Determination of 12 Types of Nitrosamines in A Variety of Foods
By using the improved QuEChERS extraction and purification method and gas chromatography-mass spectrometry(GC-MS)technology,the determination method of 12 kinds of nitrosamines in various kinds of food was established,which was separated by DB-HeayWAX column,qualitatively and quantitatively analyzed by mass spectrometry,and quantified by matrix-matched external standard method.The results showed that the linear correlation coefficients of 12 kinds of nitrosamines within concentration range of 2.0-100.0 μg/L were all greater than 0.995.The detection limits of the targets in different matrices(cured meat products,salted aqustic products,pickled vegetables,beer)were all lower than 0.2 μg/kg,and the recovery rate is 81.8％-119.1％.It indicated that this method had good reproducibility and sensitivity,which was simple to operate,and was suitable for qualitative and quantitative analysis of 12 kinds of trace nitrosamines in various foods.
万方数据
维普
