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Development of a new enrichment method for simultaneous determination of copper and zinc in water samples
Author(s) -
Ciftci Harun,
Tunc Turgay,
Tasdemir Ibrahim Hudai,
Ciftci Esen
Publication year - 2011
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.419
Subject(s) - chemistry , adsorption , copper , elution , langmuir adsorption model , zinc , atomic absorption spectroscopy , detection limit , chelating resin , metal ions in aqueous solution , extraction (chemistry) , trace amounts , matrix (chemical analysis) , chromatography , analytical chemistry (journal) , metal , nuclear chemistry , medicine , physics , alternative medicine , organic chemistry , quantum mechanics , pathology
In the present study, an enrichment and separation method for the simultaneous determination of trace amounts of Cu and Zn in water samples was developed. Copper and Zn ions found in water matrix in trace amounts were preconcentrated on Duolite XAD 761 resin without using any chelating agent and determined by flame atomic absorption spectrometer (FAAS). Experimental parameters such as pH, concentration of metal ions, amount of resin, and sample volume for quantitative determination of Cu and Zn ions were optimized. The elution process was performed by using 5 ml of 2 mol/L HCl solution. The preconcentration factors for Cu and Zn were found to be 160 and 200, respectively. Under optimized conditions, limit of detection for Cu and Zn were 2.46 and 3.54 µg/L, respectively. The Langmuir adsorption model was applied to describe the equilibrium isotherm. The Langmuir monolayer adsorption capacity of resin was estimated as 31.2 and 17.7 mg/g for Cu and Zn, respectively. The proposed method was successfully applied to determine the Cu and Zn content of various water samples. Environ. Toxicol. Chem. 2011; 30:616–621. © 2010 SETAC