Fast detection method of nitrazepam doped in medicine and health care food
A technology of health food and determination method, which is applied in the direction of material analysis through observation of the influence of chemical indicators, and analysis through chemical reaction of materials, etc., which can solve the problems of large influence on separation effect, wrong judgment, expensive instruments, etc. problem, to achieve the effect of wide application range, high accuracy and strong specificity
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Embodiment 1
[0052] Tianxingjian Wanan Capsules (capsules, the marked dosage is 2 capsules each time, the test results of this product contain 0.567mg of nitrazepam per capsule by high performance liquid chromatography-mass spectrometry)
[0053] Take one grain of content, put it in a 10ml sample tube, add 3ml of hydrochloric acid solution, vortex for 3 minutes; add 5 drops of 0.1mol / L sodium nitrite solution to the hydrochloric acid solution, vortex for 1 minute; add dropwise 0.2 Vortex 1ml of mol / L urea for 2 minutes; add 5 drops of alkaline β-naphthol test solution dropwise, and the solution will gradually appear red flocculent precipitate within 3 minutes, so it can be judged that the sample contains illegally added nitrazepam.
Embodiment 2
[0055] Naolibao pills (pills, the marked dosage is 4 pills each time, each pill (vegetarian pill) weighs about 0.2g, the test results of high-performance liquid chromatography-mass spectrometry This product does not contain nitrazepam, simulated addition of nitrazepam for control product 0.25mg)
[0056] Take 5 pills of Naolibao pills, about 1.0g, add 0.25mg of nitrazepam reference substance, put them in a 10ml sample tube, add 2ml of hydrochloric acid solution, vortex for 5 minutes; add 0.05mol / L nitrous acid dropwise to the hydrochloric acid solution 6 drops of sodium solution, vortexed for 2 minutes; 0.1mol / L urea 1.5ml was added dropwise and vortexed for 4 minutes; 5 drops of alkaline β-naphthol test solution was added dropwise, and the solution gradually appeared red flocculent precipitate within 3 minutes, thus It can be judged that the sample contains illegally added nitrazepam.
Embodiment 3
[0058] Anshen Bunao Liquid (oral solution, the labeled dosage is 10ml each time, the test result of high performance liquid chromatography-mass spectrometry does not contain nitrazepam, and 0.20mg of nitrazepam reference substance is simulated)
[0059] Take 5ml of Anshenbunao liquid, add 0.20mg of nitrazepam reference substance, put it in a 10ml sample tube, add 4ml of hydrochloric acid solution, vortex for 4 minutes; add 2 drops of 0.2mol / L sodium nitrite solution to the hydrochloric acid solution , vortexed for 1 minute; 0.3mol / L urea 0.5ml was added dropwise and vortexed for 3 minutes; 5 drops of alkaline β-naphthol test solution was added dropwise, and the solution gradually appeared red flocculent precipitate within 3 minutes, so it can be judged that Contains illegally added nitrazepam.
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