Cloud Point Extraction, Simultaneous and Preconcentration Spectrophotometric Determination of Nickel and Cobalt in Water Samples

被引：0

作者：

Moghimi, Ali ^{[1
]}

Poursharifi, Mohammad Javad ^{[2
]}

机构：

[1] Islamic Azad Univ, Dept Chem, E Tehran Ghiam Dasht Branch, Tehran, Iran

[2] Islamic Azad Univ, Dept Chem, Saveh Branch, Saveh, Iran

来源：

ASIAN JOURNAL OF CHEMISTRY | 2011年 / 23卷 / 04期

关键词：

Nickel; Cobalt; Cloud point extraction; Diethyldithiocarbamate; NONIONIC SURFACTANT; SPECTROMETRY;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cloud point extraction has been used for the preconcentration and simultaneous spectrophotometric determination of nickel and cobalt after the formation of a complex with sodium diethyldithiocarbamate (Na-DDTC) and latter analysis by spectrophotometer using Triton X-114 as surfactant. The parameters affecting the separation phase and detection process were optimized. Under the optimum experimental conditions (i.e., pH = 5, 0.07 mM Na-DDTC, Triton X-114 = 0.25 % (w/v)), calibration graphs were linear in the range of 20-440 and 20-210 mu g L(-1) with detection limits of 9.2 and 8.0 mu g L(-1) for Ni and Co, respectively. The method was applied to the determination of Ni and Co in natural and waste water samples with satisfactory results.

引用

页码：1435 / 1438

页数：4

共 16 条

[1] Determination of cobalt and nickel in water samples by flame atomic absorption spectrometry after cloud point extraction [J].

Chen, JR ;

Teo, KC .

ANALYTICA CHIMICA ACTA, 2001, 434 (02) :325-330

[2] EVALUATION AND OPTIMIZATION OF THE FACTORS AFFECTING NONIONIC SURFACTANT-MEDIATED PHASE SEPARATIONS [J].

FRANKEWICH, RP ;

HINZE, WL .

ANALYTICAL CHEMISTRY, 1994, 66 (07) :944-954

[3] CLOUDING OF TRITON-X-114 - THE EFFECT OF ADDED ELECTROLYTES ON THE CLOUD POINT OF TRITON-X-114 IN THE PRESENCE OF IONIC SURFACTANTS [J].

GU, T ;

GALERAGOMEZ, PA .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1995, 104 (2-3) :307-312

[4]

HINZE WL, 1987, ACS S SERIES, V342

[5]

Laepsada MEF, 1993, ANALYST, V118, P209

[6]

MIURA J, 1976, BUNSEKI KAGAKU, V25, P808

[7]

Moghimi A., 2006, ORIENT J CHEM, V22, P527

[8]

MOGHIMI A, 2007, CHINESE J CHEM, V25, P640

[9] Cloud point extraction, preconcentration and spectrophotometric determination of erbium(III)-2-(3,5-dichloro-2-pyridylazo)-5-dimethylaminophenol [J].

Silva, MF ;

Fernandez, L ;

Olsina, RA ;

Stacchiola, D .

ANALYTICA CHIMICA ACTA, 1997, 342 (2-3) :229-238

[10] Monitoring the elimination of gadolinium-based pharmaceuticals. Cloud point preconcentration and spectrophotometric determination of Gd(III)-2-(3,5-dichloro-2-pyridylazo)-5-dimethylaminophenol in urine [J].

Silva, MF ;

Fernandez, LP ;

Olsina, RA .

ANALYST, 1998, 123 (09) :1803-1807

← 1 2 →