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Determination of Pb(II) and Cu(II) by Electrothermal Atomic Absorption Spectrometry after Preconcentration by a Schiff Base Adsorbed on Surfactant Coated Alumina
Author(s) -
Saber tehrani Mohammad,
Rastegar Faramarz,
Parchehbaf Ayob,
Khatamian Masoomeh
Publication year - 2006
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200690145
Subject(s) - chemistry , sorbent , atomic absorption spectroscopy , detection limit , adsorption , nitric acid , elution , sodium diethyldithiocarbamate , copper , sodium dodecyl sulfate , enrichment factor , pulmonary surfactant , metal ions in aqueous solution , analytical chemistry (journal) , chromatography , nuclear chemistry , inorganic chemistry , metal , biochemistry , physics , organic chemistry , quantum mechanics
1,2‐Bis(salicylidenamino)ethane loaded onto sodium dodecyl sulfate‐coated alumina was used as a new chelating sorbent for the preconcentration of traces of Pb(II) and Cu(II) prior to atomic absorption spectrometric determination. The influence of pH, flow rates of sample and eluent solutions, and foreign ions on the recovery of Pb(II) and Cu(II) by this sorbent has been studied. The retained ions were eluted with 4 mol·L nitric acid and determined by electrothermal atomic absorption spectrometry (ETAAS). The data of limit of detection (3 σ ) for Pb(II) and Cu(II) were found to be 8.57 and 2.69 ng·L −1 respectively, while the enrichment factor for both ions was 100. The proposed method was successfully applied to determination of lead and copper in different water samples.