Method for screening chemical risk substances such as nitrofuran antibiotics in toiletries
A technology of nitrofuran and cleaning products, which is applied in the field of screening of chemical risk substances of nitrofuran antibiotics, can solve the problems of unreported detection methods, insufficient prevention ability, lagging behind the supervision of chemical risk substances, etc. 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 method for detecting chemical risk substances of nitrofuran antibiotics 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: Waters ACQUITY UPLC HSS Phenyl, length 100mm, inner diameter 2.1mm, particle size 1.8μm; column temperature: 30°C; flow rate: 0.4mL min -1 ;Injection volume: 5μL, 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 spect...
Embodiment 2
[0065] 1. Instruments and reagents
[0066] 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).
[0067] 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).
[0068] Prepare 500-1000μg mL respectively -1 The standard stoc...
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