微波消解在茶叶和土壤稀土元素与重金属元素分析中的应用  

Application of microwave digestion in tea and soil pretreatment

作　　者：谭和平[1] 吕昊[1] 高杨[1] 张玉兰[1] 陈能武[1] 王晓玲[1] 唐宇[1] 

机构地区：[1]中国测试技术研究院,四川成都610021

出　　处：《中国测试》2010年第2期37-40,共4页China Measurement & Test

基　　金：国家科技部重点攻关项目(2004DEA71180)

摘　　要：采用微波消解法对茶叶和土壤样品进行处理,以ICP-MS测定了其中的稀土、重金属元素以及I,Te,Rb等鲜有报道的元素,完善了微波消解技术的应用体系,并与电热板消解法做了准确度、精密度与回收率比较。方法检出限(LOD)为0.4(Se)～0.001(Te)ng·g-1。实验证明,微波消解法能够完全满足土壤和茶叶中重金属与稀土元素消解的要求。Rare earth dements, heavy metals and other elements including iodine, tellurium, rubidium in tea and soil were determined by ICP-MS after microwave digestion, and the application database of microwave digestion was renewed. Furthermore, the digestion method was compared with the electricity plate digestion method in those aspects of accuracy, precision and recovery rate. The detection limits of the microwave method were from 0.4（Se）to 0.001（Te）ng·g^-1. It was demonstrated that the microwave digestion pretreatment could satisfy the requirements of rare earth elements and heavy metals in tea and soil.

关 键 词：微波消解 稀土元素 重金属元素 电感耦合等离子体质谱 

分 类 号：TN015[电子电信—物理电子学] TS272[农业科学—茶叶生产加工]