Optimization of dispersive liquid-liquid microextraction of copper (II) by atomic absorption spectrometry as its oxinate chelate: Application to determination of copper in different water samples
(2008) In Talanta 75(3). p.832-840- Abstract
- In this study a dispersive liquid-liquid microextraction (DLLME) method based on the dispersion of an extraction solvent into aqueous phase in the presence of a dispersive solvent was investigated for the preconcentration of Cu2+ ions. 8-Hydroxy quinoline was used as a chelating agent prior to extraction. Flame atomic absorption spectrometry using an acetylene-air flame was used for quantitation of the analyte after preconcentration. The effect of various experimental parameters on the extraction was investigated using two optimization methods, one variable at a time and central composite design. The experimental design was performed at five levels of the operating parameters. Nearly the same results for optimization were obtained using... (More)
- In this study a dispersive liquid-liquid microextraction (DLLME) method based on the dispersion of an extraction solvent into aqueous phase in the presence of a dispersive solvent was investigated for the preconcentration of Cu2+ ions. 8-Hydroxy quinoline was used as a chelating agent prior to extraction. Flame atomic absorption spectrometry using an acetylene-air flame was used for quantitation of the analyte after preconcentration. The effect of various experimental parameters on the extraction was investigated using two optimization methods, one variable at a time and central composite design. The experimental design was performed at five levels of the operating parameters. Nearly the same results for optimization were obtained using both methods: sample size 5 mL; volume of dispersive solvent 1.5 mL; dispersive solvent methanol; extracting solvent chloroform; extracting solvent volume 250 mu L; 8-hydroxy quinoline concentration and salt amount do not affect significantly the extraction. Under the optimum conditions the calibration graph was linear over the range 50-2000 mu g L-1. The relative standard deviation was 5.1% for six repeated determinations at a concentration of 500 mu g L-1. The limit of detection (S/N = 3) was 3 mu g L-1. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1203542
- author
- Farajzadeh, Mir Ali ; Bahram, Morteza ; Mehr, Behzad Ghorbani and Jönsson, Jan Åke LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- central composite design, a time, one variable at, dispersive liquid-liquid microextraction, optimization, copper ion determination, atomic absorption spectrometry
- in
- Talanta
- volume
- 75
- issue
- 3
- pages
- 832 - 840
- publisher
- Elsevier
- external identifiers
-
- wos:000255828800035
- scopus:41649090146
- pmid:18585154
- ISSN
- 1873-3573
- DOI
- 10.1016/j.talanta.2007.12.035
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Analytical Chemistry (S/LTH) (011001004)
- id
- 69094c81-04cd-46e1-ab15-fd0ca4b2e4fc (old id 1203542)
- date added to LUP
- 2016-04-01 14:23:48
- date last changed
- 2022-01-28 00:24:15
@article{69094c81-04cd-46e1-ab15-fd0ca4b2e4fc,
abstract = {{In this study a dispersive liquid-liquid microextraction (DLLME) method based on the dispersion of an extraction solvent into aqueous phase in the presence of a dispersive solvent was investigated for the preconcentration of Cu2+ ions. 8-Hydroxy quinoline was used as a chelating agent prior to extraction. Flame atomic absorption spectrometry using an acetylene-air flame was used for quantitation of the analyte after preconcentration. The effect of various experimental parameters on the extraction was investigated using two optimization methods, one variable at a time and central composite design. The experimental design was performed at five levels of the operating parameters. Nearly the same results for optimization were obtained using both methods: sample size 5 mL; volume of dispersive solvent 1.5 mL; dispersive solvent methanol; extracting solvent chloroform; extracting solvent volume 250 mu L; 8-hydroxy quinoline concentration and salt amount do not affect significantly the extraction. Under the optimum conditions the calibration graph was linear over the range 50-2000 mu g L-1. The relative standard deviation was 5.1% for six repeated determinations at a concentration of 500 mu g L-1. The limit of detection (S/N = 3) was 3 mu g L-1.}},
author = {{Farajzadeh, Mir Ali and Bahram, Morteza and Mehr, Behzad Ghorbani and Jönsson, Jan Åke}},
issn = {{1873-3573}},
keywords = {{central composite design; a time; one variable at; dispersive liquid-liquid microextraction; optimization; copper ion determination; atomic absorption spectrometry}},
language = {{eng}},
number = {{3}},
pages = {{832--840}},
publisher = {{Elsevier}},
series = {{Talanta}},
title = {{Optimization of dispersive liquid-liquid microextraction of copper (II) by atomic absorption spectrometry as its oxinate chelate: Application to determination of copper in different water samples}},
url = {{http://dx.doi.org/10.1016/j.talanta.2007.12.035}},
doi = {{10.1016/j.talanta.2007.12.035}},
volume = {{75}},
year = {{2008}},
}