摘要
为建立氢化物发生 -原子荧光光谱法同时测定保健食品中砷、汞的方法 ,研究了酸度、硼氢化钾浓度、载气流量、灯电流以及原子化器高度等因素对测定的影响 ,在最佳条件下 ,砷、汞的检出限分别为 0 .0 98μg/L、0 .0 0 7μg/L。比较了湿法消化、微波消化两种试样前处理方法回收率的差异 ,砷的两种试样前处理方法的回收率分别为 92 .3%～ 96.5%和 98.4 %～ 10 4 .1% ,汞分别为 76.1%～86.2 %和 97.0 %～ 10 4 .3% 。
For developing the determination method of As and Hg in health food at the same time by HG (hydride generation)-AFS (atomic fluorescence spectroscopy), operation conditions such as acidity, NaBH 4 concentration, carrier flow rate, currents of lamp and height of atomic oven which affected the determination have been optimized. The detection limits are 0.098μg/L for As and 0.007μg / L for Hg under the best conditions. There is difference of the recovery ratios between two kinds of processing methods of samples --wet digestion and microwave digestion. Arsenic's recovery ratios of the two kinds of digestion methods are 92.3-96.5% and 98.4-104.1%; mercury's recovery ratios of the two kinds of digestion methods are 76.1-86.2% and 97.0-104.3%. Author's address Han Hongwei, Institute of Food Safety Control and Inspection, Ministry of Health, Beijing 100021 PRC.
出处
《中国食品卫生杂志》
2000年第5期7-10,共4页
Chinese Journal of Food Hygiene
关键词
砷
汞
保健品
食品分析
光谱法
微波消化
Arsenic Mercury Dietary Supplements Food Analysis Spectrometry, Fluorescence
