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Titolo:
Evaluation of internal standardisation in electrothermal atomic absorptionspectrometry
Autore:
Radziuk, B; Romanova, NP; Thomassen, Y;
Indirizzi:
Bodenseewerk Perkin Elmer & Co GmbH, D-88647 Uberlingen, Germany Bodenseewerk Perkin Elmer & Co GmbH Uberlingen Germany D-88647 , Germany Stiaetersburg State Tech Univ, Dept Analyt Chem, St Petersburg 195251, Russ St Petersburg State Tech Univ St Petersburg Russia 195251 g 195251, Russ Natl Inst Occupat Hlth, N-0033 Oslo, Norway Natl Inst Occupat Hlth Oslo Norway N-0033 upat Hlth, N-0033 Oslo, Norway
Titolo Testata:
ANALYTICAL COMMUNICATIONS
fascicolo: 1, volume: 36, anno: 1999,
pagine: 13 - 16
SICI:
1359-7337(199901)36:1<13:EOISIE>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
6
Recensione:
Indirizzi per estratti:
Indirizzo: Radziuk, B Bodenseewerkermanyn Elmer & Co GmbH, Postfach 101761, D-88647 Uberlingen, G Bodenseewerk Perkin Elmer & Co GmbH Postfach 101761 Uberlingen Germany D-88647
Citazione:
B. Radziuk et al., "Evaluation of internal standardisation in electrothermal atomic absorptionspectrometry", ANAL COMMUN, 36(1), 1999, pp. 13-16

Abstract

Significantly improved performance in electrothermal atomic absorption spectrometry is possible using an internal standardisation technique. A Perkin-Elmer SIMAA 6000 simultaneous multielement spectrometer was used to study the correlation between two integrated absorbance signals. The behaviour ofPb (analyte) in different urine, blood and placenta samples was compared to that of Bi or Tl used as the internal standards. All samples were spiked with known amounts of Pb and Bi or Tl. A satisfactory signal correlation (r= 0.94) between the integrated absorbances for spikes of the analyte and internal standard was observed with Bi as the internal standard. After signal correction, the relative standard deviation of the integrated absorbance for Pb spikes reduced from 29 to 7% for urine, from 19 to 2% for blood and from 22 to 4% for placenta. The mean difference between Pb concentration found in analysed samples by the method of additions and using an internal standard was 10%.

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Documento generato il 27/11/20 alle ore 07:17:18