INDIRECT SPECTROPHOTOMETRIC DETERMINATION OF VANADIUM(IV) BY FLOW-INJECTION ANALYSIS BASED ON THE REDOX REACTION WITH COPPER(II) IN THE PRESENCE OF NEOCUPROINE

被引：20

作者：

ITABASHI, H ^{[1
]}

UMETSU, K ^{[1
]}

SATOH, K ^{[1
]}

KAWASHIMA, T ^{[1
]}

机构：

[1] UNIV TSUKUBA,DEPT CHEM,ANALYT CHEM LAB,TSUKUBA,IBARAKI 305,JAPAN

来源：

ANALYTICAL LETTERS | 1991年 / 24卷 / 07期

关键词：

VANADIUM(IV); IRON(II); COPPER(I)-NEOCUPROINE; FLOW INJECTION ANALYSIS; SPECTROPHOTOMETRY;

D O I：

10.1080/00032719108052965

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An indirect photometric method with a continuous-flow analysis is presented for the determination of trace amounts of vanadium(IV). It is based on the redox reaction of copper(II) with vanadium(IV) in the presence of neocuproine. In the presence of neocuproine, copper(II) is reduced easily by vanadium(IV) to a copper(I)-neocuproine complex, which shows an absorption maximum at 454 nm. By measuring the absorbance of the complex at this wavelength, vanadium(IV) in the range 2 x 10(-6) - 8 x 10(-5) mol dm-3 can be determined at a rate of 120 samples h-1. The fractional determination of vanadium(IV) and iron(II) is also studied.

引用

页码：1219 / 1230

页数：12

共 10 条

[1] MERCUROUS NITRATE AS A REDUCTIMETRIC REAGENT .4. THE DETERMINATION OF COPPER [J].

BELCHER, R ;

WEST, TS .

ANALYTICA CHIMICA ACTA, 1951, 5 (04) :364-367

[2]

ITABASHI H, IN PRESS ANAL SCI

[3]

ITABASHI H, UNPUB ANAL SCI

[4] OXIDATION-REDUCTION POTENTIALS OF SOME COPPER COMPLEXES [J].

JAMES, BR ;

WILLIAMS, RJP .

JOURNAL OF THE CHEMICAL SOCIETY, 1961, (MAY) :2007-+

[5]

MURTHY NK, 1976, INDIAN J CHEM A, V14, P721

[6]

MURTHY NK, 1974, ANAL CHIM ACTA, V73, P413

[7] TITRIMETRIC DETERMINATION OF COPPER(II) WITH IRON(II) IN THE PRESENCE OF THIOCYANATE AND OXALATE [J].

RAO, YP ;

PRASAD, GV ;

MURTHY, NK .

ANALYST, 1987, 112 (12) :1777-1779

[8] THE 1ST DECADE OF FLOW-INJECTION ANALYSIS - FROM SERIAL ASSAY TO DIAGNOSTIC-TOOL [J].

RUZICKA, J ;

HANSEN, EH .

ANALYTICA CHIMICA ACTA, 1986, 179 :1-58

[9]

SERJEANT EP, 1984, SERIES MONOGRAPHS AN, V69

[10]

UMETSU K, UNPUB ANAL SCI

← 1 →