络合滴定法测定鞣酸鱼肝油软膏中的鞣酸含量
Determination of tannin in tannin-cod liver oil ointment by complexometric titration
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摘要: 目的 :制订鞣酸鱼肝油软膏中鞣酸含量的质控标准。 方法 :采用锌标准液测定鞣酸,乙二胺四乙酸钠回滴过量锌离子的络合滴定法对鞣酸作含量测定。 结果 :鞣酸鱼肝油软膏中鞣酸含量平均为4.77%,RSD= 2.41%;方法回收率为:102.41,RSD=2.52%。 结论 :该方法简便、快速、准确;可控制该制剂质量。Abstract: Objections : To establish the quality standards of the tannin in tannin-cod liver oil ointment. Methods :The content of the tannin was determined by compleximetry. Results : The equal content of the tannin in ointment was 4.77% ,RSD was 2.41% . Conclusion :These methods are specific and accurate.They can be used as the quality control method for the tannin in tannin-cod liver oil ointment.
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Key words:
- tannin-cod liver oil ointment /
- tannin /
- complexometric titration
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