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利用卡氏滴定法测定了板蓝根冲剂中的水分，平均回收率为９９．５８％，变异系数为０．９４％，并与甲苯法作了比较。
The water content of Banlangen granules was determined by the method of Karl ’s titration. The average recovery rate was 99.58%, the coefficient of variation was 0.94%, and compared with the toluene method.