本文提出了吐根浸膏制剂中生物碱含量的直接测定法.吐根浸膏制剂不需经过分离,在酸性条件下直接用四苯硼钠溶液沉淀,过量的四苯硼钠以季銨盐溶液回滴定,方法简单、迅速且较为准确.平均回收率为99-100.1％,重现性较好.方法的平均偏差为±0.55％;标准偏差为±0.69％.制剂中存在的杂质对测定并不干扰. In this paper, a direct determination of the content of alkaloids in the extract of Ipomoea officinalis is proposed.The extract of Ipomoea batatas need not be separated and precipitated directly with sodium tetraphenylborate under acidic conditions, The titration of the solution was simple, rapid and accurate with an average recovery of 99-100.1% and good reproducibility. The average deviation of the method was ± 0.55% with a standard deviation of ± 0.69%. The impurities present in the formulation were assayed Does not interfere.