摘要
建立一种微波消解-连续光源原子吸收法快速测定枸杞果中金属元素的新方法。通过微波消解快速处理样品,用连续光源原子吸收法同时顺序测定枸杞果中的铁、锌、铜、锰、镉、铅6种金属元素,并对仪器使用条件、金属元素含量、精密度、检出限、回收率等进行研究。结果表明:方法检出限为0.006 07 0～0.04975μg/L,RSD为1.5%～5.0%,回收率为86.68%～111.7%。该法用于枸杞中6种金属元素的同时顺序测定,具有快速、简便、成本低廉等特点,分析结果令人满意。
A new rapid method was established to determine metal elements in medlar fruit by microwave digestion and continuum source atomic absorption spectrometry.Samples were subjected to microwave digestion before simultaneous determination of six metal elements,including iron,zinc,copper,manganese,cadmium and lead.The established method presented a limit of detection ranging from 0.006070 to 0.04975 μg/L.The precision RSDs were between 1.5% and 5.0%（n = 12）.The mean spike recoveries for the six metal elements ranged from 86.68% to 111.7%（n = 6）.This method has been used to simultaneously determine iron,zinc,copper,manganese,cadmium and lead in medlar fruit with the benefits of rapidity,simplicity and low cost and satisfying results.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2011年第16期229-232,共4页
Food Science
基金
河南省重点学科建设基金资助项目(10466-X-082301)
关键词
枸杞
金属元素
微波消解
连续光源原子吸收法
medlar fruit
metal elements
microwave digestion
continuum source atomic absorption spectrometry
