电感耦合等离子体原子发射光谱分析食品营养强化剂中的痕量元素  

Analysis of trace elements in food fortificants with inductively coupled plasma optical emission spectrometry

作　　者：段建坤 曾爱民 杨永 朱有涛 唐立平 沈丽 

机构地区：[1]国家饮料及粮油制品质量监督检验中心(武汉产品质量监督检验所),武汉430043

出　　处：《食品科技》2011年第11期261-264,共4页Food Science and Technology

摘　　要：以电感耦合等离子体发射光谱(ICP-OES)作为检测手段分析了营养强化剂中的钙、钾、钠、铁、锌、锰、铅和砷等元素。研究了样品基体对于分析过程的影响,实验结果表明,有机强化剂浓度不超过20 g/L,无机强化剂中的无机金属元素含量不超过2 g/L时,可以认为基体没有影响。考察了不同的样品处理方式的优缺点。比较了校正曲线法(外标法)和基体匹配法两种定量分析方法,发现前者的分析性能更为优越。分析了6种强化剂中的钙、钾、钠、铁、锌、锰、铅和砷,加标回收结果满意。A simple and fast method was developed for the determination of Ca, K, Na, Fe, Zn, Mn, Pb and As in food fortificants by inductively coupled plasma optical emission spectrometry （ICP-OES）. The effect of the sample matrix was studied and the results showed that there was little matrix effect existing if the concentration of the organic food fortificants and inorganic metal ion in the sample solution were no more than 20 and 2 g/L, respectively. Three methods for sample pretreatment were investigated and compared. External standard and matrix matching methods were used for quantification of the analytes in the samples. It is found than the former showed better analytical performances. The proposed method was applied for the analysis of six food fortificants with satisfied recoveries.

关 键 词：营养强化剂 电感耦合等离子体原子发射光谱 基体效应 痕量元素 

分 类 号：TS207.3[轻工技术与工程—食品科学]