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
ICP-AES Determination of Specific Migration Elements in Alcoholic Food Simulants with Organic Direct Injection
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0.30 L·min-1,冷却气流量为13 L·min-1,辅助气流量为1.0 L·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0.6~7.8 μg·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%.
有机直接进样
醇系食品模拟物
ICP-AES
Organic direct injection
Alcoholic food simulants
Abstract
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 0.30 L·min-1,cooling gas flow was 13 L·min-1,and assistant gas flow was 1.0 L·min-1 in system of organic direct injection.Linear relationships between values of emission intensity and mass concentration of the 7 elements were kept in definite ranges.Detection limits (3s) found were ranged from 0.6 to 7.8 μg·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%.
中图分类号 O657.31 DOI 10.11973/lhjy-hx201508008
所属栏目 工作简报
基金项目 广东检验检疫局科技项目(2013GDK11);国家质检总局科研项目(2010IK038)
收稿日期 2014/8/17
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备注杨蓓(1982-),女,河南安阳人,工程师,研究方向为食品接触材料的检测.
引用该论文: YANG Bei,XIAO Da-hui,LI Han,HUANG Jin-yu,LIANG Shu-hua,LI Zheng-jun,ZHENG Jian-guo. ICP-AES Determination of Specific Migration Elements in Alcoholic Food Simulants with Organic Direct Injection[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2015, 51(8): 1084～1086
杨蓓,萧达辉,李涵,黄金宇,梁淑华,李政军,郑建国. 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[J]. 理化检验－化学分册, 2015, 51(8): 1084～1086
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参考文献
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【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．
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【6】EN 13130-1:2004Materials 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]．
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