富硒食品中微量元素分析
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摘要
建立电感耦合等离子体质谱法(ICP-MS)测定富硒食品中多种微量元素,选取富硒食品和保健品,使用微波消解法消化样品,ICP-MS同时测定铝、铬、锰、铁、镍、铜、锌、砷、硒、镉、锡、锑、铊、铅含量。方法表明在较大浓度范围内(0～400μg/L)线性关系良好,配合使用微波消解,有效降低样品损耗,对三个不同加标浓度测定回收率较高,方法简单易行,准确度高。比较富硒大米和普通大米发现硒元素、重金属及其它有益元素元素含量存在差异。天然富硒食品中,小米和紫薯硒含量较高,表明这两种农作物具有较强的富集能力。
To establish a method for determination of trace minerals in selenium enriched pro-ducts by inductively coupled plasma mass spectrometry( ICP-MS). The selenium enriched agr-icultural and health care products were disposed by microwave digestion,the method of ICP-MS was used to determinate content of aluminum,chromium,manganese,iron,nickel,copper,zinc,arsenic,selenium,cadmium,tin,antimony,thallium and lead. The method showed good linear correlation( 0 ～ 400 μg/L) and recoveries with microwave digestion effectively decreased wastage. Detection process could be easily operated with high accuracy. The content of sele-nium,beneficial and heavy metal minerals were different compared with selenium enriched a-nd common rice. In agricultural products,content of selenium is obvious in millet and purple potato which certified the favourable enrichment capacity.
To establish a method for determination of trace minerals in selenium enriched pro-ducts by inductively coupled plasma mass spectrometry( ICP-MS). The selenium enriched agr-icultural and health care products were disposed by microwave digestion,the method of ICP-MS was used to determinate content of aluminum,chromium,manganese,iron,nickel,copper,zinc,arsenic,selenium,cadmium,tin,antimony,thallium and lead. The method showed good linear correlation( 0 ～ 400 μg/L) and recoveries with microwave digestion effectively decreased wastage. Detection process could be easily operated with high accuracy. The content of sele-nium,beneficial and heavy metal minerals were different compared with selenium enriched a-nd common rice. In agricultural products,content of selenium is obvious in millet and purple potato which certified the favourable enrichment capacity.
引文
[1]钟辉.硒的生理功能及富硒强化食品的研究进展[J].食品安全导刊,2017,(12):65
[2]HATFIELD D L,CARLSON B A,TSUJI P A,et al.Chapter 38-Selenium and Cancer,In Molecular,Genetic,and Nutritional Aspects of Major and Trace Minerals[J].edited by James F.Collins,Academic Press,Boston,2017,Pages 463-473.
[3]CHENG W H and LEI X G,Chapter 37-Selenium:Basic Nutritional Aspects,In Molecular,Genetic,and Nutritional Aspects of Major and Trace Minerals[J].edited by James F.Collins,Academic Press,Boston,2017,Pages 449-461.
[4]娄兴丹,张根林,叶邦策.高富硒酵母的筛选及富硒强化研究[J/OL].生物技术通报,1-5(2017-09-29).
[5]梁丛丛,孙宇杰,胡治铭,等.富硒益生菌的筛选及其富硒条件的优化[J].食品与生物技术学报,2016,35(6):667-671.
[6]RAYMAN M P.Selenium and human health[J].The Lancet,2012,379:1256-1268.
[7]国家食品药品监督管理总局,食品安全国家标准食品中污染物限量GB 2762-2017[S].2017.
[8]AHMED M,HUI Y,Chin,Y H,GUO X X,et al.Microwave assisted digestion followed by ICP-MS for determination of trace metals in atmospheric and lake ecosystem[J].Journal of Environmental Sciences,2017,55(05):1-10.
[9]BORA T,AKSOY,TUNAY Z,et al.Determination of trace elements in illicit spice samples by using ICP-MS[J].Microchemical Journal,2015,123:179-184.
[10]肖方正,刘曲滨.富硒酵母的研究开发与应用[J].广东微量元素科学,2001,8(8):7-10.
[2]HATFIELD D L,CARLSON B A,TSUJI P A,et al.Chapter 38-Selenium and Cancer,In Molecular,Genetic,and Nutritional Aspects of Major and Trace Minerals[J].edited by James F.Collins,Academic Press,Boston,2017,Pages 463-473.
[3]CHENG W H and LEI X G,Chapter 37-Selenium:Basic Nutritional Aspects,In Molecular,Genetic,and Nutritional Aspects of Major and Trace Minerals[J].edited by James F.Collins,Academic Press,Boston,2017,Pages 449-461.
[4]娄兴丹,张根林,叶邦策.高富硒酵母的筛选及富硒强化研究[J/OL].生物技术通报,1-5(2017-09-29).
[5]梁丛丛,孙宇杰,胡治铭,等.富硒益生菌的筛选及其富硒条件的优化[J].食品与生物技术学报,2016,35(6):667-671.
[6]RAYMAN M P.Selenium and human health[J].The Lancet,2012,379:1256-1268.
[7]国家食品药品监督管理总局,食品安全国家标准食品中污染物限量GB 2762-2017[S].2017.
[8]AHMED M,HUI Y,Chin,Y H,GUO X X,et al.Microwave assisted digestion followed by ICP-MS for determination of trace metals in atmospheric and lake ecosystem[J].Journal of Environmental Sciences,2017,55(05):1-10.
[9]BORA T,AKSOY,TUNAY Z,et al.Determination of trace elements in illicit spice samples by using ICP-MS[J].Microchemical Journal,2015,123:179-184.
[10]肖方正,刘曲滨.富硒酵母的研究开发与应用[J].广东微量元素科学,2001,8(8):7-10.