کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9743767 | 1491199 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An environmentally friendly (“green”) reversed-phase liquid chromatography method for UV filters determination in cosmetics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
A green procedure based on reversed-phase liquid chromatography with gradient elution using environmentally friendly solvents, has been developed to determine 18 UV filters, which are most used in Europe nowadays as sunscreen in cosmetics. Samples were weighed and dissolved in ethanol. Two aliquots were taken from the initial sample solution to prepare two solutions, so analytes could be determined chromatographically in two groups (the most fat-soluble and the easily water-soluble ones) using a different gradient elution program for each group. The mobile phases were based on mixtures of ethanol and 1% acetic acid or 1% sodium acetate buffer pH 4.75. The same C18 stationary phase column was employed in both cases. The chromatographic variables such as mobile phase composition, pH, flow rate and temperature were studied and selected in order to achieve total separation of all the peaks involved. The proposed method has been validated by the analysis of 27 commercial sunscreen samples (with different cosmetic forms: cream, lipstick, makeup, sun water, lotion, milk) and two synthetic samples. The method allows any mixture of the 18 UV filters studied to be separated with a good resolution and determined without interference from cosmetic matrices, moreover it does not require the use of highly toxic organic solvents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 537, Issues 1â2, 29 April 2005, Pages 15-24
Journal: Analytica Chimica Acta - Volume 537, Issues 1â2, 29 April 2005, Pages 15-24
نویسندگان
A. Salvador, A. Chisvert,