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Titolo:
SIMULTANEOUS DETERMINATION OF MIXTURES OF METAL-IONS BY COMPLEXOMETRIC TITRATION AND MULTIVARIATE CALIBRATION
Autore:
NI YN; WU YL;
Indirizzi:
NANCHANG UNIV,DEPT CHEM NANCHANG 330047 PEOPLES R CHINA
Titolo Testata:
Analytica chimica acta
fascicolo: 1-3, volume: 354, anno: 1997,
pagine: 233 - 240
SICI:
0003-2670(1997)354:1-3<233:SDOMOM>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORTHOGONAL ARRAY DESIGN; LEAST-SQUARES REGRESSION; CHEMOMETRIC METHOD; MICROWAVE DISSOLUTION; BIOLOGICAL SAMPLES; MULTICOMPONENT ANALYSIS; OPTIMIZATION; SPECTROPHOTOMETRY; DIFFERENTIATION; SPECTRA;
Keywords:
COMPLEXOMETRIC TITRATION; METALS; MERCURY FILM ELECTRODE; MULTIVARIATE CALIBRATION;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
Y.N. Ni e Y.L. Wu, "SIMULTANEOUS DETERMINATION OF MIXTURES OF METAL-IONS BY COMPLEXOMETRIC TITRATION AND MULTIVARIATE CALIBRATION", Analytica chimica acta, 354(1-3), 1997, pp. 233-240

Abstract

A new complexometric titration method for the determination of mixtures of metal ions with multivariate calibration was developed. The principle of this method is described and a linear complexometric titration equation is derived. In this work, a mercury film electrode (MFE) was used as indicator electrode for potentiometric measurements, and a double junction Ag/AgCl electrode as reference electrode. The mixtures of metal lolls were titrated with-ethylenediamine tetraacetic acid (EDTA), the titrant volume at each selected potential point was recorded and all these experimental data were then treated by multivariate calibration approaches, such as classical least squares (CLS) and partial least squares (PLS). Twenty synthetic mixtures with two-, three-and four-component combinations of lead, copper, zinc and cobalt with concentration levels from 5x10(-4) mol l(-1) to 1.5x10(-3) mol l(-1) were analyzed by the proposed method and acceptable results were obtained. (C) 1997 Elsevier Science B.V.

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Documento generato il 05/07/20 alle ore 09:46:16