HIGH-SPEED METHOD OF CONTINUOUS BACKGROUND CORRECTION IN ATOMIC-ABSORPTION SPECTROMETRY .2. ASSESSMENT OF METHOD

被引:3
作者
DONNELLY, TH
ECCLESTON, AJ
机构
[1] CSIRO,BAAS BECKING GEOBIOL LAB,POB 378,CANBERRA 2601,ACT,AUSTRALIA
[2] CSIRO,DIV APPL CHEM,POB 4331,MELBOURNE 3001,VICTORIA,AUSTRALIA
关键词
D O I
10.1366/000370275774455310
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The need for background correction in atomic absorption spectrometry (AAS), particularly when graphite furnaces are used to generate the atomic vapor, is discussed. It is shown that a Beckman hydrogen arc lamp is suitable as a continuum source from the point of view of noise, extent of its useful broad band absorption, and light intensity for background-corrected absorption (BCA) measurements over the wavelength range examined (200 to 460 nm). The standard method of determining tin present in rock samples as cassiterite, by extraction as the volatile tin iodide, was examined by flameless AAS with BCA. Advantages of the method are pointed out.
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页码:154 / 158
页数:5
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