摘要: 用火焰原子吸收光谱法对川东獐牙菜中K, Ca, Na, Mg, Fe, Zn, Mn和Cu八种微量元素进行了分析测定。结果显示,用HNO3-HClO4(5∶1)混酸作消化液处理样品,精密度和回收率较好。在选定的实验条件下,川东獐牙菜各元素间相互不干扰,可在一份样品液中进行八种元素的分别测定。川东獐牙菜中含有较丰富的K,Ca和Na, 以及Mg和Zn,其含量K>Ca>Mg>Na>Zn>Fe>Cu>Mn。方法的检出限均小于0.097 μg·mL-1,RSD≤2.34%(n=8),加标回收率89.32%~106.65%。
关键词:火焰原子吸收光谱法;川东獐牙菜;微量元素
Abstract:The effects of different sample digestives on the determination of Swertia davidii Franch are compared. Eight trace elements in the Swertia davidii Franch were determined by flame atomic absorption spectrometry. The result shows that the RSD and recovery are better if the Swertia davidii Franch was digested with HNO3-HClO4(5∶1) mixed acid. The experimental results show that the detection limits were all smaller than 0.097 μg·mL-1,the RSDs (n=8) all smaller than 2.34%, and the addition standard recovery (ASR)(n=8) was 89.32%-106.65% for all the elements.
Key words:Flame atomic absorption spectrometry;Swertia davidii Franch;Trace elements
李涛1,王元忠2,虞泓2*,曹玉娟1,张晶晶1,刘琴1. 火焰原子吸收光谱法测定中草药川东獐牙菜中的八种微量元素[J]. 光谱学与光谱分析, 2007, 27(12): 2598-2600.
LI Tao1,WANG Yuan-zhong2,YU Hong2,3*,CAO Yu-juan1,ZHANG Jing-jing1,LIU Qin1. Determination of Eight Trace Elements in the Swertia Davidii Franch by Flame Atomic Absorption Spectrometry. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(12): 2598-2600.
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