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本文采用褶合光谱分析法不经分离直接测定了盐酸苯海拉明的含量，具有操作简便，省时，结果准确等优点，适于制剂的质量控制。本实验平均回收率为100．00％，RSD为0．08％。
In this paper, the direct determination of the content of diphenhydramine hydrochloride by the method of convolution spectrometry without separation has the advantages of simple operation, time saving and accurate results, and is suitable for the quality control of the preparation. The average recovery of this experiment was 100.00% with a RSD of 0.08%.