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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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微波消解-电感耦合等离子体质谱法同时测定食品中的主、微量元素
DOI: 10.11895/j.issn.0253-3820.140562, PP. 1706-1709
Keywords: 电感耦合等离子体质谱,微波消解,食品,主、微量元素
Abstract:
采用微波消解食品样品后直接进行分析,调节动态反应池DRC(Dynamicreactioncell)的电压参数(Rpa)而不通入气体,选择性抑制高浓度元素K,Na,Ca,Mg,Al的信号强度,同时应用DRC技术有效的消除了m/z75处40Ar35Cl+对砷测定的干扰,建立了电感耦合等离子体质谱法同时测定食品中K,Na,Ca,Mg,Al,Cu,Zn,Pb,As,Mn共10种元素的分析方法.K,Na,Ca,Mg,Al的检出限为0.013~0.027mg/L;Cu,Pb,Zn,As,Mn的检出限为0.12~0.61μg/L.采用国家标准物质GBW10023(紫菜),GBW10015(菠菜),GBW10018(鸡肉),GBW10017(奶粉),GBW10019(苹果)和GBW10024(扇贝)进行方法验证,结果准确可信.本方法具有高通量,低成本,样品污染风险小的优点,能够对样品中高低含量的元素同时分析.
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