ICP-AES测定黑色食品中12种微量元素  

ICP-AES Determination of 12 Microelement in the Black Food

作　　者：王安亭[1] 王祖华[1] 朱再峰[1] 

机构地区：[1]洛阳理工学院环境工程与化学学院,洛阳471023

出　　处：《食品工业》2015年第10期270-273,共4页The Food Industry

摘　　要：黑色食品样品置于聚四氟乙烯罐中,加入硝酸及过氧化氢后在微波消解仪中按设定程序加热消解。所得样品溶液定容至25 m L,用电感耦合等离子体发射光谱法测定其中钙、镁、锌、铁、铜、锰、钼、钴、钒、锶、硒及硼12种元素的含量。12种元素的浓度在7 361.63～0.028 mg·kg-1范围内与其发射强度呈线性关系,方法的检出限（7 s）在0.008～0.56μg·L-1之间。方法应用于分析紫菜与按国标方法分析紫菜（GB/T 5009—2003）所得12元素的测定结果没有显著性差异。方法的回收率在82.7%～110.6%之间,RSD在0.26%～4.23%,小于5%。The sample of the black food was digested with HON3 and H2O2 in a teflon vessel and heated in the microwave digester under the prescribed working program. The sample solution obtained was made upto 25 mL and used directly the ICP- AES determination of 12 microelement （Ca, Mg, Zn, Fe, Mn, Cu, Sr, Se, Mo, CO, V and B）. Linear relationships were showed between values of emission intensity and mass concentration of same range of 7 361.63-0.028 mg.kg-1 with detection limit （7 s） in the range of 0.008-0.56 μg.L-1The determination of 12 microelement was not significant difference through ICP-AES of analytical results and standard materials leave （GB/T 5009-2003）. Values of recovery of the method found were in the range of 82.7%～110.6%, and the relative standard deviations （RSD, n=6） were 0.26%～4.23%, less than 5%.

关 键 词：微波消解样品 电感耦合等离子体原子发射光谱法(ICP-AES) 黑色食品 微量元素 

分 类 号：O657.31[理学—分析化学] TS218[理学—化学]