An alternative to the popular atomization concept for electrothermal atomic absorption spectrometry

被引：8

作者：

Katskov, DA ^{[1
]}

Marais, PJJG ^{[1
]}

McCrindle, RI ^{[1
]}

机构：

[1] TECHNIKON PRETORIA,ZA-0001 PRETORIA,SOUTH AFRICA

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 1996年 / 51卷 / 9-10期

关键词：

atomization; electrothermal atomic absorption spectrometry; filter furnace; platform furnace;

D O I：

10.1016/0584-8547(96)01481-4

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

When chemical modification of the sample in electrothermal atomic absorption spectrometry (ETAAS) using a tube- or platform furnace atomizer is carried out, the smooth surface of the pyrographite substrate does not provide favorable conditions for the effective interaction of reagents and temperature resolved release of products. This goal can be reached by means of spatial separation of the reaction and evaporation from the analytical zone, narrowing of the vapor passage, supplying the reaction volume with a substrate of large surface area and using graphite as a selective adsorbent. The proposal is embodied in the design of the filter furnace atomizer. Examples of radical improvement of analytical characteristics of the ETAAS method are provided in original papers using the filter furnace to verify the necessity of alteration of basic concept for ETAAS atomization.

引用

页码：1291 / 1295

页数：5

共 4 条

[1] DIFFUSION OF MOLECULAR VAPORS THROUGH HEATED GRAPHITE [J].