A screening method for glucocorticoid chemical risk substances in toiletries
A technology of corticosteroids and toiletries, applied in scientific instruments, electric vehicle charging technology, climate sustainability, etc., can solve the problems of lagging supervision of chemical risk substances, insufficient prevention ability, unreported detection methods, etc., and achieve accelerated The effects of sustainable and healthy development, promotion of healthy and standardized development, and standardization of market economic rules and business order
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Embodiment 1
[0050] A detection method for glucocorticoid 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: ACQUITY UPLC BEH Shield RP18 column, length 150mm, inner diameter 2.1mm, particle size 1.7μm; column temperature: 40°C; flow rate: 0.4mL min -1 ;Injection volume: 10μL, see Table 1 for mobile phase and gradient elution program:
[0053] Table 1 Chromatographic mobile phase and gradient elution program
[0054]
[0055]
[0056] In the ul...
Embodiment 2
[0064] 1. Instruments and reagents
[0065] 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).
[0066] 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-wall 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).
[0067] Prepare 500-1000μg mL respectively -1 The standard stoc...
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