沉淀滴定法测定磷酸二氢钾中的磷  

Determination of Phosphorus in KH_2PO_4 by Precipitation Titration

作　　者：王志[1] 郭斌[1] 梁树权[2] 

机构地区：[1]河北轻化工学院,石家庄050018 [2]中国科学院化学研究所

出　　处：《分析试验室》1992年第6期18-20,共3页Chinese Journal of Analysis Laboratory

摘　　要：本文报道了硝酸铅沉淀滴定测定磷酸二氢钾中磷的分析方法。本方法精密、准确、简单易行。沉淀物用化学分析法确定为PbCl_2[Pb_3(Po_1)2]2·H_2O,并提供了X射线衍射实验数据作证。此种磷酸氯化铅复盐尚属首次发现,此前未见诸文献。This article describes an analytical method for the determination of phosphorus inKH_2PO_4 by preeipitation titration with Pb(NO_3)_2 as the titrant. This method is precise, accurate and easy to operate. The composition of the precipitate is detesmined as PbCl_2[Pb_3(PO_4)_2]_2·H_2O by chemical analyses and confirmed by the X-ray diffraction pattern. This kind of double salt of lead has not yet been reported before.

关 键 词：沉淀滴定法 磷酸二氢钾 磷 

分 类 号：O613.62[理学—无机化学]