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以溴甲酚绿甲醇溶液为显色剂,用比色法测定北豆根总碱制剂中的生物碱含量。该法简便、快速、准确,为北豆根总碱制剂的质量控制提供了一个简便而适用的方法。
The bromocresol green methanol solution was used as the color reagent to determine the alkaloid content in the total alkaloid preparations of Rhododendron chinense by colorimetry. The method is simple, rapid and accurate, and provides a simple and applicable method for the quality control of the total alkaloid preparations of Rhizoma.