Characterization and reduction of silver matrix induced effects in the determination of gold, iridium, palladium, platinum and rhodium by graphite furnace laser-induced fluorescence spectrometry

被引：19

作者：

Masera, E

Mauchien, P

Remy, B

Lerat, Y

机构：

[1] CENS,CEA,LASER ANALYT SPECT GRP,DCC,DPE,SPEA,SPS,F-91191 GIF SUR YVETTE,FRANCE

[2] KODAK EUROPEAN RES,ANALYT LAB,KODAK PATHE,CRT,F-71102 CHALON SUR SAONE,FRANCE

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 1996年 / 11卷 / 03期

关键词：

graphite furnace laser-induced fluorescence spectrometry; two dimensional imaging; condensation phenomena; silver matrix; gold; iridium; palladium; platinum; rhodium;

D O I：

10.1039/ja9961100213

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The determination of ultratraces of Au, Ir, Pd, Pt and Ph in silver nitrate by graphite furnace laser-induced fluorescence (GF-LIF) spectrometry is subject to strong interference by the formation of condensation, Two kinds of condensation are clearly identifiable: diatomic molecules (AgH, Ag-2) and condensed particles, In order to find the best analytical parameters for the determination of Au, Ir, Pd, Pt and Ph in silver nitrate by GF-LIF, a detailed study of the origin and spatio-temporal behaviour of these condensations was carried out, Solutions for matrix interference reduction are proposed, these include the use of neon as a purge gas, a preliminary evaporation of part of the matrix prior to atomization, and the use of a transverse heated atomizer.

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页码：213 / 223

页数：11

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