摘要
以Ｌａ（ＯＨ）３为共沉淀剂，使高纯Ｎａ２ＷＯ４中痕量Ｂｅ、Ｓｃ、Ｙｂ、Ｚｎ与基体相分离并富集，然后用ＩＣＰ－ＡＥＳ法测定。实验表明，当ｐＨ为１２时，用６ｍＬ１％Ｌａ溶液进行两次共沉淀分离，能使上述元素定量分离回收。回收率为９２．７％～１０２．５％，相对标准偏差为２．８％～５．９％。
ICP AES has been developed for the simultaneous determination of trace beryllium, scandium, ytterbium and zinc in high purity sodium tungstate Coprecipitation of these elements with lathanum hydroxide was to separate the mfrom the matrix and for concentration It was found that the seelements could be satisfactory recovered after two times of coprecipitation with 6 mL lathanum solution (1%) at pH 12 0 The recoveries of them are in the range of 92 7%～102 5%, and RSD in 2 8%～5 9%。
出处
《分析测试技术与仪器》
CAS
1998年第2期116-119,共4页
Analysis and Testing Technology and Instruments
关键词
共沉淀
ICP
AES
钨酸钠分析
铍
镱
钪
锌
coprecipitation\ separation and concentration\ ICP AES\ sodium tungstate beryllium scandium\ ytterbium\ zinc
