The uses of 1-(2-pyridylazo) 2-naphtol(PAN) impregnated Ambersorb 563 resin on the solid phase extraction of traces heavy metal ions and their determinations by atomic absorption spectrometry

摘要

1-(2-pyridylazo) 2-naphtol(PAN) impregnated Ambersorb 563 resin was used as solid was used as solid phase ectractdor of copper,nickel cadmium lead chromium and cobalt ions in aqueous solutions prior to their atomic absorption spectrometric determinations.The parameters including pH sample volume matrix effets were also investigated The relative stanard deviation (R.S.D) of the combined method of sample treatment preconcentration and determination with stomic absorption spectrometry is generally lower than 10% The limit of detection was between 0.21 and 1.4 mug1~-1 The results were used for preconcentration of analyte ions from natural water samples.The method was also applied to a stream sediment standard reference material(GBW7309) for the detemination of Cu Ni Cd Pd Cr and Co.