有机直接进样-电感耦合等离子体原子发射光谱法直接测定醇系食品模拟物中特定元素的迁移量
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摘要
采用有机直接进样-电感耦合等离子体原子发射光谱法直接测定醇系食品模拟物中特定元素钡、钴、铜、铁、锰、锌和锂的迁移量。有机进样系统的射频功率为1 350 W,雾化气流量为0.30L·min-1,冷却气流量为13L·min-1,辅助气流量为1.0L·min-1。7种元素在一定的质量浓度范围内与其发射强度呈线性关系,方法的检出限(3s)在0.6~7.8μg·L-1之间。加标回收率在98.2%~107%之间,测定值的相对标准偏差(n=7)小于2.0%。
ICP-AES was applied to the determination of specific migration elements,i.e.Ba,Co,Cu,Fe,Mn,Zn,and Li in alcoholic food simulants with organic direct injection.RF power was 1 350 W,nebulize gas flow was 0.30L·min-1,cooling gas flow was 13L·min-1,and assistant gas flow was 1.0L·min-1 in system of organic direct injection.Linear relationships between values of emission intensity and mass concentration of the 7elements were kept in definite ranges.Detection limits(3s)found were ranged from 0.6to 7.8μg·L-1.Values of recovery found by standard addition method were in the range of 98.2%-107%,and values of RSD′s(n=7)less than 2.0%.
ICP-AES was applied to the determination of specific migration elements,i.e.Ba,Co,Cu,Fe,Mn,Zn,and Li in alcoholic food simulants with organic direct injection.RF power was 1 350 W,nebulize gas flow was 0.30L·min-1,cooling gas flow was 13L·min-1,and assistant gas flow was 1.0L·min-1 in system of organic direct injection.Linear relationships between values of emission intensity and mass concentration of the 7elements were kept in definite ranges.Detection limits(3s)found were ranged from 0.6to 7.8μg·L-1.Values of recovery found by standard addition method were in the range of 98.2%-107%,and values of RSD′s(n=7)less than 2.0%.
引文
[1]龚越飞,袁晓林,王正林.塑料包装材料化学迁移机理及影响因素探讨[J].广州化工,2010,38(5):132-133.
[2]鲁丹,赵珊红,鲍晓霞,等.端视ICP-AES法测定食品用塑料包装容器在四种食品模拟物中有害元素迁移量[J].食品科技,2012,37(1):288-292.
[3]鲁丹,谢彬彬,越珊红,等.电感耦合等离子体原子发射光谱法测定橡胶和塑料制品中高关注物质含钴、砷、铬、锡、铅的量[J].理化检验-化学分册,2013,49(9):1046-1049.
[4]张东雷,李鑫,张越,等.微波消解-电感耦合等离子体原子发射光谱法测定食品塑料包装材料中二氧化钛[J].理化检验-化学分册,2011,47(3):344-345.
[5]方邢有,路东淇,马青,等.食品接触材料高分子材料中钡、钴、铜、铁、锂、锰和锌的迁移量测定[J].包装工程,2012(19):127-129.
[6]EN 13130-1:2004 Materials and articles in contact with foodstuffs-Plastics substances subject to limitation-Part 1:guide to test methods for the specific migration of substances from plastics to foods and food simulants and the determination of substances in plastics and the selection of conditions of exposure to food simulants[S].
[7]谯斌宗,杨元.电感耦合等离子体原子发射光谱法分析中有机溶剂效应[J].理化检验-化学分册,2008,44(11):1124-1128.
[2]鲁丹,赵珊红,鲍晓霞,等.端视ICP-AES法测定食品用塑料包装容器在四种食品模拟物中有害元素迁移量[J].食品科技,2012,37(1):288-292.
[3]鲁丹,谢彬彬,越珊红,等.电感耦合等离子体原子发射光谱法测定橡胶和塑料制品中高关注物质含钴、砷、铬、锡、铅的量[J].理化检验-化学分册,2013,49(9):1046-1049.
[4]张东雷,李鑫,张越,等.微波消解-电感耦合等离子体原子发射光谱法测定食品塑料包装材料中二氧化钛[J].理化检验-化学分册,2011,47(3):344-345.
[5]方邢有,路东淇,马青,等.食品接触材料高分子材料中钡、钴、铜、铁、锂、锰和锌的迁移量测定[J].包装工程,2012(19):127-129.
[6]EN 13130-1:2004 Materials and articles in contact with foodstuffs-Plastics substances subject to limitation-Part 1:guide to test methods for the specific migration of substances from plastics to foods and food simulants and the determination of substances in plastics and the selection of conditions of exposure to food simulants[S].
[7]谯斌宗,杨元.电感耦合等离子体原子发射光谱法分析中有机溶剂效应[J].理化检验-化学分册,2008,44(11):1124-1128.