ANALYSIS OF TANTALUM BY ICP-AES INVOLVING TRACE-MATRIX SEPARATION

被引：22

作者：

KRIVAN, V ^{[1
]}

HAUSBECK, R ^{[1
]}

WILHARTITZ, P ^{[1
]}

KRISMER, R ^{[1
]}

ORTNER, HM ^{[1
]}

机构：

[1] MET WERK PLANSEE GMBH, A-6600 REUTTE, AUSTRIA

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1991年 / 341卷 / 09期

关键词：

NEUTRON-ACTIVATION ANALYSIS; REFRACTORY-METALS; CATION-EXCHANGE; NIOBIUM; ELEMENTS;

D O I：

10.1007/BF00328494

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A trace-matrix separation technique for the analysis of high-purity tantalum by ICP-AES has been developed to overcome the difficulties caused by the line-richness of this matrix. The procedure is based on the extraction of tantalum with diantipyrylmethane from 12 mol/l HF in dichloroethane. The extraction behaviour of 35 elements has been investigated from which 25 can quantitatively be separated with a residual matrix concentration < 0.01% at 1 g sample portion. The achievable limits of detection for ICP-AES are between 0.02-mu-g/g and 10-mu-g/g. The method was applied to the analysis of a high-purity tantalum sample. For a number of elements. the results of this technique are compared with those of other techniques whereby, in general, a good agreement was achieved.

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页码：550 / 554

页数：5

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