Method for screening chemical risk substances such as chloramphenicol antibiotics in toiletries
A technology for toiletries and chloramphenicol, which is applied in the field of screening chemical risk substances of chloramphenicol antibiotics, can solve the problems of lag in the supervision of chemical risk substances, insufficient preventive ability, and unreported detection methods, and achieves accelerated availability. The effect 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
[0049] A method for detecting chemical risk substances in toiletries, comprising the steps of:
[0050] After the pretreatment steps of extraction, centrifugation, purification, filtration and other pretreatment steps, the sample solution obtained is analyzed and detected by high-pressure liquid chromatography-quadrupole-electrostatic field orbitrap high-resolution mass spectrometry; high-pressure liquid chromatography-quadrupole- In electrostatic field orbitrap high-resolution mass spectrometry analysis and detection, the chromatographic separation conditions are as follows:
[0051] Column: Agilent ZORBAX XDB-C 8 , length 150mm, inner diameter 2.1mm, particle size 3.5μm; column temperature: 25℃; flow rate: 0.35mL min -1 ;Injection volume: 10μL, see Table 1 for mobile phase and gradient elution program:
[0052] Table 1 Chromatographic mobile phase and gradient elution program
[0053]
[0054] In the high-pressure liquid chromatography-quadrupole-electrostatic field or...
Embodiment 2
[0062] 1. Instruments and reagents
[0063] 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).
[0064] 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).
[0065] Prepare 500-1000μg mL respectively -1 The standard st...
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