分光光度法测定氯化稀土、碳酸轻稀土中磷酸根量  

Determinationof Phosphorus Radicle Content in Rare Earth Chloride and Light Rare Earth Carbonate by Phosphorus-antimonate-molybdenum Blue Spectrophotometric

作　　者：高励珍[1,2] 郝茜[1,2] 张术杰[1,2] 

机构地区：[1]稀土冶金及功能材料国家工程研究中心,内蒙古包头014030 [2]包头稀土研究院,内蒙古包头014030

出　　处：《稀土》2016年第1期116-120,共5页Chinese Rare Earths

摘　　要：建立了测定氯化稀土、碳酸轻稀土中磷酸根量的分析方法。进行了选择合适的溶样条件、显色波长及相关试剂加入量等实验,并研究了酸溶二氧化硅对磷酸根测定的影响。通过精密度实验及加标回收试验证明,此方法可以准确测定氯化稀土、碳酸轻稀土中磷酸根量。测定磷酸根含量范围0.0025%-0.10%,RSD为3.25%-5.23%,此方法简单、准确、重复性好,能满足生产测定要求。Phosphorus- antimonate- molybdenum blue spectrophotometric method for determination of phosphate radical content in rare earth chloride and light rare earth carbonate was studied. The samples were dissolved by hydrochloric acid.Wavelength,coloration time and amount of different reagents were investigated. Effect of acid soluble silica on color reation was examined. The credibility of the method was valuated by determining precision and standard recovery rate recovery rate of the method. Recovery of the method is 95. 00 % - 110. 00 %,RSD 6. 00 %.

关 键 词：氯化稀土 碳酸轻稀土 磷酸根 锑酸钼蓝络合物 分光光度法 

分 类 号：O657.32[理学—分析化学]