Comparison of electrothermal atomic absorption spectrometry and atomic emission spectrometry for determination of chromium in urine

Reliable results for Cr in urine, 0.1-0.3 ng mL super(-1) (7), were first determined by using continuum source, echelle monochromator, wavelength-modulated AAS (CEWM-AAS). Electrothermal atomization is an effective excitation source for atomic emission spectrometry (AES). Wavelength modulated AES (W...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 1983-07, Vol.55 (8), p.1417-1419
Main Authors: Harnly, J. M, Patterson, K. Y, Veillon, Claude, Wolf, W. R, Marshall, John, Littlejohn, David, Ottaway, J. M, Miller-Ihli, N. J, O'Haver, T. C
Format: Article
Language:English
Subjects:
Chromium - urine
Humans
Specimen Handling - methods
Spectrophotometry, Atomic - methods
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Summary:Reliable results for Cr in urine, 0.1-0.3 ng mL super(-1) (7), were first determined by using continuum source, echelle monochromator, wavelength-modulated AAS (CEWM-AAS). Electrothermal atomization is an effective excitation source for atomic emission spectrometry (AES). Wavelength modulated AES (WM-AES), with a lock-in amplifier, offers detection limits lower than those reported for CEWM-AAS and enjoys the same background correction advantages as CEWM-AAS. In this study, the CEWM-AAS system was converted to a WM-AES system by removing the continuum source. CEWM-AAS and WM-AES are compared with respect to accuracy and detection limits for the determination of Cr in urine.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac00259a052