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微波消解-HR-CS GFAAS法快速顺序测定秀珍菇中金属元素 被引量:3

Sequential Rapid Determination of Metallic Elements in Pleurotus geesteranus by Microwave Digestion-High Resolution Continuum Source Graphite Furnace Atomic Absorption Spectrophotometry
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摘要 建立微波消解-高分辨连续光源石墨炉原子吸收光谱法快速顺序测定秀珍菇中Cu、Cd、Pb、Mn和Al这5种金属元素的方法。通过选择合适的分析谱线和基体改进剂,有效地消除了干扰。在选定的工作条件下,测定秀珍菇中Cu、Cd、Pb、Mn、Al的含量分别为11.1、0.284、0.019、12.1、51.3μg/g,加标回收率分别为105.1%、94.4%、93.4%、95.8%、98.7%,仪器的检出限分别为1.22、0.077、1.53、0.614、1.54ng/mL,本法的精密度为2.2%~5.8%。该方法快速、准确、稳定、污染少,具有较高的实用价值。 An effective method was developed for sequential rapid determination of five metallic elements in Pleurotus geesteranus by microwave digestion-high resolution continuum source graphite furnace atomic absorption spectrophotometry(HR-CS-GF-AAS).Some potential interferences were eliminated effectively by using appropriate analytical spectral lines and matrix modifiers.Under the selected working conditions,the contents of Cu,Cd,Pb,Mn,Al in Pleurotus geesteranus were 11.1,0.284,0.019,12.1 μg/g and 51.3 μg/g,respectively and the average spike recoveries were 105.1%,94.4%,93.4%,95.8%,and 98.7%,respectively.The detection limits for the metallic elements were 1.22,0.077,1.53,0.614 ng/mL and 1.54 ng/mL,respectively.The precision relative standard deviations ranged from 2.2% to 5.8%.Therefore,this method was rapid,accurate,stable and less pollutive,thus having a high practical value.
出处 《食品科学》 EI CAS CSCD 北大核心 2013年第14期289-292,共4页 Food Science
关键词 微波消解 高分辨连续光源石墨炉原子吸收光谱法 秀珍菇 微量元素 microwave digestion high resolution continuum source graphite furnace atomic absorption spectrophotometry(HR-CS-GF-AAS) Pleurotus geesteranus metallic element
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