复合肥中钾含量的快速测定  

Rapid analysis of K_2O content in compound fertilizers

作　　者：张芳[1] 张永江[1] 李红军[1] 

机构地区：[1]中原大化集团有限责任公司,河南濮阳457004

出　　处：《磷肥与复肥》2003年第5期63-64,共2页Phosphate & Compound Fertilizer

摘　　要：为解决中控快速分析复混肥中K2O含量,研究试验用火焰光度法测定K2O,介绍该法原理、测定方法。结果表明:该法比国标四苯基合硼酸钾重量法用时少3h,仅需0.5h,精密度<0.5%,回收率98.7%～102.1%,可满足中控分析要求。In order to rapidly measure K2O content in production of compound fertilizer, an experiment by flame photometric analysis was done. The working principle and the measuring method are introduced. The results show that the measuring time is decreased by 3 hours (only 0.5 hour needed) compared with gravimetric method of sodium tetraphenylboron, precision less than 0.5%, recovery rate of 98.7% ～102.1%, and the requirement of inprocess control could be met.

关 键 词：复混肥 火焰光度法 测定 钾 中控分析 

分 类 号：TQ440.7[化学工程—化学肥料工业]