Abstract:

Tobacco samples were dissolved by HNO3-HClO4-H2O2. Then, the concentration of Cadmium(Cd) was determined by hydride generation-atomic fluorescence spectrometery (AFS) with the best experimental conditions and instrumental settings, including the concentrations of the acidity of samples, carrier flow, reducer, Co2+ and the best settings of AFS. Under the optimal experimental conditions, the detection limits of Cd is 0.0031 μg/L, and the linear scope is during 0.00 and 3.00 μg/L, and the C.V. of the sample is less than 3.0%, and the recovery rate is 88.7%~99.5%. Therefore, the method characterized by veracity, stabilization and high precision will be effective to determine Cd in Tobacco.