Fast detection method and detection reagent kit for metronidazole, and its use in detection of cosmetic and disinfector added with metronidazole
A detection method and technology for metronidazole, which are applied in the direction of analysis by chemical reaction of materials, organic chemistry, material analysis by observing the influence of chemical indicators, etc., can solve the problem that the chromatographic column is easily polluted and the analysis cost is high. , the high price of the instrument, etc., to achieve the effect of high accuracy of test results, obvious test phenomenon, convenience and large liquidity
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Embodiment 1
[0036] Embodiment 1 Xinfu mite cream
[0037] The Xinfufenling of the present embodiment is a cream, and the specification is 15g.
[0038] In this embodiment, whether metronidazole is contained in the Xinfufenling is rapidly detected, and the specific steps are as follows:
[0039] (1) Take 0.5g of Xinfumianling cream and add it into a 10ml disposable syringe, draw 2ml of 3% sulfuric acid solution with the syringe, replace the needle with a 0.45μm organic phase filter, shake vigorously to mix;
[0040] (2) Take 4ml of petroleum ether II and add it to the above-mentioned mixed liquid, shake vigorously to extract, and let stand to separate layers;
[0041] (3) Take the lower layer of acid solution as the test solution and put it in a test tube, add 30 mg of sodium hydroxide solid reagent, and the solution will immediately appear purple, then it can be judged that the present embodiment Xinfufengling contains metronidazole.
Embodiment 2
[0042] Example 2 Yusen Acne Fear Detoxification Acne Essence
[0043] The Yusen Acne and Acne Detoxification Essence of this embodiment is a water preparation with a specification of 30ml.
[0044] In this example, a rapid detection of whether metronidazole is contained in the Yusen Acne Fear Detoxification and Acne Removing Essence is carried out, and the specific steps are as follows:
[0045] (1) Take 3ml of Yusen acne anti-acne detox essence and add it into a 10ml disposable syringe, draw 2ml of 3% sulfuric acid solution with the syringe, replace the needle with a 0.45μm organic phase filter, shake vigorously to mix;
[0046] (2) Take the above-mentioned mixed liquid as the test solution, put it in a test tube, add 30 mg of sodium hydroxide solid reagent, and the solution will immediately appear purple, then it can be judged that the Yusen Acne Fear Detoxification and Acne Removing Essence in this embodiment contains Metronidazole.
Embodiment 3
[0047] Example 3 Gynecological Qianjin Suppository
[0048] The gynecological Qianjin suppository of this embodiment is a disinfectant, with a specification of 6 pieces / box.
[0049] In this embodiment, whether metronidazole is contained in the gynecological Qianjin suppository is rapidly detected, and the specific steps are as follows:
[0050] (1) Take 1 gynecological Qianjin suppository in a test tube, add 3ml of 3% sulfuric acid solution, heat in a water bath until the suppository dissolves, draw the solution into a 10ml disposable syringe, replace the needle with a 0.45μm organic phase filter, shake vigorously to mix uniform;
[0051] (2) Add petroleum ether II 4ml into the above-mentioned mixed liquid, shake vigorously for extraction, and let stand to separate layers;
[0052] (3) Take the lower layer of acid solution as the test solution and put it in a test tube, add 30 mg of sodium hydroxide solid reagent, and the solution will immediately appear purple, indicating ...
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