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Titolo:
REDUCTION OF BACKGROUND ABSORPTION IN THE MEASUREMENT OF CADMIUM, LEAD AND SELENIUM IN WHOLE-BLOOD USING IRIDIUM-SPUTTERED GRAPHITE TUBES IN ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY
Autore:
RADEMEYER CJ; RADZIUK B; ROMANOVA N; THOMASSEN Y; TITTARELLI P;
Indirizzi:
UNIV PRETORIA,DEPT CHEM ZA-0002 PRETORIA SOUTH AFRICA BODENSEEWERK PERKIN ELMER & CO GMBH D-88662 UBERLINGEN GERMANY NATL INST OCCUPAT HLTH N-0033 OSLO NORWAY STN SPERIMENTALE & COMBUSTIBILI I-20097 SAN DONATO MILANE ITALY
Titolo Testata:
Journal of analytical atomic spectrometry
fascicolo: 1, volume: 12, anno: 1997,
pagine: 81 - 84
SICI:
0267-9477(1997)12:1<81:ROBAIT>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
MODIFIER;
Keywords:
ELECTROTHERMAL ATOMIC ABSORPTION SPECTROMETRY; IRIDIUM PERMANENT MODIFIER; BACKGROUND REDUCTION; CADMIUM; LEAD; SELENIUM; WHOLE BLOOD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
C.J. Rademeyer et al., "REDUCTION OF BACKGROUND ABSORPTION IN THE MEASUREMENT OF CADMIUM, LEAD AND SELENIUM IN WHOLE-BLOOD USING IRIDIUM-SPUTTERED GRAPHITE TUBES IN ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY", Journal of analytical atomic spectrometry, 12(1), 1997, pp. 81-84

Abstract

The thermal behaviour during pyrolysis and of the vapour phase duringatomization for Cd, Pb and Se in acid-digested whole blood using Ir-sputtered tubes is described, The performance of Ir as a permanent modifier was affected unfavourably by the complex matrix compared with conventional modifiers. Background absorption was measured using an atomic absorption spectrometer in addition to a diode-array spectrometer and compared with the background obtained in pyrolytic graphite-coated graphite tubes, Both methods of measurement indicated that the background was much reduced in the Ir-sputtered tubes. The decrease in background absorption improves conditions for the measurement of these elements, Background molecular absorption was also measured as a function oftime, Molecular species such as NO were detected in the vapour phase using pyrolytic graphite-coated tubes, whereas CS and CO were detectedusing Ir-sputtered tubes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 18:33:42