随着人们生活水平的提高,食品中的重金属的质控和超标问题逐渐得到了人们的重视.生活中的部分污染元素间接的进入了人体,极大地危害了人类的身体健康.由于我国工业发展较快,食品重金属超标的现象越来越常见,在此背景下,只有不断对食品重金属检测技术进行研究,灵活应用各种检测方法,才可以更好地保障食品安全,降低食品污染造成的危害.本文对我国食品重金属污染的现状进行了简述,并结合常用的重金属元素检测方法,对食品中重金属元素检测方法进行了探究.

Objective To determine the total arsenic(As) in foods.Method The samples were digested by microwave,and analyzed by Zeeman graphite furnace atomic absorption spectrometry.The influences of program of microwave digestion and the conditions of spectrum were discussed.Results The samples were digested for 30 minutes at the highest temperature of 180 ℃,and palladium nitrate was used as matrix modifier,while ashing temperature and atomization temperature were 1?100 ℃ and 2?600 ℃,respectively.The linear range of As was 0～0.100 μg/L and correlation coefficient was 0.999?2.The detection limit was 0.52 μg,and the recovery ranged from 85% to 95%.Conclusion The method may be accurate,fast and economic.