NDLI: Selective homogeneous liquid-liquid extraction and preconcentration of copper(II) into a micro droplet using a benzo-substituted macrocyclic diamide, and its determination by electrothermal atomic absorption spectrometry

Content Provider	Springer Nature Link
Author	Alizadeh, Kamal Zohrevand, Somaieh Ghiasvand, Ali Reza Hashemi, Payman Shamsipur, Mojtaba Sharghi, Hashem Khalifeh, Reza
Copyright Year	2009
Abstract	A fast and reliable method was developed for the selective separation and preconcentration of Cu2+ ions using homogeneous liquid-liquid extraction using a novel benzo-substituted macrocyclic diamide, 5,6,7,8,9,10-hexahydro-2H-1,13,4,7,10-benzodioatriazacyclo-pentadecine-3,11(4 H,12 H)-dione, as a selective complexing agent. An aqueous solution of Zonyl FSA (FSA) was used as a phase-separation agent at pH 4.5. Electrothermal atomic absorption spectrometry was used for Cu2+ determination after preconcentration. The influences of pH, type and volume of the water-miscible organic solvent, concentration of FSA, concentration of the ligand and the effect of diverse ions were investigated. Factorial design and response surface methods were used for the optimization purposes. Under the optimum experimental conditions, 50 ng of Cu2+ in 5 mL aqueous sample could be extracted quantitatively into 76 µL of the sediment phase. The maximum preconcentration factor was 65. The calibration curve was linear in the concentration range 0.2 to 4.0 µg L−1. The detection limit and relative standard deviation were 4 ng L−1 and 4.6%, respectively. The method was successfully applied to the extraction and determination of Cu2+ in natural water samples.
Starting Page	115
Ending Page	121
Page Count	7
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	168
Issue Number	1-2
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2009-12-29
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cu2+ Homogeneous liquid-liquid extraction Electrothermal atomic absorption spectrometry Preconcentration Macrocyclic diamide Ecotoxicology Characterization and Evaluation of Materials Physical Chemistry Inorganic Chemistry Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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