Method for detecting multiple antiseptics in cosmetics
A method of determination and technology of cosmetics, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of turbidity, inapplicability, and poor specificity of the solution to be tested, and achieve simple and convenient operation, short analysis time, and high efficiency Effect
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[0031] The content of 14 kinds of preservatives in cosmetics is detected by the method of the present invention.
[0032] Instrument: Agilent 6890N gas chromatograph equipped with flame ionization detector (FID), TB-114 analytical balance, Dima ProElut TPC solid phase extraction column.
[0033] Standards: Benzoic Acid, Sorbic Acid, Dehydroacetic Acid, Methylparaben, Benzylparaben, Benzyl Alcohol, Phenoxyethanol, O-Phenylphenol, Triclosan, Triclocarban, Methylparaben Chlorisothiazolinone, bronopol, chlorphenesin and iodopropynyl butyl carbamate (both purity>99.0%); tetrahydrofuran, methanol, ethyl acetate (chromatographically pure).
[0034] Cosmetics to be tested: Moisturizer.
[0035] Pre-treatment process: Weigh 2.0g of moisturizer sample, put it in a separatory funnel, add 50mL of tetrahydrofuran, add 10mL of saturated NaCl solution, acidify 1mL of HCl(1+1) solution, fully shake and extract, stand still, and separate layers ; After the stratification is complete, release...
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