火焰原子吸收法测定食用仙人掌中微量元素含量

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摘要：用灰化法溶解试样，配制混合标准系列溶液，加入LaCl₃和CsCl消除相关干扰，采用空气-乙炔火焰原子吸收法在同一试液中测定10种微量元素含量。建立了优化的仪器测定条件,方法简便、准确。结果表明，食用仙人掌中含Mg，K，Ca 为13～47 mg.g^-1;Zn，Mn，Fe，Na为108～243 μg.g^-1, Cu为34.8 μg.g^-1;Ni和Sr为9.8～11.7 μg.g^-1，其中Mg，K，Ca，Zn，Mn，Fe，Na，Cu的含量均显著高于胡萝卜中含量。

关键词：原子吸收;仙人掌;微量元素

Abstract：The contents of 10 trace elements in edible cactus were determined by air-acetylene flame atomic absorption spectrometry. The sample was dissolved by ashing method. The experiment conditions were optimized by preparing mixed standard solution of these elements and adding LaCl₃ and CsCl for interfering complements. The results show that the contents of following elements in the cactus are: 13-47 mg·g^-1 for Mg，K and Ca;108-243 μg·g^-1 for Zn，Mn，Fe and Na; 34.8 μg·g^-1 for Cu，and 9.8-11.7 μg·g^-1 for Ni, Sr;and the contents of Mg，K，Ca，Zn，Mn，Fe，Na and Cu are higher than those in carrot.

Key words：Atomic absorption spectrometry;Cactus;Trace element

收稿日期: 2005-05-18 修订日期: 2005-08-22

中图分类号:

O657.3

通讯作者: 李桂华

引用本文:

李桂华，刘军深，王玉宝，陈玉静. 火焰原子吸收法测定食用仙人掌中微量元素含量[J]. 光谱学与光谱分析, 2005, 25(12): 2079-2081.
LI Gui-hua,LIU Jun-shen,WANG Yu-bao,CHEN Yu-jing. Determination of Trace Elements in Edible Cactus by Atomic Absorption Spectrometry . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(12): 2079-2081.

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https://www.gpxygpfx.com/CN/Y2005/V25/I12/2079