STUDY OF SOME TUNGSTEN-CONTAINING CHEMICAL MODIFIERS IN GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY

被引：43

作者：

SLAVEYKOVA, VI

TSALEV, DL

机构：

[1] Faculty of Chemistry, University of Sofia, Sofia, 1126

来源：

ANALYTICAL LETTERS | 1990年 / 23卷 / 10期

关键词：

Atomic Absorption Spectrometry; Chemital Modification; electrothetmal Atamization; Tungsten and Palladium Mixed Modifier;

D O I：

10.1080/00032719008052537

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Several chemical modifiers based on tungsten have been evaluated: the individual modifiers W(VI) as WO in aq. 0.2 M NH3 and W(V) as W in H^O^ and the mixed modifiers W(VI)/NH^ + Pd<11), W(V)/H„0„ + Pd(II), and W(V>/H20^ + PO. High efficiency of thermal stabilization for 18 analyte elements of high and moderate volatility has been demonstrated and possible mechanisms of stabilization are discussed. © 1990, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：1921 / 1937

页数：17

共 24 条

[1] CARBIDE-TREATED GRAPHITE CUVETTES FOR ELECTROTHERMAL ATOMIZATION PREPARED BY IMPREGNATION WITH METAL CHLORIDES [J].