A method for detecting the content of Guanxinshutong capsules with one test and multiple evaluations
A detection method and a technique for coronary heart relaxation, which can be used in measuring devices, instruments, scientific instruments, etc., can solve the problems of large consumption of reference substances, complicated and cumbersome operations, and shortage of supply, and achieve a good recovery rate and strong operability. Effect
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Embodiment 1
[0048] Embodiment 1: The present invention establishes a test and multiple evaluation method to measure Guanxinshutong capsule liquid chromatography method
[0049] 1 Instruments and reagents
[0050] 1.1 Instrument
[0051] Agilent 1260 (quaternary pump G1311B; autosampler G1329B; column thermostat G1316A; diode array detector G4212B; LAB open chromatography data workstation); electronic analytical balance (model BP211D, d = 0.01mg, German Sartorius balance limited company); ultrasonic cleaner (model: KQ-250DE, Kunshan Ultrasonic Instrument Co., Ltd.); Agilent ZORBAX Extend-C 18 Chromatography column (250mm×4.6mm, 5μm).
[0052] 1.2 Reagent
[0053] The 24 batches of Guanxin Shutong Capsules were all produced by Shaanxi Buchang Pharmaceutical Co., Ltd., and the batch numbers are shown in Table 2. Methanol was chromatographically pure (Fisher Reagent Company, USA), water was Wahaha Water (Hangzhou Wahaha Group Co., Ltd.), and other reagents were analytically pure.
[0054...
Embodiment 2
[0110] Study on the Influencing Factors of Relative Correction Factor and Relative Retention Time
[0111] Influencing factors such as different brands of chromatographic columns were investigated respectively. Take 10 μl of the reference substance solutions of the five groups under the reference substance preparation item, inject them into high-performance liquid chromatography for analysis, and investigate the influence of the above factors on the correction factor and relative retention time.
[0112] 2.1 Method reproducibility investigation
[0113] The experiment investigated the reproducibility of relative retention time and retention time difference in different chromatographic columns. The chromatographic columns are: Kromasil C 18 Chromatographic column (4.6mm×250mm, 5μm), Diamonsil C 18 Chromatography column (4.6mm×250mm, 5μm), Agilent Extend-C 18 Chromatographic column (4.6mm×250mm, 5μm), the result |RSD| of the retention time difference and the relative retenti...
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