A screening method for progesterone chemical risk substances in toiletries
A technology for cleaning products and progesterone, which is applied in the field of screening of progesterone chemical risk substances, can solve the problems of unreported detection methods, lagging supervision of chemical risk substances, and insufficient prevention capabilities, so as to speed up sustainable and healthy development, Effects of standardizing market economic rules and operating order, promoting healthy and standardized development
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Embodiment 1
[0050] A method for detecting progesterone chemical risk substances in toiletries, comprising the steps of:
[0051] After the pretreatment steps of extraction, centrifugation, purification, filtration and other pretreatment steps, the sample solution obtained by ultra-high pressure liquid chromatography-quadrupole-electrostatic field orbitrap high-resolution mass spectrometry analysis and detection; ultra-high pressure liquid chromatography-quadrupole In rod-electrostatic field orbitrap high-resolution mass spectrometry analysis and detection, the chromatographic separation conditions are as follows:
[0052] Chromatographic column: HSS cyano column, length 50mm, inner diameter 2.1mm, particle size 1.8μm; column temperature: 38°C; flow rate: 0.4mLmin -1 ;Injection volume: 10μL, see Table 1 and Table 2 for mobile phase and gradient elution program:
[0053] Table 1 Chromatographic mobile phase and gradient elution program in positive ion mass spectrometry mode
[0054]
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Embodiment 2
[0066] 1. Instruments and reagents
[0067] Dionex UltiMate 3000 fast high-performance liquid chromatography system (Thermo Fisher, USA); QExactive Focus quadrupole-electrostatic field orbitrap high-resolution mass spectrometer (Thermo Fisher, USA); Milli-Q ultrapure water instrument (Millipore, USA); Vortex-Genie 2 vortex oscillator (Scientific Industries, USA).
[0068] Methanol, acetonitrile (chromatographically pure, American Thermo Fisher Company); ammonium hydroxide, formic acid (chromatographically pure, American DimaTechnology Company); laboratory water is deionized water. Carbon eighteen, N-propyl ethylenediamine and graphitized carbon black (Germany Macherey-Nagel company); Multi-walled carbon nanotubes (Germany Miltenyi Biotec GmbH company); Anhydrous magnesium sulfate, sodium chloride (Guangzhou Xilong Chemical Industry limited liability company); 0.22 μm microporous membrane (Pall Corporation, USA).
[0069] Prepare 500-1000μg mL respectively -1 The standard st...
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