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Optimization and application of homogeneous liquid-liquid extraction in preconcentration of copper (II) in a ternary solvent system

Farajzadeh, Mir Ali; Bahram, Morteza; Zorita, Saioa LU and Mehr, Behzad Ghorbani (2009) In Journal of Hazardous Materials 161(2-3). p.1535-1543
Abstract
In this study a homogeneous liquid-liquid extraction based on the Ph-dependent phase-separation process was investigated using a ternary solvent system (water-acetic acid-chloroform) for the preconcentration of Cu2+ ions. 8-Hydroxy quinoline was used as the chelating agent prior to its extraction. Flame atomic absorption spectro photometry using acetylene-air flame was used for the quantitation of analyte after preconcentration. The effect of various experimental parameters in extraction step was investigated using two optimization methods, one variable at a time and central composite design. The experimental design was done at five levels of operating parameters. Nearly the same optimized results were obtained using both methods: sample... (More)
In this study a homogeneous liquid-liquid extraction based on the Ph-dependent phase-separation process was investigated using a ternary solvent system (water-acetic acid-chloroform) for the preconcentration of Cu2+ ions. 8-Hydroxy quinoline was used as the chelating agent prior to its extraction. Flame atomic absorption spectro photometry using acetylene-air flame was used for the quantitation of analyte after preconcentration. The effect of various experimental parameters in extraction step was investigated using two optimization methods, one variable at a time and central composite design. The experimental design was done at five levels of operating parameters. Nearly the same optimized results were obtained using both methods: sample size, 5 mL: volume of NaOH 10 M, 2 mL; chloroform volume, 300 mu L; 8-hydroxy quinoline concentration more than 0.01 M and Salt amount did not affect the extraction significantly. Under the optimum conditions the calibration graph was linear over the range 10-2000 mu g L-1. The relative standard deviation was 7.6% for six repeated determinations (C = 500 mu g L-1). Furthermore, the limit of detection (S/N = 3) and limit of quantification (S/N = 10) of the method were obtained as 1.74 and 6 mu g L-1, respectively. (C) 2008 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Atomic absorption spectrophotometry, Central composite design, time, One variable at a, Homogeneous liquid-liquid extraction, Optimization
in
Journal of Hazardous Materials
volume
161
issue
2-3
pages
1535 - 1543
publisher
Elsevier
external identifiers
  • wos:000262292400126
  • scopus:56249131426
ISSN
1873-3336
DOI
10.1016/j.jhazmat.2008.05.041
language
English
LU publication?
yes
id
347a4c50-f3ac-4199-bac4-e9f2bc7c14c5 (old id 1312771)
date added to LUP
2009-03-13 12:25:21
date last changed
2017-10-22 03:39:07
@article{347a4c50-f3ac-4199-bac4-e9f2bc7c14c5,
  abstract     = {In this study a homogeneous liquid-liquid extraction based on the Ph-dependent phase-separation process was investigated using a ternary solvent system (water-acetic acid-chloroform) for the preconcentration of Cu2+ ions. 8-Hydroxy quinoline was used as the chelating agent prior to its extraction. Flame atomic absorption spectro photometry using acetylene-air flame was used for the quantitation of analyte after preconcentration. The effect of various experimental parameters in extraction step was investigated using two optimization methods, one variable at a time and central composite design. The experimental design was done at five levels of operating parameters. Nearly the same optimized results were obtained using both methods: sample size, 5 mL: volume of NaOH 10 M, 2 mL; chloroform volume, 300 mu L; 8-hydroxy quinoline concentration more than 0.01 M and Salt amount did not affect the extraction significantly. Under the optimum conditions the calibration graph was linear over the range 10-2000 mu g L-1. The relative standard deviation was 7.6% for six repeated determinations (C = 500 mu g L-1). Furthermore, the limit of detection (S/N = 3) and limit of quantification (S/N = 10) of the method were obtained as 1.74 and 6 mu g L-1, respectively. (C) 2008 Elsevier B.V. All rights reserved.},
  author       = {Farajzadeh, Mir Ali and Bahram, Morteza and Zorita, Saioa and Mehr, Behzad Ghorbani},
  issn         = {1873-3336},
  keyword      = {Atomic absorption spectrophotometry,Central composite design,time,One variable at a,Homogeneous liquid-liquid extraction,Optimization},
  language     = {eng},
  number       = {2-3},
  pages        = {1535--1543},
  publisher    = {Elsevier},
  series       = {Journal of Hazardous Materials},
  title        = {Optimization and application of homogeneous liquid-liquid extraction in preconcentration of copper (II) in a ternary solvent system},
  url          = {http://dx.doi.org/10.1016/j.jhazmat.2008.05.041},
  volume       = {161},
  year         = {2009},
}