摘要
目前随着人民生活水平的提高,消费者对无公害蔬菜的需求也越来越高,因此蔬菜中多种元素的测定具有重要意义。采用电感耦合等离子体质谱法(ICP-MS)同时测定不同蔬菜中铬、砷、钒、锰、铜、锶、铯、银、钡、汞,与以往测定方法相比,具有前处理简单,测定速度快,灵敏度高,多种元素同时测定等优势。该方法的线性相关系数在0.999 2以上,检出限为0.001~0.050 mg/kg,加标回收率在91.08%~96.37%之间,精密度RSD≤7.58%。
At present,with the improvement of people’s living standards,consumers’demand for pollution-free vegetables is also increasing,so the determination of various elements in vegetables is of great significance.ICP-MS was used to determine chromium,arsenic,vanadium,manganese,copper,strontium,cesium,silver,barium and mercury in different vegetables at the same time.Compared with the previous methods,it has the advantages of simple pretreatment,fast determination speed,high sensitivity,simultaneous determination and so on.The linear correlation coefficient was above 0.9992,the detection limit was 0.001-0.050 mg/kg,the recovery rate was 91.08%-96.37%,the precision RSD≤7.58%.
作者
姜大勇
徐立清
刘佩
解恒杰
林晓
JIANG Da-yong;XU Li-qing;LIU Pei;XIE Heng-jie;LIN Xiao(Shandong Institute for Food and Drug Control,Jinan 250100,China)
出处
《中国果菜》
2020年第12期32-35,共4页
China Fruit & Vegetable
