电感耦合等离子体质谱法测定食品中的锡
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摘要
建立电感耦合等离子体质谱法测定食品中锡的方法。样品用浓硝酸冷消化后经微波消解,以纯水稀释定容消解液,选择分析目标物~(120)Sn、内标~(115)In上机测定。锡含量在0~50μg/L范围内与谱线强度线性良好,相关系数为0.999 8,检出限为0.018 mg/kg。对高、中、低3个浓度级别的样品溶液进行测定,测定结果的相对标准偏差分别为1.71%,2.42%,2.74%(n=6),样品加标回收率在98.5%~100.4%之间,该方法对实际样品的测定结果与国标法测定结果的相对偏差小于3.0%。该方法快速,干扰少,适合于食品中锡的测定。
A method for determining stannum in food by inductively coupled plasma–mass spectrometry was established. After cold digestion,the sample was digested by microwave,and the solution was diluted with pure water. Element analysis target ~(120)Sn and internal standard ~(115)In were selected for detection. The stannum content was linear with spectral line strength in the range of 0–50 μg/L, the correlation coefficient was 0.999 8. The detection limit was 0.018 mg/kg. The standard deviation of three levels detection results of sample solution were 1.71%,2.42%,2.74%(n=6), respectively. The standard addition recovery rate was in the range of 98.5%–100.4%. The relative deviation of actual sample determination results by the method and standard method was less than 3.0%. The method is quick, has less interference, it is suitable for the determination of stannum in food.
A method for determining stannum in food by inductively coupled plasma–mass spectrometry was established. After cold digestion,the sample was digested by microwave,and the solution was diluted with pure water. Element analysis target ~(120)Sn and internal standard ~(115)In were selected for detection. The stannum content was linear with spectral line strength in the range of 0–50 μg/L, the correlation coefficient was 0.999 8. The detection limit was 0.018 mg/kg. The standard deviation of three levels detection results of sample solution were 1.71%,2.42%,2.74%(n=6), respectively. The standard addition recovery rate was in the range of 98.5%–100.4%. The relative deviation of actual sample determination results by the method and standard method was less than 3.0%. The method is quick, has less interference, it is suitable for the determination of stannum in food.
引文
[1]史潜玉,刘立,柯润辉,等.ICP–MS在食品质量安全领域应用研究进展[J].食品发酵与工业,2012,38(12):118–123.
[2]张晶,李雪影,徐辉,等.电感耦合等离子体在食品分析检测中的应用[J].包装与食品机械,2014,32(5):62–66.
[3]叶剑芝,苏子鹏,杨春亮,等.微波消解–ICP–MS法测定果蔬罐头中的锡、铅、砷[C]//农产品质量安全与现代农业发展专家论坛论文集,2011:244–248.
[4]GB 5009.16–2014食品安全国家标准食品中锡的测定[S].
[5]刘伟,阎军,武刚.密闭微波样品消解原理及常识[J].现代科学仪器,2000(3):51–54.
[6]刘丽萍,张妮娜,张岚,等.电感藕合等离子体质谱法测定矿泉水中23种元素[J].质谱学报,2005,26(l):27–31.
[7]GB/T 5750.6–2006生活饮用水标准检验方法金属检验指标[S].
[8]肖亚兵,蔡国瑞,王伟.电感耦合等离子体质谱(ICP–MS)技术进展[J].食品研究与开发,2013,34(8):124–128.
[9]王秋泉,唐南南,杨利民.电感耦合等离子体质谱分析[J].中国科学(化学),2014,44(5):664–667.
[10]李俊婕,李启艳,于海英,等.微波消解–ICP–MS法同时测定鱼油类保健食品中6种微量元素[J].药学研究,2016,35(9):520–522.
[11]黄晓纯,刘昌弘,张军,等.ICP-MS测定蔬菜样品中重金属元素的两种微波消解前处理方法[J].岩矿测试,2013,32(3):415–418.
[12]封蓉芳,朱建丰,陈军.环形聚焦单模微波消解–ICP–MS法检测罐头食品中钒、铬、镍、镉、铅、砷、锰、铝、铜、锡[J].化学分析计量,2017,26(6):48–51.
[13]芮玉奎,余庆泉,金银花,等.应用ICP–MS快速测定葡萄酒中40种元素含量[J].光谱学与光谱分析,2008,27(6):1 403–1 405.
[14]梁旭霞,李敏,杨业,等.电感耦合等离子体质谱法测定矿泉水中的27种元素[J].华南预防医学,2005,31(5):15–19.
[15]王俊平,马晓星,方国臻,等.电感耦合等离子体质谱法测定饮用水中6种痕量重金属元素[J].光谱学与光谱分析,2010,30(10):2 827–2 829.
[16]王伟,江小明,杨永,等.电感耦合等离子体质谱法测定生活饮用水中7种金属元素[J].食品安全质量检测学报,2017,8(3):1 053–1 056.
[17]严冬,姚继军.动态反应池电感耦合等离子体质谱法分析膳食补充剂中的微量金属元素[J].岩矿测试,2010,29(2):117–118.
[18]彭荣飞,侯建荣,黄聪.ICP–MS直接测定酱油中Pb和As的研究[J].中国卫生检验杂志,2008,18(7):1 315–1 316.
[2]张晶,李雪影,徐辉,等.电感耦合等离子体在食品分析检测中的应用[J].包装与食品机械,2014,32(5):62–66.
[3]叶剑芝,苏子鹏,杨春亮,等.微波消解–ICP–MS法测定果蔬罐头中的锡、铅、砷[C]//农产品质量安全与现代农业发展专家论坛论文集,2011:244–248.
[4]GB 5009.16–2014食品安全国家标准食品中锡的测定[S].
[5]刘伟,阎军,武刚.密闭微波样品消解原理及常识[J].现代科学仪器,2000(3):51–54.
[6]刘丽萍,张妮娜,张岚,等.电感藕合等离子体质谱法测定矿泉水中23种元素[J].质谱学报,2005,26(l):27–31.
[7]GB/T 5750.6–2006生活饮用水标准检验方法金属检验指标[S].
[8]肖亚兵,蔡国瑞,王伟.电感耦合等离子体质谱(ICP–MS)技术进展[J].食品研究与开发,2013,34(8):124–128.
[9]王秋泉,唐南南,杨利民.电感耦合等离子体质谱分析[J].中国科学(化学),2014,44(5):664–667.
[10]李俊婕,李启艳,于海英,等.微波消解–ICP–MS法同时测定鱼油类保健食品中6种微量元素[J].药学研究,2016,35(9):520–522.
[11]黄晓纯,刘昌弘,张军,等.ICP-MS测定蔬菜样品中重金属元素的两种微波消解前处理方法[J].岩矿测试,2013,32(3):415–418.
[12]封蓉芳,朱建丰,陈军.环形聚焦单模微波消解–ICP–MS法检测罐头食品中钒、铬、镍、镉、铅、砷、锰、铝、铜、锡[J].化学分析计量,2017,26(6):48–51.
[13]芮玉奎,余庆泉,金银花,等.应用ICP–MS快速测定葡萄酒中40种元素含量[J].光谱学与光谱分析,2008,27(6):1 403–1 405.
[14]梁旭霞,李敏,杨业,等.电感耦合等离子体质谱法测定矿泉水中的27种元素[J].华南预防医学,2005,31(5):15–19.
[15]王俊平,马晓星,方国臻,等.电感耦合等离子体质谱法测定饮用水中6种痕量重金属元素[J].光谱学与光谱分析,2010,30(10):2 827–2 829.
[16]王伟,江小明,杨永,等.电感耦合等离子体质谱法测定生活饮用水中7种金属元素[J].食品安全质量检测学报,2017,8(3):1 053–1 056.
[17]严冬,姚继军.动态反应池电感耦合等离子体质谱法分析膳食补充剂中的微量金属元素[J].岩矿测试,2010,29(2):117–118.
[18]彭荣飞,侯建荣,黄聪.ICP–MS直接测定酱油中Pb和As的研究[J].中国卫生检验杂志,2008,18(7):1 315–1 316.