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Position: Home > Articles > Determination on the Content of Metal Elements in Puer Tea by Flame Atomic Absorption Spectrophotometry Journal of Anhui Agricultural Sciences 2010,38 (18) 397-398

火焰原子吸收分光光度法测定普洱茶中金属元素的含量

作  者:
李翠莉
单  位:
吉林化工学院
关键词:
火焰原子吸收分光光度法;普洱茶;金属元素
摘  要:
[目的]采用火焰原子吸收分光光度法测定普洱茶中金属元素的含量。[方法]普洱茶样品经粉碎干燥后,用硝酸-高氯酸混合液进行消解处理,采用火焰原子吸收分光光度法测定K、Ca、Mg、Mn、Fe、Na、Cu、Zn、Cr、Ni的含量。[结果]普洱茶中金属元素的含量为K>Ca>Mg>Mn>Fe>Na>Cu>Zn>Cr>Ni,各元素的加标回收率为98.56%~103.02%,RSD为1.07%~2.97%,准确度和精密度均符合要求。[结论]火焰原子吸收分光光度法测定普洱茶中金属元素的含量是可行的。
译  名:
Determination on the Content of Metal Elements in Puer Tea by Flame Atomic Absorption Spectrophotometry
作  者:
LI Cui-li (Jilin Institute of Chemical Technology,Jilin,Jilin 132022)
关键词:
FAAS;Pure tea;Metal elements
摘  要:
[Objective]The research aimed to determine the content of metal elements in Puer tea using flame atomic absorption spectrophotometry(FAAS).[Method] Puer tea samples were broken and dried,and then were digested by mixtures of HNO3 and HClO4 by wet digestion.And the content of K,Ca,Mg,Mn,Fe,Na,Cu,Zn,Cr and Ni were determined by FAAS.[Result] The contents of 10 kinds of metal elements in Pure tea were K>Ca>Mg>Mn>Fe>Na>Cu> Zn>Cr>Ni.The recoveries of standard addition of various experimental elements were 98.56%-103.02%.And their relative standard deviation were 1.07%-2.97%,with the accuracy and precision according to the requirements.[Conclusion] Determination of metal element contents in Pure tea by FAAS was feasible.

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