现代食品科技2017，Vol.33Issue(8)：276-281,275,7.DOI:10.13982/j.mfst.1673-9078.2017.8.040
微波消解-电感耦合等离子体质谱法同时测定一次性纸杯中7种重金属元素的残留量
Determination of Seven Heavy Metal Element Residues in Disposable Cups by Microwave Digestion-inductively Coupled Plasma Mass Spectrometry
摘要
Abstract
A method for the determination of seven heavy metal element residues (lead,chromium,nickel,arsenic,antimony,cadmium,and barium) in disposable paper cups was established using microwave digestion and inductively coupled plasma mass spectrometry (ICP-MS).Samples were digested by microwave digestion with nitric acid and hydrogen peroxide as the digestion solutions,and then analyzed with the kinetic energy discrimination model (KED) and an online intemal standard solution.The detection signal (counts per second,CPS) showed a good linear relationship with the content of seven heavy metal elements;the correlation coefficient R2 was＞0.9997,the recovery was in the range of 85.0％～112.2％,and the relative standard deviation (RSD) was less than 6.46％.This method was used to analyze the seven heavy metal elements in the national standard material GBW10045,and the results were consistent with the standard values.The method developed in this study is sensitive,rapid,and accurate,and it is suitable for the analysis and detection of seven trace heavy metal elements in disposable paper cups.关键词
一次性纸杯/重金属元素/微波消解/电感耦合等离子体质谱法/在线内标Key words
disposable paper cups/heavy metal elements/microwave digestion/inductively coupled plasma mass spectrometry/online internal standard solution引用本文复制引用
王志洪,石朝晖,蔡江帆,吴庆洁..微波消解-电感耦合等离子体质谱法同时测定一次性纸杯中7种重金属元素的残留量[J].现代食品科技,2017,33(8):276-281,275,7.基金项目
广西食品安全风险检测项目 （）
