Inspection for quality control of Longxuejie
A technology for control and detection, dried dragon's blood, which is applied in the field of detection of Chinese herbal medicines and can solve problems such as difficulty in accurately reflecting product quality.
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[0092] Chromatographic conditions and system suitability test Octadecylsilane bonded silica gel was used as filler; glacial acetic acid solution (1→100)-acetonitrile (63:37) was used as mobile phase, and the detection wavelength was 275nm. Column temperature: 30°C. The number of theoretical plates should not be less than 5,000 based on the calculation of the peaks A and B of dragon blood, and the separation degree between peak A and peak B of dragon blood should be greater than 2.0.
[0093] Preparation of Reference Substance Solution Accurately weigh the appropriate amount of reference substances of dragon blood A and dragon blood B which have been dried under reduced pressure by phosphorus pentoxide for 24 hours, add methanol to dissolve and make each 1ml containing dragon blood A 0.18mg, containing dragon blood A mixed solution of 0.04 mg of element B is obtained.
[0094] Preparation of the test solution Take about 0.25g of the powder of this product (passed through a No....
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