Method for detection of allergen flavor substances as forbidden and limited substances in cosmetics
A detection method and technology for allergen fragrance, which can be used in measuring devices, instruments, scientific instruments, etc., can solve the problems of long analysis time, low peak separation, and inability to accurately determine the quality, and achieve good recovery, high detection efficiency, The effect of low detection limits
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[0045] 1. Pretreatment method:
[0046] (1) Liquid sample: Accurately weigh 2.0g of the sample into a 10mL stoppered colorimetric tube, accurately add 10mL of acetonitrile and an appropriate amount of sodium chloride (until sodium chloride precipitates), vortex and mix, ultrasonically extract for 15min, pass through 0.22μm Membrane filtration, on the machine.
[0047] (2) Creamy and milky samples: Accurately weigh 2.0g of the sample into a 50mL centrifuge tube, accurately add 10mL of acetonitrile, vortex and mix, ultrasonically extract for 15min, add appropriate amount of sodium chloride (until sodium chloride is precipitated), 9000r / Centrifuge for 10 min, filter through a 0.22 μm filter membrane, put it on the machine, and quantify with the external standard method.
[0048] 2. Chromatographic conditions:
[0049] The chromatographic column is a phenyl column, RP-MS or C18 chromatographic column;
[0050] Mobile phase: A is acetonitrile, B is 0.05% formic acid solution (c...
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