Separation and preconcentration of Pb(II) and Cu(II) ions via carrier element-free coprecipitation using an acetohydrazide derivative

Authors : Süreyya Oğuz TÜMAY, Murat YAZAR, Duygu ÖZDEŞ, Hakan BEKTAŞ, Celal DURAN

Pages : 1034-1043

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A new method based on the combination of carrier element-free coprecipitation and flame atomic absorption spectrometric determination has been investigated for simultaneous separation and preconcentration of Pbinsert ignore into journalissuearticles values(II); and Cuinsert ignore into journalissuearticles values(II); ions in some environmental solid and liquid samples. The 2-{3-insert ignore into journalissuearticles values(4-methylbenzyl);-4-[2-insert ignore into journalissuearticles values(1H-indol-3-yl);ethyl]-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl} -N`-insert ignore into journalissuearticles values(phenylmethylene); acetohydrazide insert ignore into journalissuearticles values(MITA); was utilized as an organic coprecipitating agent without using a carrier element for coprecipitation of the analyte ions. The effects of experimental conditions including aqueous solution pH, MITA quantity, sample volume, standing time, and centrifugation rate and time were investigated in detail and optimized. The influences of some foreign ions were also evaluated on the quantitative recoveries of the analyte ions. The preconcentration factors were 125 for both analyte ions. The detection limits were 1.32 $\mu $g L$^{-1}$ and 0.47 $\mu $g L$^{-1}$ for Pbinsert ignore into journalissuearticles values(II); and Cuinsert ignore into journalissuearticles values(II); ions, respectively, and the relative standard deviations insert ignore into journalissuearticles values(RSDs); were lower than 4% for both analyte ions. After the accuracy of the method was checked, it was applied to sea and stream water as liquid samples and waste tea and tobacco as solid samples to determine the levels of Pbinsert ignore into journalissuearticles values(II); and Cuinsert ignore into journalissuearticles values(II); ions.
Keywords : Heavy metals, separation and preconcentration, coprecipitation, carrier element free coprecipitation