中国食品添加剂Issue(3)：229-232,4.
微波消解-原子吸收光谱法测定昭平绿茶中微量元素
Determination of trace elements in zhaoping green tea by atomic absorption spectrometry with microwave digestion
赵永福1
作者信息
- 1. 贺州学院化学与生物工程系,贺州542800
- 折叠
摘要
Abstract
The aanalysis of trace elements in tea is one of the important projects in tea research because of their great impact on the quality of tea. A method to determine trace elements of Cu, Fe and Zn in three kinds of green tea from Zh-aoping was proposed It used microwave assisted digestion with the mixtures of HNO3and H2O2 ^atomic absorption spec-trometry detection. When temperature - programmed is used in digestion, higher recovery rates were achieved The results of three kinds of green tea were comparatively analyzed The recovery rates of determined elements were from 93. 6% to 101.5%. The relative standard deviations for determination of these elements ranged from 0. 58% to 3.16% ; the content of each trace element in samples is Fe: 98.95 ~ 177. 8μ/g, Zn: 45.67 - 59. 29μg/g, Cu: 19.77 ~ 24. 22μg/g. This method can provide a reliable, sensitive, selective, simple and environmental friendly approach in determine trace elements in tea and is suitable for routine analysis.关键词
昭平绿茶/微量元素/微波消解/火焰原子吸收光谱法Key words
Zhaoping green tea/ trace elements/ microwave digestion/ flame atomic absorption spectrometry
分类
轻工纺织引用本文复制引用
赵永福..微波消解-原子吸收光谱法测定昭平绿茶中微量元素[J].中国食品添加剂,2012,(3):229-232,4.
