Determination of Thirteen Chemical Elements in Edible Ink by ICP-MS
摘 要
采用微波消解-电感耦合等离子体质谱法测定可食性油墨中的铬、砷、硒、镍、铁、锰、铜、铅、镉、锑、锌、钡和铝等13种化学元素。以硝酸-过氧化氢(3+2)混合液为消解剂对样品进行微波消解,以铋、锗、钪和铟作为内标消除基体干扰,采用碰撞/反应池技术和干扰校正公式消除质谱干扰。各元素的质量浓度在一定范围内与其对应的信号强度呈线性关系,相关系数在0.999 1~0.999 9之间,方法的检出限(3s/k)在0.003~2 mg·kg-1之间。加标回收率在80.0%~110%之间,测定结果的相对标准偏差(n=7)在2.3%~7.3%之间。
Abstract
ICP-MS with microwave digestion was applied to the determination of thirteen chemical elements in edible ink. After the samples were digested by microwave with a mixture of nitric acid and hydrogen peroxide (3+2), Cr, As, Se, Ni, Fe, Mn, Cu, Pb, Cd, Sb, Zn, Ba and Al in the samples were analyzed by using Bi, Ge, Sc and In as internal standard elements to eliminate the marrix interference, and by using collision/reaction cell technology and interference correction formula to eliminate the MS interference. Linear relationships were found between the signal intensity and the mass concentration of the thirteen elements in defined ranges with correlation coefficients in the range of 0.999 1-0.999 9, and the detection limits (3s/k) varied from 0.003 mg·kg-1 to 2 mg·kg-1. Recovery rates obtained by standard addition method were in the range of 80.0%-110% and RSDs (n=7) were in the range of 2.3%-7.3%.
中图分类号 O657.63 DOI 10.11973/lhjy-hx201703008
所属栏目 工作简报
基金项目 国家质检总局科技计划项目(2015IK060;2015IK075;2015IK260);中山市社会公益重大专项(2015B2295)
收稿日期 2016/2/8
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备注李浩洋(1978-),男,辽宁沈阳人,工程师,研究方向为食品与药品的检测。E-mail:13590719076@139.com
引用该论文: LI Hao-yang,LIU Gong-yuan,LI Yun-song,SUN Ke-qiang,XIONG Xing. Determination of Thirteen Chemical Elements in Edible Ink by ICP-MS[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2017, 53(3): 284~288
李浩洋,刘恭源,李云松,孙克强,熊幸. 电感耦合等离子体质谱法测定可食性油墨中的13种化学元素[J]. 理化检验-化学分册, 2017, 53(3): 284~288
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【5】QB 2930.2-2008油墨中某些有害元素的限量及其测定方法第2部分铅, 汞, 镉, 六价铬[S].
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【10】蒙华毅,梁书怀,吴祖军.碰撞反应池-电感耦合等离子体质谱法同时测定甘蔗中的9种重金属元素[J].理化检验-化学分册, 2015,51(9):920-923.
【11】邱丽,唐碧玉,古行乾,等.电感耦合等离子体质谱法测定铅锌尾矿矿渣中铅、铜、锌和镉[J].理化检验-化学分册, 2015,51(7):943-946.
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【13】李冰,胡静宇,赵墨田.碰撞/反应池ICP-MS性能及应用进展[J].质谱学报, 2010,31(1):1-11.
【14】刘虎生,邵宏翔.电感耦合等离子体质谱技术与应用[M].北京:化学工业出版社, 2005.
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【16】许萍,陈铭学,牟仁祥,等.ICP-MS混合模式测定植物性农产品中9种痕量元素[J].分析测试学报, 2011,30(10):1138-1142.
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