摘要
本文介绍的方法是,在0.04～0.12mol/L盐酸介质中,在50％其他稀土存在下,钇与偶氮溴膦-PB形成红色络合物,在波长700nm处测量吸光度。合金中轻重稀土、锆、镁等离子的干扰,采用柠檬酸—草酸联合掩蔽消除之。钇量在5～40μg/25ml之内符合比尔定律,其回收率在98～104％之间。方法简便、快速,易于操作。
Yttrium is determined by spectrophotometry with bromophosphonazo-PB in the presence of other rare earths.The interference of other rare earths and zirconium is eliminated with citric acid-oxalic acid.The complex formed has a maxium absorption at 700nm. Beer's law is obeyed over the range of 5-40ugY/25ml and recovery is 98-104% .
出处
《冶金分析》
CAS
CSCD
北大核心
1990年第5期19-21,共3页
Metallurgical Analysis
