نوع فایل:PDFتعداد صفحات :11سال انتشار : 1395چکیدهIn this method to amounting of the trace little amount of Pb (II) ions in aqueos Samples by CNTcarboxyl which in order to improve the performance of extraction and preconcentration wasused. Amounting of the ions density in solution was performed by the method of flame atomicabsorption spectrometry. The effective parameters on extraction such as: effect of pH, theamount and eluent solvent, time of extraction and effect of other cation were optimized.Concentrate factor was found 30 and LOD method of limit of detection was found to 0.350μg.L-1. the relative standard deviation is 0.91% (RSD%).واژگان کلیدیPb(II), Preconcentration, Solid phase extraction, Multi walled carbon nanotubescarboxylate (MWCNTs-COOH), Flame atomic adsorption spectrometry (FAAS).