Determination of Sodium in Snus by Inductively Coupled Plasma Mass Spectrometry

A method was developed to determine sodium in snus by inductively coupled plasma mass spectrometry(ICP-MS), the main factors affecting the determination were optimized. The results showed that, the detection limit and the quantification limit of sodium was 0.553 4 and 1.845 μg/Kg, respectively, the average recovery rate of this method was 92.00%~97.63%, with the relative standard deviation values below 5.535% (n=6).This method was applied to determine products of different brands, the results showed that the difference of sodium amount among different brands was obvious.