高压罐消解ICP-AES法测定黑芝麻和白芝麻中多种微量元素
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摘要
采用HClO_4/HNO_3湿法高压罐消解样品,利用电感耦合等离子体-原子发射光谱法(ICP-AES)直接测定黑芝麻与白芝麻样品中K、Mg、Ca、Fe、Zn、Cu、Mn、Se、Sr9种微量元素的含量。通过正交试验分析确定最佳试验操作条件,方法的加标回收率在93.6%~109.2%之间,相对标准偏差RSD小于2.42%。试验结果证明,黑芝麻与白芝麻中均含对人体健康有益的K、Ca、Mg、Fe等多种微量元素,黑芝麻中多种微量元素含量高于白芝麻,说明黑芝麻的营养价值高于白芝麻,长期食用黑芝麻有益人体健康。该方法的灵敏度高,准确度和精密度好,结果令人满意。
The samples were digested by wet high pressure tank with HClO_4/HNO_3. The contents of 9 kinds of trace elements including K, Mg, Ca, Fe, Zn, Cu, Mn, Se and Sr in black sesame and white sesame seeds were directly determined by inductively coupled plasma-atomic emission spectrometry(ICP-AES). Experimental conditions were optimized through orthogonal experiments. The standard addition recovery of the method was between 93.6~109.2%, and the relative standard deviation was less than 2.42%. The results showed that the black sesame and white sesame contained K, Ca, Mg, Fe and other trace elements. The content of various trace elements of black sesame was higher than that of white sesame, which indicated that the nutritional value of black sesame was higher than that of white sesame. Long-term edible black sesame was beneficial to human health. The method had high sensitivity, accuracy and precision, and the result was satisfactory.
The samples were digested by wet high pressure tank with HClO_4/HNO_3. The contents of 9 kinds of trace elements including K, Mg, Ca, Fe, Zn, Cu, Mn, Se and Sr in black sesame and white sesame seeds were directly determined by inductively coupled plasma-atomic emission spectrometry(ICP-AES). Experimental conditions were optimized through orthogonal experiments. The standard addition recovery of the method was between 93.6~109.2%, and the relative standard deviation was less than 2.42%. The results showed that the black sesame and white sesame contained K, Ca, Mg, Fe and other trace elements. The content of various trace elements of black sesame was higher than that of white sesame, which indicated that the nutritional value of black sesame was higher than that of white sesame. Long-term edible black sesame was beneficial to human health. The method had high sensitivity, accuracy and precision, and the result was satisfactory.
引文
[1]张海洋,汪学德.芝麻加工技术[M].郑州:河南人民出版社,2012.
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[6]韩彬,胡广林,李平,等.中药材黑芝麻中微量元素分析及其水煎液中汞元素的脱除[J].微量元素与健康研究,2008,25(6):26-28.
[7]耿薇,古元梓,魏永生,等.微波消解-ICP-OES法测定白芝麻中的18种矿质元素[J].化工时刊,2012,26(3):32-34.
[8]李崇玮,卫晋波,赖长生,等.白芝麻与黑芝麻硒的含量对比与膳食推荐[J].佛山科学技术学院学报(自然科学版),2016,34(5):66-70.
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[11]张京京,王莹,赵丹,等.应用ICP-AES同时测定5种花草茶的微量元素[J].沈阳师范大学学报(自然科学版),2009,27(2):224-226.
[12]陈卫卫,王勤.舌尖上的黑营养-芝麻[M].北京:中国中医药出版社,2013.
[13]宁坚刚,魏永生,耿薇.全谱直读电感耦合等离子体发射光谱法测定青海蕨麻中矿质元素[J].食品科学,2012,37(10):253-256.
[14]辛士刚,王莹,张轲,等.微波消解ICP-AES测定黑花生和红花生的微量元素含量[J].光谱实验室,2009,26(6):1527-1530.
[2]杨克敌,微量元素与健康[M].北京:科学出版社,2003.
[3]钟秀倩,钟俊辉.微量元素与人体健康[J].现代预防医学,2007,34(1):61-63.
[4]颜世明,李增禧,熊丽萍.微量元素的生理作用与体内平衡[J].广东微量元素科学,2002,9(9):1-48.
[5]沈梅.黑芝麻和白芝麻中微量元素含量的比较研究[J].中国卫生检验杂志,2007,17(12):2309-2310.
[6]韩彬,胡广林,李平,等.中药材黑芝麻中微量元素分析及其水煎液中汞元素的脱除[J].微量元素与健康研究,2008,25(6):26-28.
[7]耿薇,古元梓,魏永生,等.微波消解-ICP-OES法测定白芝麻中的18种矿质元素[J].化工时刊,2012,26(3):32-34.
[8]李崇玮,卫晋波,赖长生,等.白芝麻与黑芝麻硒的含量对比与膳食推荐[J].佛山科学技术学院学报(自然科学版),2016,34(5):66-70.
[9]王莹,刘忠和,康万利,等.百香果中矿物元素分析[J].食品科学,2009,30(22):328-330.
[10]王莹,辛士刚.正交实验在ICP-AES法测定野菜中微量元素中的应用[J].光谱学与光谱分析,2004,24(10):1253-1256.
[11]张京京,王莹,赵丹,等.应用ICP-AES同时测定5种花草茶的微量元素[J].沈阳师范大学学报(自然科学版),2009,27(2):224-226.
[12]陈卫卫,王勤.舌尖上的黑营养-芝麻[M].北京:中国中医药出版社,2013.
[13]宁坚刚,魏永生,耿薇.全谱直读电感耦合等离子体发射光谱法测定青海蕨麻中矿质元素[J].食品科学,2012,37(10):253-256.
[14]辛士刚,王莹,张轲,等.微波消解ICP-AES测定黑花生和红花生的微量元素含量[J].光谱实验室,2009,26(6):1527-1530.