摘要
系统研究了五种食用色素在活性碳上的吸附性能和七种无机阴离子的洗脱行为，以及离子色谱淋洗条件，拟定了“离线”活性碳吸附预分离—离子色谱分析食用色素中无机阴离子的方法。该法所用预处理剂对色素的吸附量高，而无机阴离子易于洗脱，且价廉和容易获得。用于合成样的分析，回收率达９５％～１０４％，五次平行测定的相对标准偏差不超过４％，满足分析要求。
The adsorption character of five colorants and the elution behavior of seven inorganic anions on active carbon were systematically studied. The elution conditions of ion chromatography were optimized. The analytic method for seven inorganic anions in five colorants by active carbon preseparation-ion chromatograph was developed. Active carbon used as preseparation agent, from which the inorganic anions are easily eluted and has high adsorbance for the five colorants. In addition, it is cheap and easily got as well. The recoveries for the analysis of synthetic samples were 95%～104% and relative standard deviations were less than 4% (n=5) being satisfied for the analytic requirements.
出处
《食品工业科技》
CAS
CSCD
北大核心
1997年第4期80-83,共4页
Science and Technology of Food Industry
关键词
食用色素
无机阴离子
活性炭
预分离
离子色谱法
colorants
inorganic anion
ion chromatography
active carbon
preseparation
