How to identify Zihe cars
A technology of zihe and samples, which is applied in the field of identifying zihe, can solve the problems of large influencing factors, complicated experimental operation, and long analysis time, and achieve the effects of avoiding interference from human factors, simple experimental operation, and broad application prospects
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[0029] Preparation of Reference Substance Solution Take Zihe, extract with organic solvent to obtain Zihe extract, absorb the Zihe extract, spot it on the silica gel G thin-layer plate, use toluene-acetone=3:2V / V As a developing agent, take it out, dry it, cover it with a glass plate, and leave a width for color development; after color development, scrape the glass plate at the corresponding position of the blue stripe spot in the color development area to cover the undeveloped part, dissolve it In absolute ethanol, ultrasonically extract, filter, centrifuge, and evaporate the filtrate to obtain the reference substance; the reference substance is dissolved in mobile phase to obtain the reference substance solution;
[0030] Preparation of the test solution: take the test sample, extract it with an organic solvent, obtain the test sample extract, add mobile phase to dissolve, and prepare the test solution;
[0031] Determination method Precisely draw 10 μl each of the referenc...
Embodiment 1
[0040] Example 1 Using the method of the present invention to identify Zihe car
[0041] Preparation of the reference substance: according to the method of Test Example 1, the extract of Zihecaria was prepared, the extract of Zihecaria was absorbed, and strips were spotted on the silica gel G thin-layer plate. : 2) as developing agent. Take it out, dry it, and cover it with a glass plate, leaving a width of about 1cm for color development. After the color develops, scratch the glass plate to cover the undeveloped part at the corresponding position of the blue stripe spot in the color developed area. Dissolve it in absolute ethanol, ultrasonically extract for 10 minutes, filter, centrifuge (4000r / h) for 10 minutes, and evaporate the filtrate to obtain the reference substance.
[0042] Mass spectrometry analysis of the reference substance Mass spectrometry conditions: ionization method: ESI, ionization voltage: 4.5 kV, ion source temperature: 250°C, separator temperature: 260°...
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