Determination of Cadmium by FAAS After Solid-Phase Extraction of its 1-Benzylpiperazinedithiocarbamate Complex on Microcrystalline Naphthalene

Authors : Hasan CESUR, Bekir BATI

Pages : 29-36

View : 12 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :By using 1-benzylpiperazinedithiocarbamate insert ignore into journalissuearticles values(1-BPzDC); as a new reagent, a method of solid-phase extraction is described for the pre-concentration of cadmium in water samples prior to its determination by flame atomic absorption spectrometry insert ignore into journalissuearticles values(FAAS);. This method is based on the fact that cadmium forming in aqueous phase cadmium 1-benzylpiperazinedithiocarbamate complex insert ignore into journalissuearticles values(Cdinsert ignore into journalissuearticles values(1-BPzDC);2); can be extracted with microcrystalline naphthalene on solid phase, then back-extracted with potassium cyanide solution into aqueous phase and measured by FAAS. The optimum experimental parameters for the extraction and back-extraction of cadmium were investigated. The obtained recovery was nearly 97% when the enrichment factor was 500 for spiked cadmium solutions. The interfering effects of Minsert ignore into journalissuearticles values(II);, Feinsert ignore into journalissuearticles values(III);, Cuinsert ignore into journalissuearticles values(II);, Niinsert ignore into journalissuearticles values(II);, Pbinsert ignore into journalissuearticles values(II);, Crinsert ignore into journalissuearticles values(III);, Hginsert ignore into journalissuearticles values(II);, Zninsert ignore into journalissuearticles values(II);, Biinsert ignore into journalissuearticles values(III);, Aginsert ignore into journalissuearticles values(I);, acetate, tartarate, oxalate, citrate, EDTA, cyanide, fluoride, chloride, bromide and iodide were investigated, and almost were eliminated except for EDTA and cyanide. The detection limit insert ignore into journalissuearticles values(0.034 m gmL - 1); and the determination limit of the proposed method insert ignore into journalissuearticles values(0.114 m gmL - 1); were evaluated as the concentration corresponding to three times and ten times the standard deviation of the blank signal, respectively.
Keywords : Solid phase extraction, 1 benzylpiperazinedithiocarbamate, cadmium, flame atomic absorption spectrometry, microcrystalline naphthalene