摘要
在酸性溶液中磷酸根与钒钼酸铵作用,不受F-、CO32-、SO42-、NO3-、Cl-和NH4+的干扰,生成稳定的黄色配合物,在420nm波长处进行比色,根据磷的量求出磷酸二氢钾的含量,测量结果的相对标准偏差为0.052%。该方法的测定结果与磷钼酸喹啉重量法测定结果基本一致。
In acid solution, being free from F^- ,CO3^2- ,SO4^2- ,NO3^- ,Cl^- and NH4^- intederence, phosphorus reacted with vanadium ammonium molybdate to form stable yellow complexes. The phosphorus content in ferrosilicon ore was determined by spectrometry at 420 nm. Phosphorus content was used to solve for potassium dihydrogen phosphate content, the relative standard deviation was 0.052%. The result correspond with that by the phosphorus molybdic acid quinoline weight method.
出处
《化学分析计量》
CAS
2007年第1期46-47,共2页
Chemical Analysis And Meterage
关键词
分光光度法
磷酸二氢钾
钒钼酸铵
测定
spectrophotometric method, potassium dihydrogen phosphate, vanadium ammonium molybdate, determination
