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本文采用双波长薄层扫描法对乙肝散中大黄素含量进行测定，在0．1003～0．7021μg范围内与积分面积呈线性关系，回收率为98．32％，RSD为2．95％。此法结果准确，分离度好，操作简便。
In this paper, the emodin content in HBsAg was measured by dual-wavelength thin-layer scanning method. The linear relationship between the emodin content and the integral area was obtained in the range of 0.1003～0.7021μg. The recovery rate was 98.32% and the RSD was 2.95%. This method is accurate, with good separation and easy operation.