摘要
以EDTA-2Na络合掩蔽钨及共存杂质,采用磷钼黄分光光度法测定仲钨酸铵工艺流程中溶液的磷含量,测定结果显示,方法的加标回收率在102.4%~109.6%之间,相对标准偏差为0.50%~2.22%,检出限为5.38μg/mL。该方法已用于仲钨酸铵生产工艺过程中磷的监控和检验。
EDTA is used to complex and mask wolfram and coexisting impurities,and phosphorus content in solutions from ammonium paratungstate circuit is determined by phosphomolybdenum yellow spectrophotometric method.The analytical results show that the recovery is 102.4%～109.6%,and relative standard deviation 0.50%~2.22%,the detection limit is 5.38 μg/mL.This method has been applied in the phosphorus monitoring and examination in the process of paratungstate production.
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2010年第2期64-66,共3页
Rare Metals and Cemented Carbides
