茶叶中微量元素的检测与分析  

The Trace Elements Content Determination in Tea by Using Microwave Digestion-ICP-AES and Dissolution Test by Using ICP-AES

作　　者：许秋梅[1] 王林霞[1] 李秀东[1] 方萍[1] 鲁越青[1] 

机构地区：[1]绍兴文理学院化学化工学院分析测试中心,浙江绍兴312000

出　　处：《绍兴文理学院学报》2012年第7期67-69,共3页Journal of Shaoxing University

基　　金：绍兴文理学院校级科研项目(11010701000701-09LG1019)

摘　　要：分别采用微波消解法和开水浸泡法处理茶叶,用ICP-AES法检测其中镉(Cd)、铬(Cr)、镁(Mg)、铁(Fe)、铝(Al)、钙(Ca)、锰(Mn)的含量.检测结果表明,浸泡方法微量元素含量低于微波消解法;线性工作范围为0.01～100.00μg/mL(r=0.999 9),对方法检出限也进行了探讨;对Mg,Fe,Al,Ca,Mn 5种元素进行加标回收率实验,每种元素加标3种浓度,加标回收率为90%～110%.Microwave digestion method and boiled water were used respectively to deal with tea,and Cd,Cr,Mg,Fe,Al,Ca,Mn concentrations were detected by ICP-AES.Test results show that the concentrations from dissolution were lower than those from microwave digestion.The linear range was 0.01 μg/mL to 100 μg/mL（r = 0.999 9）.The upper bound of detection limit of the methods was also discussed.The spike recovery experiment was done for the five elements Fe,Mg,Al,Ca,and Mn.Each element was spiked at three concentrations and the spike recovery rates were from 90% to 110%.

关 键 词：ICP-AES 微波消解 茶叶 微量元素 

分 类 号：O657.31[理学—分析化学]