期刊
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
卷 62, 期 9, 页码 873-883出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2007.03.009
关键词
high-resolution continuum source atomic absorption spectrometry; electrothermal atomization; solid sampling analysis; multielement determination; crude oil analysis; background correction
类别
The literature about applications of high-resolution continuum source atomic absorption spectrometry (HR-CS AAS) with electrothermal atomization is reviewed. The historic development of HR-CS AAS is briefly summarized and the main advantages of this technique, mainly the 'visibility' of the spectral environment around the analytical line at high resolution and the unequaled simultaneous background correction are discussed. Simultaneous multielement CS AAS has been realized only in a very limited number of cases. The direct analysis of solid samples appears to have gained a lot from the special features of HR-CS AAS, and the examples from the literature suggest that calibration can be carried out against aqueous standards. Low-temperature losses of nickel and vanadyl porphyrins could be detected and avoided in the analysis of crude oil due to the superior background correction system. The visibility of the spectral environment around the analytical line revealed that the absorbance signal measured for phosphorus at the 213.6 nm non-resonance line without a modifier is mostly due to the PO molecule, and not to atomic phosphorus. The future possibility to apply high-resolution continuum source molecular absorption for the determination of non-metals is discussed. (C) 2007 Elsevier B.V. All rights reserved.
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