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不同地区茶叶中微量元素的测定
引用本文:徐瑞,刘守龙,刘志宇,蒋昌鹏,易雪峰,赵江,陈红云.不同地区茶叶中微量元素的测定[J].大理学院学报,2013(10):47-49.
作者姓名:徐瑞  刘守龙  刘志宇  蒋昌鹏  易雪峰  赵江  陈红云
作者单位:大理学院公共卫生学院,云南大理671000
基金项目:大理学院大学生科研基金资助项目(KYSX2012040)
摘    要:目的:对云南普洱茶、贵州苦丁茶、河北茉莉花茶中的锌(Zn)、铁(Fe)、铜(cu)、盌t(Mn)4种微量元素进行测定。方法:将样品用干法进行消解,并利用火焰原子吸收光谱法测定3种茶叶中Zn、Fe、Cu、Mn4种微量元素的含量。结果:Zn、Fe、Cu、Mn4种微量元素在3个地区茶叶中含量分别是云南普洱茶:43.43ug/g、57.28Ixg/g、33.14txg/g、135.67txg/g;贵州苦丁茶:19.91ug/g、32.98ug/g、9.74ug/g、77.08ug/g;河北茉莉花茶:36.09ug/g、84.37ug/g、28.52ug/g、220.08ug/g。结论:3种茶叶中均含有丰富的微量元素,不同地区茶叶中微量元素含量有一定差异。

关 键 词:茶叶  微量元素  原子吸收

The Determination of Trace Elements in Three Kinds of Tea from Different Places
XU Rui,LIU Shoulong,LIU Zhiyu,JIANG Changpeng,YI Xuefeng,ZHAO Jiang,CHEN Hongyun.The Determination of Trace Elements in Three Kinds of Tea from Different Places[J].Journal of Dali University,2013(10):47-49.
Authors:XU Rui  LIU Shoulong  LIU Zhiyu  JIANG Changpeng  YI Xuefeng  ZHAO Jiang  CHEN Hongyun
Institution:(College of Public Health, Dali University, Dali, Yunnan 671000, China)
Abstract:Objective: To determinate the content of the trace elements (Fe, Mn, Zn, Cu) in Yunnan Pu'er tea, Hebei jasmine tea, Guizhou Kuding tea. Methods: Nitric acid and perchloric acid (4+1) were used to disintegrate the ground sample of tea. Flame atom- ic absorption spectrometric method was used to determine four trace elements content in three kinds of tea. Results: The content of trace elements (Zn, Fe, Cu, Mn) in three districts is respectively that Yunnan Pu'er tea: 43.43 ug/g, 57.28 Ixg/g, 33.14 ug/g, 135.67 ug/g, Guizhou knding tea: 19.91 ug/g, 32.98 ug/g, 9.74 ug/g, 77.08 ug/g, Hebei Jasmine tea: 36.09 ug/g, 84.37 ug/g, 28.52 Ixg/g, 220.08 ug/g. Conclusion: All three kinds of tea contain rich trace elements and there are differences about the content of trace ele- ments in different areas.
Keywords:tea  trace elements  atomic absorption
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