ABSTRACT
Objective:To fast detect hypotensive drugs illegally added to the flower buds of Panax notoginseng. Methods:A laser Raman spectrometer was used to detect several chemical drugs added to the flower buds of Panax notoginseng, and the spectrum was qualitatively analyzed. Results:Raman spectroscopy could detect chemical antihypertensive drugs added to the flower buds of Panax notoginseng, and the test results were in accordance with those of the traditional method. Conclusion: Raman spectroscopy can be used for the determination of illegal additives in the flower buds of Panax notoginseng.
ABSTRACT
OBJECTIVE: To establish a Raman spectroscopy method for the determination of tiopronin injection. METHODS: Based on Raman scattering theory, the light intensity of the laser Raman peak is in proportional to the concentration of tiopronin samples in aqueous solution. A quantitative method for determination of tiopronin injection using Raman spectroscopy was established by selecting the Raman peak of tiopronin sulfhydryl group (S-H[2580 cm-1]) as quantitative peak. RESULTS: The calibration curve was linear over the range of 10 - 100 mg · mL-1 (r = 0.9999, n =6), and the average recovery was 101.98% with RSD of 2.09% (n = 9). CONCLUSION: The method is convenient and rapid. It is expected to be used in the quality control of tiopronin injection. Copyright 2012 by the Chinese Pharmaceutical Association.