Spectrophotometric determination of copper in waste water using liquid-liquid extraction in a flow-injection system

被引：22

作者：

Alonso, A ^{[1
]}

Almendral, MJ ^{[1
]}

Curto, Y ^{[1
]}

Porras, MJ ^{[1
]}

机构：

[1] Univ Salamanca, Fac Chem, Dept Quim Analit Nutr & Bromatol, E-37008 Salamanca, Spain

来源：

MICROCHIMICA ACTA | 2003年 / 143卷 / 04期

关键词：

liquid-liquid extraction; flow injection; copper; ion-pair; waste water;

D O I：

10.1007/s00604-003-0068-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A flow-injection procedure for the determination of copper in waste water is described. The procedure is based on the formation of an ion-pair between tetrabutylammonium and the tetrathiocyanatocuprate(II) anion. This ion-pair is extracted with chloroform, and the absorbance of the organic phase is measured at 485 nm. Concentrations of copper greater than or equal to0.4 mg L-1 can be detected with a linear application range of between 0.5 and 25 mg L-1, a relative standard deviation of 2.3% (0.8 mg L-1, n=10) and a sampling frequency of 30 h(-1). Under the proposed working conditions, only Ni(II) and Pd(II) interfere at molar ratios Ni(II)/Cu(II) greater than or equal to 50 and Pd(II)/Cu(II) greater than or equal to 100.

引用

页码：217 / 220

页数：4

共 13 条

[1] Determination of bismuth in pharmaceutical products using liquid-liquid extraction in a flow injection system [J].

Alonso, A ;

Almendral, MJ ;

Báez, MD ;

Porras, MJ ;

Lávin, FL ;

de María, CG .

ANALYTICA CHIMICA ACTA, 2000, 408 (1-2) :129-133

[2] Flow-injection solvent extraction with and without phase separation - Fluorimetric determination of aluminium in water [J].

Alonso, A ;

Almendral, MJ ;

Porras, MJ ;

Curto, Y ;

de Maria, CG .

ANALYTICA CHIMICA ACTA, 2001, 447 (1-2) :211-217

[3] Stopped-flow injection liquid-liquid extraction spectrophotometric determination of palladium in airborne particulate matter and automobile catalysts [J].

Anthemidis, AN ;

Themelis, DG ;

Stratis, JA .

TALANTA, 2001, 54 (01) :37-43

[4] A new method to determine enzyme activities in two-phase systems by Flow Injection Analysis (FIA) [J].

Becker, M ;

Spohn, U .

BIOSENSORS & BIOELECTRONICS, 1998, 13 (7-8) :925-930

[5] Flow injection analysis of copper diethyldithiocarbamate in high resistance toluene media using a microelectrode detector [J].

Cardwell, TJ ;

Santos, JH ;

Bond, AM .

ANALYTICA CHIMICA ACTA, 1997, 340 (1-3) :169-174

[6] Coupling of flow injection wetting-film extraction without segmentation and phase separation to flame atomic absorption spectrometry for the determination of trace copper in water samples [J].

Chen, HW ;

Liu, JS ;

Mao, XQ .

ANALYTICA CHIMICA ACTA, 1998, 370 (2-3) :151-161

[7]

Fang Z., 1993, FLOW INJECTION SEPAR

[8] APPLICATION OF A WAVEGUIDE CAPILLARY CELL IN THE DETERMINATION OF COPPER BY FLOW-INJECTION ANALYSIS [J].

FUJIWARA, K .

ANALYTICA CHIMICA ACTA, 1988, 212 (1-2) :245-251

[9] THE DETERMINATION OF COPPER BY FLOW-INJECTION ANALYSIS WITH FLAME AAS DETECTION AFTER PRECONCENTRATION BY SOLVENT-EXTRACTION [J].

KUBAN, V ;

KOMAREK, J ;

CAJKOVA, D .

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS, 1989, 54 (10) :2683-2691

[10]

Manahan S. E., 1994, ENV CHEM

← 1 2 →