微波消解-电感耦合等离子体质谱法测定纸质食品接触材料中8种重金属元素

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Determination of 8 Heavy Metal Elements in Paper-Based Food Contact Materials by Microwave Digestion-Inductively Coupled Plasma Mass Spectrometry

WANGZijian，GONGLitong，LI Qian （Daxing Center for Disease Control and Prevention， Beijing 10260o， China）

Abstract： Objective： Establishment of microwave digestion-inductively coupled plasma mas spectrometry for the deteminationofeighthavymetalelements （lead，cadmium，arsenic，mercury，nickel，obium，homum，nd thallum） in paper food contact material.Method： Paper food contact material samples were digested and weighed by a microwave digestion apparatus and measured using inductively coupled plasma mass spectrometry. Result： Chromium， nickel， lead and barium were between 0μg⋅L-1 and 100.00μg⋅L-1 ，cadmium， arsenic， and antimony were between 0μg⋅L-1 and 20.0μg⋅L-1 ，and mercury was well within the range of 0μg⋅L-1 to 2.00μg⋅L-1 . The relative standard deviationwasbetween 1.41% and 4.54% ；therecoverywasbetween 75.1% and 114.5% Conclusion： This method is simple，rapid，accurate，and hashighsensitivityand precision.Itis suitable forthedeterminationof eight kinds of heavy metal elements in paper contact materials.

Keywords： paper food contact material; heavy metal elements; inductively coupled plasma massspectrometry

纸质食品接触材料具有印刷效果好、外形美观漂亮、易回收、环境污染少等优点，便于食品的运输、贮藏和销售，在日常生活中越来越受到人们的青睐。（剩余2984字）