Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Walter Slavin"'
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 57:727-740
Rhodium (Rh) was investigated as a permanent modifier for the atomization of Pb from biological fluids in W-filament atomic absorption spectrometry (AAS). Heating the W-filament with a Rh solution provided a protective coating for subsequent determin
Publikováno v:
Journal of Analytical Atomic Spectrometry. 16:82-89
Several novel W-filament designs are investigated and compared as atomization devices for blood Pb measurements by atomic absorption spectrometry. Two designs (short and long wire filaments) are based on rigidly-wound W-filaments from Osram, while a
Autor:
Walter Slavin
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 54:2051-2055
Autor:
Patrick J. Parsons, Walter Slavin
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 54:853-864
Results of an interlaboratory study are reported for the determination of lead in urine. Two levels of a lyophilized material containing biologically-bound lead were prepared using pooled urine obtained from lead-poisoned children undergoing the CaNa
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 53:1031-1039
Background overcorrection problems with lead in the presence of phosphate in Zeeman graphite furnace atomic absorption spectrometry are investigated. Results show that the overcorrection is not affected by changing the atomization temperature in the
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 50:1475-1480
A low-cost electrothermal atomic absorption spectrometry (AAS) system based on a tungsten filament atomizer is proposed for the measurement of blood lead. Preliminary experiments have been carried out using a tungsten filament enclosed in a glass cel
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 49:1667-1680
Phosphate in various chemical forms has been widely used as a chemical modifier for the determination of Pb by graphite furnace AAS. When Pb was determined in bone digestate, with NH4H2PO4 modifier and a transversely-heated furnace and a longitudinal
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 49:1643-1656
An algorithm previously developed by L'vov et al . [ Spectrochim. Acta 47B , 889 (1992), and Spectrochim. Acta 47B , 1187 (1992)] was extended to allow for improved linearization of the upper end of the calibration curves of Zeeman graphite furnace a
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 49:367-385
The linearization algorithm of L'vov et al . ( Spectrochim. Acta 47B , 1187 (1992)) was employed for the linearization of calibration curves of manganese, copper, silver, thallium and chromium in Zeeman graphite furnace atomic absorption spectrometry
Publikováno v:
Microchemical Journal. 48:278-302
The characteristic mass ( m 0 ), the effective stray light (α), the Zeeman rollover absorbance ( A r ), and the Zeeman sensitivity ratio ( R ) were studied systematically as a function of lamp current and slit width. The effective stray light, α, w