微波消解-電感耦合等離子體質(zhì)譜法測定紙質(zhì)食品接觸材料中8種重金屬元素

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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

紙質(zhì)食品接觸材料具有印刷效果好、外形美觀漂亮、易回收、環(huán)境污染少等優(yōu)點，便于食品的運輸、貯藏和銷售，在日常生活中越來越受到人們的青睞。（剩余2984字）