【摘要】 采用HNO3-HClO4-HF消解体系对茶叶进行湿法消解和微波消解,去除有机成分,保留待测元素。用电感耦合等离子-原子发射光谱法测定茶叶中15种稀土元素Sc、Dy、Er、Eu、Gd、Ho、La、Lu、Nd、Pr、Sm、Tb、Tm、Y、Yb的含量。稀土元素加标回收率为90.2%—102.1%,检出限在0.0009—0.0435mg/L范围内。更多还原

【Abstract】 The tea was digested with HNO3-HClO4-HF mixed system by wet digestion and microwave digestion.The organic composition was removed,and the element of determinands were reserved.The 15 rare earth elements,such as Sc,Dy,Er,Eu,Gd,Ho,La,Lu,Nd,Pr,Sm,Tb,Tm,Y,Yb,were determined by ICP-AES.The additional standard recoveries of rare earth elements were 90.2%—102.1%,while the detection limits were 0.0009—0.0435mg/L.更多还原