APPLICABILITY OF CHEMICALLY-MODIFIED ELECTRODES FOR DETERMINATION OF COPPER SPECIES IN NATURAL-WATERS

被引：21

作者：

LABUDA, J ^{[1
]}

VANICKOVA, M ^{[1
]}

UHLEMANN, E ^{[1
]}

MICKLER, W ^{[1
]}

机构：

[1] BRANDENBURG LANDERHSCH, INST ANORGAN CHEM, POTSDAM, GERMANY

来源：

ANALYTICA CHIMICA ACTA | 1994年 / 284卷 / 03期

关键词：

DIFFERENTIAL PULSE POLAROGRAPHY; STRIPPING VOLTAMMETRY; VOLTAMMETRY; COPPER; WATERS;

D O I：

10.1016/0003-2670(94)85058-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A procedure based on the stripping voltammetric determination of labile copper after its chemical accumulation on a graphite electrode modified with a complexation agent and a Nafion film is described. The method is sufficiently sensitive for the copper determination in the nM to mu M range with a relative standard deviation of 1 to 6%. The detection window of the proposed technique is similar to that of conventional differential pulse polarography. Results for the copper speciation and the copper complexation capacity in model samples and in river waters are presented. A mathematical description of competitive complexation equilibria is discussed.

引用

页码：517 / 523

页数：7

共 15 条

[1] DETERMINATION OF COPPER AT ELECTRODES MODIFIED WITH LIGANDS OF VARYING COORDINATION STRENGTH - A PREAMBLE TO SPECIATION STUDIES [J].

CHA, SK ;

ABRUNA, HD .

ANALYTICAL CHEMISTRY, 1990, 62 (03) :274-278

[2] EFFECTS OF COMPETITIVE-BINDING ON THE AMPEROMETRIC DETERMINATION OF COPPER WITH ELECTRODES MODIFIED WITH CHROMOTROPE-2B [J].

CHA, SK ;

KASEM, KK ;

ABRUNA, HD .

TALANTA, 1991, 38 (01) :89-93

[3]

CLEVEN R, 1990, P IJ HEYROVSKY CHEM, pTU22

[4] ELECTROCHEMICAL APPROACHES TO TRACE-ELEMENT SPECIATION IN WATERS - A REVIEW [J].

FLORENCE, TM .

ANALYST, 1986, 111 (05) :489-505

[5] THE SYNTHESIS OF 1-PHENYL-3-METHYL-4-ACYL-PYRAZOLONES-5 [J].

JENSEN, BS .

ACTA CHEMICA SCANDINAVICA, 1959, 13 (08) :1668-1670

[6]

LABUDA J, 1992, SELECT ELECTR REV, V14, P33

[7] DETERMINATION OF MERCURY IONS ON A DIPHENYLCARBAZONE BULK MODIFIED GRAPHITE ELECTRODE [J].

LABUDA, J ;

PLASKON, V .

ANALYTICA CHIMICA ACTA, 1990, 228 (02) :259-263

[8]

LABUDA J, IN PRESS ELECTROANAL

[9]

MICKLER W, IN PRESS SEP SCI TEC

[10] ELECTROCHEMICAL SPECIATION ANALYSIS OF METALS AT MEMBRANE-COATED ELECTRODES [J].

MORRISON, GMP ;

FLORENCE, TM .

ELECTROANALYSIS, 1989, 1 (06) :485-491

← 1 2 →