微波高压消解-火焰原子吸收分光光度法测定茶叶中微量元素  

Determination of trace elements in tea using FAAS

作　　者：黄森科[1] 黄立漳[2] 

机构地区：[1]漳州师范学院化学系,福建漳州363000 [2]福州大学化学化工学院,福建福州350002

出　　处：《漳州师范学院学报（自然科学版）》2005年第4期54-57,共4页Journal of ZhangZhou Teachers College（Natural Science)

摘　　要：本文提出微波高压消解-火焰原子吸收光谱法测定茶叶中痕量铜、锌、铁和锰的方法.该方法检出限为1.0×10-9g/mL的Cu2+、Zn2+、Mn2+和5.0×10-9g/mL Fe3+.Mn2+、Fe3+Cu2+和Zn2+的含量分别在2.000～10.000、0.500～2.500、0.100～0.500和0.300～1.500μg/mL范围内符合比尔定律,相关系数为0.9996～0.9999.此法用于茶叶中铜、锌、铁和锰含量的测定,结果令人满意.An advanced microwave sample digestion method is described for the determination trace elements of Cu , Zn, Fe, Mn in different part of the lentinus edodes and A-groeybe chaxingx sample by flame atomic absorption spectrometry to reveal the relation between the curative effect of tea-leaf and the trace elements. The linear dynamic range of this method is 2.000- 10.000, 0.500- 2.500, 0.100 ～ 0.500（Mn^2＋, Fe^3＋ Cu^2＋） and 0.300 ～ 1.500（Zn^2＋）μg/mL according to Beer Law with a detection limit （L.D.） of 1.0×10^9 （Cu^2＋, Zn^2＋, Mn^2＋） and 5.0×10^9g/mL（Fe^3＋）, respectively.The proposed method was proved to the simple rapid,accurate and reliable had been applied to the analysis of the samples with satisfactory results.

关 键 词：铜 锌 铁和锰 微波高压消解 火焰原子吸收法 茶叶 

分 类 号：O657.31[理学—分析化学]