chitosan nanoparticles against protoscoleces of Echinococcus granulosus
No full textChitosan Nanoparticle for Loading and Release of Nitrogen, Potassium, and Phosphorus Nutrients
No full textEffect of CaCO3/HCl pretreatment on the surface modification of chitin gel beads via graft copolymerization of 2-hydroxy ethyl methacrylate and 4-vinylpyridine
No full textPreparation, assessment, and comparison of α-chitin nano-fiber films with different surface charges
No full textAssessment of nicotine for second hand smoke exposure in some public places in Romania by UPLC-MS
No full textNatural fillers as reinforcement for closed-molded polyurethane foam plaques: Mechanical, morphological, and thermal properties
No full textEnhanced extracellular chitinase production in <em>Pseudomonas fluorescens</em>: biotechnological implications
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