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1·The content of total tannin was chosen as the assessment index, and the EDTA complexometric titration was used for the measurement.

方法：采用正交实验法对老鹳草总鞣质的提取工艺进行优选，以总鞣质含量为指标，用EDTA络合法滴定。

2·Objective:To explore the affecting factors of benzalkonium bromide content determined value by two phase complexometric titration method.

前言： 目的：探讨双相络和滴定法测定新洁尔灭含量的影响因素。

3·The acidity control problem of de-masking reaction in complexometric titration was presented theoretically in the paper, and simple calculation method was also provided.

从理论上对配位滴定时解蔽反应的酸度问题进行了探讨，并提出了简便的计算方法。

4·Methods Qualitative analysis of Sanguisorba Officinalis and Arnebia euchroma(Royle)Johnst were identified by TLC and the content of Zinc in Galamine was determined by complexometric titration.

方法对主要成分地榆和紫草作薄层鉴别；对主药炉甘石采用络合滴定法测定锌含量。