枣中微量硒的原子荧光光谱法分析  

Atomic Fluorescence Spectrometric Determination of Trace Selenium in Chinese Date

作　　者：张福维[1] 侯冬岩[1] 回瑞华[1] 

机构地区：[1]鞍山师范学院化学系,辽宁鞍山114007

出　　处：《食品科学》2009年第12期144-146,共3页Food Science

基　　金：辽宁省教育厅科学技术基金项目(20331079)

摘　　要：采用原子荧光光谱法对枣中硒的含量进行分析,确定最佳测定条件。结果表明:硒的检出限为0.57ng/ml,线性范围为1.0～32.0ng/ml,回收率为99.0%～106.3%,变异系数小于1.71%。An atomic fluorescence spectrometric method was developed to determine trace selenium in Chinese date by taking 10% HCI solution as the current-carrying solution, selecting 2.0% potassium borohydride solution to enhance fluorescence intensity, and eliminating the disturbance of Pb^2＋, Cu^2＋ and Ag^＋ by enrichment with mercapto cotton and masking with thiourea- ascorbic acid. Results showed that the linear range and detection limit were 1.0 - 32.0 ng/ml and 0.57 ng/ml, respectively; the recovery varied from 99.0% to 106.3% and the RSD was lower than 1.71%.

关 键 词：枣 硒 原子荧光法 

分 类 号：TS207.3[轻工技术与工程—食品科学]