Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
SIGNAL OSCILLATION AND OVERCORRECTION IN THE DETERMINATION OF ALUMINUM USING THE TRANSVERSELY HEATED GRAPHITE-FURNACE WITH ZEEMAN BACKGROUND CORRECTION
Autore:
TANG S; PARSONS PJ; SLAVIN W;
Indirizzi:
SUNY ALBANY,SCH PUBL HLTH,DEPT ENVIRONM HLTH & TOXICOL ALBANY NY 12201 SUNY ALBANY,SCH PUBL HLTH,DEPT ENVIRONM HLTH & TOXICOL ALBANY NY 12201 NEW YORK STATE DEPT HLTH,WADSWORTH CTR LABS & RES ALBANY NY 12201 BONAIRE TECHNOL RIDGEFIELD CT 06877
Titolo Testata:
Spectrochimica acta, Part B: Atomic spectroscopy
fascicolo: 9-10, volume: 52, anno: 1997,
pagine: 1351 - 1365
SICI:
0584-8547(1997)52:9-10<1351:SOAOIT>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
ATOMIC-ABSORPTION SPECTROMETRY; SPECTRAL INTERFERENCES; MATRIX VAPORS; ELEMENT LINES; 30 ELEMENTS; OVERCOMPENSATION; LEAD; AAS; SPECTROSCOPY; ATOMIZATION;
Keywords:
ALUMINUM; BONE ANALYSIS; ELECTROTHERMAL ATOMIC ABSORPTION SPECTROMETRY; SERUM ANALYSIS; SPECTRAL INTERFERENCE; TRANSVERSELY HEATED GRAPHITE ATOMIZER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
42
Recensione:
Indirizzi per estratti:
Citazione:
S. Tang et al., "SIGNAL OSCILLATION AND OVERCORRECTION IN THE DETERMINATION OF ALUMINUM USING THE TRANSVERSELY HEATED GRAPHITE-FURNACE WITH ZEEMAN BACKGROUND CORRECTION", Spectrochimica acta, Part B: Atomic spectroscopy, 52(9-10), 1997, pp. 1351-1365

Abstract

In certain situations, oscillating atomic and background signals wereobserved using the transversely heated graphite furnace (Perkin-Elmer4100ZL) in the presence of large amounts of refractory matrix. It wasfound that the oscillation was relatively independent of the analytical wavelength, The general occurrence of oscillation indicates that itprobably results from radiation emitted from the furnace wall and theplatform, scattered by refractory particles, in a situation where theradiation follows a different furnace heating frequency (60 Hz) from that used for the measurement circuit (54.25 Hz). Additionally, a spectral interference occurred in the determination of Al at the 396.2-nm line using the 4100ZL instrument with samples containing large amountsof Ca because of a background overcorrection error. Errors may thus arise in the determination of Al at this wavelength for samples that have high Ca contents, such as bone digestate. However, both oscillationand overcorrection were reduced by (1) addition of 10% H-2 to the Ar purge gas; (2) using a smaller slit width; or (3) using a heating ramp(non-zero) atomization, The overcorrection was not observed at the 309.3-nm Al line. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/04/20 alle ore 16:10:06