A method for simultaneous determination of 15 banned androgens in cosmetics
A technology for androgen and cosmetics, applied in the field of simultaneous determination of 15 prohibited androgen in cosmetics, can solve the problems of skin atrophy and thinning, pigmentation, etc., and achieve the effect of good separation, accurate method and high signal response intensity
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[0044] 1. Instruments, reagents and materials
[0045] ACQUITY ultra-high performance liquid chromatography, WatersXEVOTQ triple quadrupole mass spectrometer, MassLynx data processing system (Waters, USA); Milli-Q ultrapure water device (Millipore, USA); CR21G high-speed refrigerated centrifuge (Hitachi, Japan) ; KQ-600 ultrasonic cleaner (Kunshan Ultrasonic Instrument Co., Ltd., Jiangsu Province); MS2 vortex oscillator (German IKA company); AB204-S electronic balance (US METTLERTOLEDO company); N-EVP112 nitrogen blowing instrument ( U.S. Organomation Associates Inc); 0.22 μm microporous membrane (U.S. Pall company); OasisHLB (60mg, 3mL) solid-phase extraction column (U.S. Waters company); Methanol, acetonitrile and formic acid are chromatographically pure reagents (U.S. Fisher company).
[0046] The structural formulas and relevant information of the 15 prohibited androgen substances are shown in Table 3.
[0047] Using methanol as a solvent, prepare standard stock solutions...
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