Determination of Cadmium, Chromium,Nickel in Tipping Paper by Graphite Furnace Atomic Absorption Spectrometry

A method for determining cadmium,chromium,nickel in tipping paper by graphite furnace atomic absorption spectrometry was developed and tipping paper samples of 44 cigarette brands were analyzed.The results indicated that:1) the recoveries of cadmium,chromium,nickel were 102.2%,101.9% and 102.2% with the RSDs of 4.40%,3.96% and 4.71%,and the limits of detection of 0.009,0.014,and 0.016 mg/kg,respectively;2) the cadmium content in all samples was below the tolerance of 1 mg/kg,while the chromium contents in 23.7% of the samples were over the tolerance of 15 mg/kg,and only one sample's nickel content was over the tolerance of 5 mg/kg.