Optimization Study of Plumbane Generation and Preconcentration in Hydride Generation-Graphite Furnace Atomic Absorption Spectrometry
作者:
DimiterL. Tsalev,
PetkoB. Mandjukov,
DoraL. Draganova,
期刊:
Spectroscopy Letters
(Taylor Available online 1992)
卷期:
Volume 25,
issue 7
页码: 943-957
ISSN:0038-7010
年代: 1992
DOI:10.1080/00387019208018206
出版商: Taylor & Francis Group
关键词: Atomic Absorption Spectrometry;Hydride Generation;Graphite Atomizer;Lead Hydride;Lead Preconcentration;Model of Plumbane Generation;Cerium
数据来源: Taylor
摘要:
Optimization of lead hydride generation has been performed and a regression model of the efficiency (chemical yield, E %) of plumbane generation has been derived from experimental data. The effect of various chemical and instrumental parameters on hydride generation and trapping in an absorbing solution of Ce(IV)-KI, with subsequent determination of lead by graphite-furnace atomic absorption spectrometry (GF-AAS) has been studied, in an effort to optimize conditions for preconcentration and determination of nanogram amount of lead. Characteristic concentrations are 1 μg/1 in absorbing solution and 0.2 μg/1 in a 50-ml aliquot of sample solution and the corresponding limits of detection are ca. 4 and 1 μg/1, respectively.
点击下载:
PDF (384KB)
返 回