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- W2000986147 abstract "A new method for the simultaneous determination of parabens including methylparaben, ethylparaben, propylparaben, and butylparaben by high-performance liquid chromatography (HPLC) coupled with chemiluminescence detection was developed. The procedure was based on the chemiluminescent enhancement by parabens of the cerium(IV)–rhodamine 6G system in the strong sulfuric acid medium. The good separation of parabens was carried out with an isocratic elution using a mixture of methanol and water (60:40, v/v) within 8.5 min. Under the optimized conditions, a linear working range extends three orders of magnitude with the relative standard deviations of intra- and inter-day precision below 4.5%, and the detection limits were 1.9 × 10−9, 2.7 × 10−9, 3.9 × 10−9, and 5.3 × 10−9 g ml−1 for methylparaben, ethylparaben, propylparaben, and butylparaben, respectively. The chemiluminescence reaction was well compatible with the mobile phase of high-performance liquid chromatography. The proposed method has been successfully applied to the assay of parabens in wash-off cosmetic products and foods with the minimal sample preparation." @default.
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- W2000986147 date "1984-01-01" @default.
- W2000986147 modified "2023-09-24" @default.
- W2000986147 title "Quantitative gas and thin-layer chromatographic determination of methylparaben in pharmaceutical dosage forms" @default.
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- W2000986147 doi "https://doi.org/10.1016/s0021-9673(01)96158-8" @default.
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