摘要
采用密闭式微波消解系统处理茶叶样品,以电感耦合等离子体发射光谱法测定茶叶样品中铜、铁、锌、锰、钡和铝6种元素。分别从消解液的选择、用酸量及样品消解量等方面进行消解条件的优化,对测定钡、铝元素存在的干扰进行了讨论。各元素的检出限范围为0.15～0.65μg.g-1,回收率为98.6%～106%,精密度为0.8%～5.3%。方法简单快速,效率高,适合进行茶叶中多元素的测定。
Microwave digestion was used to digest the tea,inductively coupled plasma-optical emission spectrometry（ICP-OES） was used to determine copper,iron,zinc,manganese,barium and aluminum in tea.Different digestion solutions,the volume of acids and the digestion quantity of sample were optimized,and the interferience in the determination of barium and aluminium was also discussed.An optimal digestion method was established to carry out the further analysis of tea.The detection limits were in the range of 0.15～0.65 μg·g-1.The recoveries were in the range of 98.6%～106%.The RSDs were in the range of 0.8%～5.3%.The method was simple,fast,effective with low work intensity,which suggests that it＇s an effective method for multi-element determination of tea.
出处
《分析科学学报》
CAS
CSCD
北大核心
2011年第2期257-260,共4页
Journal of Analytical Science
关键词
微波消解
电感耦合等离子体发射光谱法
多元素测定
茶叶
Microwave digestion
Inductively coupled plasma-emission spectrometry
Determination of multi-elements
Tea
作者简介
通讯作者：陈江，男，工程师，主要从事环境监测工作．
