Determination of Pb（Ⅱ） and Cu（Ⅱ） by Electrothermal Atomic Absorption Spectrometry after Preconcentration by a Schiff Base Adsorbed on Surfactant Coated Alumina  

作　　者：SABER TEHRANI, Mohammad RASTEGAR, Faramarz PARCHEHBAF, Ayob KHATAMIAN, Masoomeh 

机构地区：[1]Department of Chemistry, Science and Research Campus, Islamic Azad University, Tehran, Iran [2]Plate-Form Inorganic Analytical Chemistry, Louis Pasteur University, Strasbourg, France [3]Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran

出　　处：《Chinese Journal of Chemistry》2006年第6期765-769,共5页中国化学（英文版）

摘　　要：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 （3σ） 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.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 （3σ） 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.

关 键 词：determination of lead and copper PRECONCENTRATION 1 2-bis（salicylidenamino）ethane ETAAS 

分 类 号：O614.121[理学—无机化学] O652.6[理学—化学]