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Titolo:
PEAK PURITY ASSESSMENT BY MATRIX PROJECTION FOR SPECTRAL-LINE SELECTION AND BACKGROUND CORRECTION IN INDUCTIVELY-COUPLED PLASMA OPTICAL-EMISSION SPECTROMETRY
Autore:
ZHANG PX; LITTLEJOHN D;
Indirizzi:
UNIV STRATHCLYDE,DEPT PURE & APPL CHEM,295 CATHEDRAL ST GLASGOW G1 1XL LANARK SCOTLAND UNIV STRATHCLYDE,DEPT PURE & APPL CHEM GLASGOW G1 1XL LANARK SCOTLAND
Titolo Testata:
Spectrochimica acta, Part B: Atomic spectroscopy
fascicolo: 10, volume: 50, anno: 1995,
pagine: 1263 - 1279
SICI:
0584-8547(1995)50:10<1263:PPABMP>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVOLVING FACTOR-ANALYSIS; RARE-EARTH ELEMENTS; LIQUID-CHROMATOGRAPHY; CURVE RESOLUTION; TRACE-ELEMENTS; ATOMIC SPECTRA; INTERFERENCES; SIMULATION; PREDICTION;
Keywords:
BACKGROUND CORRECTION; CHEMOMETRICS; ICP-OES; INTERFERENCE; LINE SELECTION; PROJECTION MATRIX; TRUE DETECTION LIMIT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
P.X. Zhang e D. Littlejohn, "PEAK PURITY ASSESSMENT BY MATRIX PROJECTION FOR SPECTRAL-LINE SELECTION AND BACKGROUND CORRECTION IN INDUCTIVELY-COUPLED PLASMA OPTICAL-EMISSION SPECTROMETRY", Spectrochimica acta, Part B: Atomic spectroscopy, 50(10), 1995, pp. 1263-1279

Abstract

This paper describes an improvement of the procedure, proposed previously (Spectrochim. Acta, Part B, 48 (1993) 1517), to provide information about multiplicative and spectral interferences at lines selected for the analysis of samples. The new version of the procedure only requires intensity scans across an analyte line when three solutions are aspirated: a standard solution, the sample solution and the sample spiked with the analyte standard solution. The third solution can be omitted if multiplicative interference is not of interest. Like the initialmethod, the present procedure does not require or assume information about the sample composition nor is the preparation of solutions of suspected interferents required. Figures of merit, namely the structuredbackground factor, and the overall spectral interference have been devised and are used with the true detection limit at a line for line evaluation and selection. As the nonanalyte concomitant contribution to the measured spectrum is estimated, automatic background correction ispossible. The proposed method not only allows selection of the spectral line, but can give a good estimate of the analyte concentration prior to a full quantitative analysis.

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Documento generato il 29/09/20 alle ore 00:24:27