安定试样用氧瓶燃烧法分解，使其中所含氯转化为Ｃｌ－，燃烧产物用５％ＮａＯＨ溶液吸收，再在酸性条件下与Ａｇ＋标准溶液定量反应，剩余的Ａｇ＋量用原子吸收法测定，求得试样中安定的含量．经测定其回收率为９９．９７％．结果与药典规定的方法一致． The stable sample was decomposed by the oxygen flask combustion method, the chlorine contained therein was converted into Cl-, the combustion products were absorbed by 5% NaOH solution, and quantitatively reacted with the Ag + standard solution under acidic conditions. The remaining Ag + amount was determined by atomic absorption spectrometry , Obtained in the stability of the sample content. The measured recovery was 99.97%. The results are consistent with the method prescribed by the Pharmacopoeia.