摘要
采用电感耦合等离子体质谱法同时测定铝塑复合食品包装容器中的9种重金属(铅、镍、镉、铬、铜、砷、锰、锌、钛)。该方法的检出限为0.01~1.62μg/kg,定量限为0.03~5.35μg/kg,线性良好,相关系数均不小于0.99;在3个水平(20、50、100μg/kg)进行添加实验,加标回收率在82.6%~119.3%之间,相对标准偏差在0.1%~12.3%之间。该方法快速、简便,具有较好的准确度和精密度,适合于铝塑复合食品包装中的重金属检测。
A method for the determination of nine heavy metals including lead, nickel, cadmium, chromium, copper, arsenic, manganese, zinc, and titanium in aluminum-plastic composite packaging by inductively coupled plasma mass spectrometry(ICP-MS) has been developed. The limits of detection(LODs) were between 0.01 and 1.62 μg/kg and the limits of quantitation(LOQs) were between 0.03 and 5.35 μg/kg. Good linearity with correlation coefficients ≥ 0.99 was obtained. The recoveries ranged from 82.6% to 119.3% with relative standard deviations(RSDs) of 0.1%–12.3% at three spiked concentration levels(20, 50, and 100 μg/kg). The method is rapid, simple, and has good accuracy and precision. It is suitable for the determination of heavy metals in aluminum-plastic composite packaging.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2015年第18期186-189,共4页
Food Science
基金
国家质检总局科技计划项目(2014IK142)
山西省社会发展科技攻关项目(20130313028-3)
关键词
电感耦合等离子体质谱法
食品包装
重金属
inductively coupled plasma mass spectrometry(ICP-MS)
food packaging
heavy metal