微波消解-电感耦合等离子体质谱法测定石墨烯粉末材料中19种痕量元素  

ICP-MS Determination of 19 Trace Elements in Graphene Powder Materials with Microwave Digestion

作　　者：刘巍[1] 吕婷 陶美娟[1] LIU Wei;LV Ting;TAO Meijuan(Shanghai Research Institute of Materials,Shanghai 200437,China)

机构地区：[1]上海材料研究所

出　　处：《理化检验（化学分册）》2019年第11期1318-1322,共5页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：石墨烯粉末材料样品采用硝酸-氢氟酸-过氧化氢混合液进行微波消解,冷却后,用水稀释至100.0mL,采用电感耦合等离子体质谱法测定其中砷、钡、铋、钴、铬、铜、钾、镁、钼、镍、铅、锑、锡、钛、钒、锌、镉、镧、铈等19种痕量元素的含量。以103 Rh和45Sc为内标,采用同位素克服质谱干扰。19种痕量元素的质量浓度均在500μg·L^-1以内与其对应的发射强度呈线性关系,检出限为0.01~3.9μg·L^-1。加标回收率为82.2%~123%,测定值的相对标准偏差(n=8)为2.6%~8.5%。The sample of graphene powder material was dissolved with the mixture of nitric acid,hydrofluoric acid and hydrogen peroxide by microwave digestion.After cooling,the digestion solution was diluted to100.0 mL.ICP-MS was applied to the determination of 19 trace elements,i.e.As,Ba,Bi,Co,Cr,Cu,K,Mg,Mo,Ni,Pb,Sb,Sn,Ti,V,Zn,Cd,La and Ce in the sample solution.103 Rh and 45 Sc were used as internal standards and isotopes were used to overcome mass spectrometry interference.Linear relationships between values of emission intensity and mass concentration of the 19 trace elements were kept in the same range within 500μg·L-1,with detection limits in the range of 0.01-3.9μg·L-1.Values of recovery found by standard addition method were in the range of 82.2%-123%,and values of RSDs(n=8)of determined values were in the range of 2.6%-8.5%.

关 键 词：电感耦合等离子体质谱法 石墨烯 痕量元素 微波消解 

分 类 号：O657.63[理学—分析化学]