摘要
采用偏硼酸锂熔样，试液通过离子交换树脂（Ｄｏｗｅｘ５０Ｗ－ｘ８），用浓度为２ｍｏｌ／Ｌ的盐酸可将主量元素（铁、铝、钙、硅、钛、钠）和微量元素（镍、锰、铬、钒）洗脱，用浓度为６ｍｏｌ／Ｌ的盐酸定量洗脱钪、钇和镧系元素。用萃取剂：磷酸二（２－乙基己基）酯溶液能将钪选择定量地萃取到有机相中，钇和镧系元素仍留在水相中，用ＩＣＰ－ＡＥＳ法测定钪，光谱干扰都可排除，检出限１０ｎｇ／ｇ，回收率９８％。
Li 2B 4O 7 was used for the fusion of the sample.The sample solution
was passed through the ion exchanger DOWEX 50W X8 and the main elements,such as Fe,Al,
Ca,Si,Ti,Na as well as the minor ones Ni,Mn,Cr,V were removed by elution with 2mol/L HCl, Sc,
Y and the lanthanides were quantitatively obtained by subseqnent elution with 6mol/L HCl
.Using di(2 ethylhexyl)phosphoric acid as extractant ,scandium could be selectively and
quantitatively extracted into the organic phase,while yttrium and the lanthanides remained in
the aqueous phase. In this way all spectral interferences for the inductively coupled plasma
atomic emission spectrometric determination of scandium were eliminated and a very low
detection limit,at the 10ng/g level ,was achieved with a recovery of 93%.
出处
《分析试验室》
CAS
CSCD
1999年第2期83-85,共3页
Chinese Journal of Analysis Laboratory
基金
山西师范大学校基金
