Determination of cadmium in lichens by solid sampling graphite furnace atomic absorption spectrometry (SS-GF-AAS)

被引:0
作者
Pavel Coufalík
Antonín Uher
Ondřej Zvěřina
Josef Komárek
机构
[1] Institute of Analytical Chemistry of the Czech Academy of Sciences,Department of Chemistry, Faculty of Science
[2] Masaryk University,Department of Public Health, Faculty of Medicine
[3] Masaryk University,undefined
来源
Environmental Monitoring and Assessment | 2020年 / 192卷
关键词
Cadmium; Lichen; Solid sampling; AAS;
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摘要
The determination of trace metal contents directly from a solid sample is a trend in modern atomic spectrometry. The aim of this study was to develop an analytical method for the routine determination of Cd in lichens using solid sampling graphite furnace atomic absorption spectrometry (SS-GF-AAS). For the determination of Cd, the temperature program of the graphite furnace was optimized using a mixed matrix modifier (Pd + Mg (NO3)2 + Triton X-100). The limit of detection and the limit of quantification were 0.9 μg/kg and 3 μg/kg, respectively. The analytical method for Cd determination in the plant matrix was verified by the analysis of certified reference materials of lichens, seaweed, and rye grass. The developed procedure was applied to the study of Cd distribution in thalli of Usnea antarctica lichen from James Ross Island, Antarctica. The SS-GF-AAS analytical method is particularly suited for use in environmental studies and plant physiology (the microanalysis of anatomical structures).
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