分光光度法测定改性后磷石膏中水溶性P_2O_5  

Determination of soluble P_2O_5 in modified phosphogypsum by spectrophotometric method

作　　者：白有仙[1] 朱云勤[1] 

机构地区：[1]贵州大学理学院化学系,贵州贵阳550025

出　　处：《磷肥与复肥》2008年第3期63-64,共2页Phosphate & Compound Fertilizer

摘　　要：采用钼酸铵分光光度法测定改性磷石膏中水溶性P2O5含量。对测定方法进行条件实验,得出了优化的实验参数和线性关系良好的工作曲线。用本法测定改性磷石膏中水溶性P2O5,n=9,RSD为0.84%～2.12%,加标回收率在97.80%～99.00%。The ammonium molybdate spectrophotometric method is used to determinate the contents of watersoluble P2O5 in modified phosphogypsum. With the condition experiments of the method, the optimization experiment parameters and a working curve with good linear relation are obtained. The method has been applied to determination of water-soluble P2O5 content in modified phosphogypsum, RSD （ n=9 ） is within 0.84%-2.12%, the adding standard recovery of the samples is between 97.80% and 99.00% .

关 键 词：分光光度法 改性磷石膏 水溶性P2O5测定 

分 类 号：TQ177.3[化学工程—硅酸盐工业]