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本文采用香草醛——硫酸比色法测定北芪精中黄芪甲甙的含量,测定波长544±1nm,其浓度范围在50~420μg 符合比尔定律,回收率为100.41%,RSD 为1.71%。
In this paper, vanillin-sulfuric acid colorimetric method was used to determine the content of Astragaloside A in Amur II. The determination wavelength was 544±1nm, and the concentration range was 50-420μg. It accorded with Beer’s law. The recovery rate was 100.41% and the RSD was 1.71%.