镀锌灰中氯化锌和氧化锌的分离测定

Separation and Determination of Zinc Chloride and Zinc Oxide in the Galvaniser's Ash

本文推荐８％乙酰丙酮─８％乙醇溶液作为镀锌灰中ＺｎＣｌ２和ＺｎＯ的选择性溶剂。在室温条件下电磁搅拌浸取分离（３０ｍｉｎ）后，即可用银量法测定浸出液中的ＺｎＣｌ２和用ＥＤＴＡ法测定其总锌量，差减而得ＺｎＯ的含量。方法简便、快速、干扰少，用于镀锌灰中ＺｎＣｌ２和ＺｎＯ的分离测定，获得了比较满意的结果。

Acetylacetone-ethylalcohol solution has been recommended as a new selective dissolvent for separation ZnCl_2 and ZnO in the galvaniser's ash in this paper. After leaching 30 min by electro-magnetic stirring at room temperature with 100ml 8% acetylacetone-8% ethylalcohol solution ZnCl_2 is determined by argentometric titration, the total Zn amount is determined by EDTA titration and the ZnO is given by difference between the two determinations. the method has been used to determine ZnCl_2 and ZnO in the galvaniser's ash with satisfactory results.