摘要
建立高分辨连续光源火焰原子吸收光谱法测定白豆蔻中Ca、Fe、Mg、Zn的方法。以微波消解作为样品的前处理方式，分析乙炔流量和燃烧器高度对测定结果的影响，通过实验分别确定测定Ca、Fe、Mg、Zn的最佳参数。在最佳参数条件下，测定白豆蔻中Ca、Fe、Mg、Zn的含量分别为7641、982、5367、87．7μg/g，加标回收率为97．9％-106．3％，精密度为1．1％～2．1％。该方法快速、准确、稳定、污染少，具有较高的实用价值，可为食品中多元素检测提供科学依据。
An effective method was developed for the determination of metal elements in Fructus Amomi Rotundus by high resolution-continuum source flame atomic absorption spectrometry. Samples were digested by microwave and the effects of acetylene flow rate and burner height on determination results were investigated. The optimum parameters were chosen by experiments. Under the optimum working conditions, the contents of Ca, Fe, Mg and Zn in Fructus Amomi Rotundus were determined to be 7 641,982, 5 367 and 87.7 μg/g, respectively. The recoveries for these metal elements from spiked samples were 97.9%-106.3%, with relative standard deviations of 1.1%-2.1%. Therefore, this is a rapid, accurate, stable and low- pollution method for determination of metal elements in food samples.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2014年第4期91-94,共4页
Food Science
基金
国家自然科学基金面上项目(31270577)
江苏省高校自然科学研究项目(12KJB550002)
江苏省省级科技创新与成果转化(重大科技支撑与自主创新)专项引导资金项目(BE2011644)
关键词
微波消解
高分辨
连续光源一火焰原子吸收光谱法
白豆蔻
金属元素
microwave digestion
high resolution-continuum source flame atomic absorption spectrometry （HR-CS FAAS）
Fructus Amomi Rotundus
metal elements
