4种主要谷物重金属元素含量比较研究

重金属元素对人体危害极大,是人体在进食过程中不可避免的从食品中摄取的有害成分,但是面粉、小米粉、玉米粉和大豆粉中的重金属元素含量未系统比较。应用ICP-MS对面粉、小米粉、玉米粉和大豆粉中的微量元素进行了分析。结果表明:面粉、小米粉、玉米粉和大豆粉中重金属镉(Cd)、铅(Pb)、铬(Cr)和汞(Hg)含量符合国家标准要求,大豆粉和面粉中的砷(As)的含量超标。4种谷物中以大豆粉中砷(As)、镉(Cd)、铬(Cr)和汞(Hg)重金属含量最高,而小米粉中铅(Pb)的含量最高。5种重金属中,以砷(As)的含量最高,其次是铬(Cr)。

Application of ICP-MS to Detect Heavy Metals in Four Kinds of Grain

Heavy metals are one kind of harmful component from food,but their contents in wheat,millet,corn and soybean have not been compared.Contents of heavy metals in wheat,millet,corn and soybean from Beijing market of China were detected by ICP-MS.The results showed that ontents of Cd,Pb,Cr and Hg in wheat,millet,corn and soybean meet to the native standard,but the content of As in wheat and soybean are higher than the limits of native standard.