Determination of Pb in Cigarette Tipping Paper byFlow Injection-Hydride Generation-atomic Absorption Spectrometry

The method of measuring trace Pb in tipping paper by flow injection-Hydride generation-atomic absorption spectrometry was studied. The optimum experiment conditions for hydride generation were investigated. Recovery of the method was 95.0%~104.5%, and detection limit was 0.22 ng/mL, linearity was kept in range of 0~50 ng/mL，the linear regression equation is y=0.012x+0.0106, the correlation coefficient is 0.999 7, and the relative standard deviation(RSD) was 1.2%~3.3 %.