钒铁中磷的分析方法改进  

The Improvement of Analytical Method of Phosphorus in Ferrovanadium

作　　者：冯向琴[1,2] 周兰花[1] 

机构地区：[1]攀枝花学院资源与环境工程学院,四川攀枝花617000 [2]攀枝花钒钛检测实验室,四川攀枝花617000

出　　处：《福建分析测试》2016年第1期51-54,共4页Fujian Analysis & Testing

摘　　要：本文针对现有国标分析方法 GB/T 8704.7-2009钼蓝光度法测定钒铁中的磷含量方法存在操作繁琐、流程长、重现性差,准确度低、成本较高等问题进行了改进。通过采用硫酸加硝酸溶样,用亚硫酸钠还原钒为统一的4价,采用对应试液作参比消除钒的干扰等手段,使钒铁中磷的含量的测定方法变得操作简便、快速、准确、成本下降。The molybdate blue spectrophotometric determination of phosphorus in Ferrovanadium of GB/T 8704.7-2009 was studied. Some improvement works were done on the problem of complicated operation,long flow,poor reproducibility,low accuracy,high cost. In the experiment,Ferrovanadium was dissolved by sulfuric acid and nitric acid and vanadium in it reduced into 4 valence by sodium sulfite. And the corresponding solution as a reference was used to eliminate the interference of vanadium. The result is found that the method for the determination of the content of phosphorus in Ferrovanadium is simpler,faster,more accurate,lower cost.

关 键 词：钒铁 磷 分析方法 改进 

分 类 号：O657.3[理学—分析化学]