氟离子选择性电极-标准加入法测定葡萄酒中氟  

Determination of fluorine in wines by fluorion selective electrode analysis coupled with interior label

作　　者：张东霞[1] 乔元元 史宝明 白金源 ZHANG Dongxia;QIAO Yuanyuan;SHI Baoming;BAI Jinyuan(Department of Science,Xijing University,Xi’an 710123,China)

机构地区：[1]西京学院理学院,陕西西安710123

出　　处：《食品与发酵工业》2019年第6期215-218,共4页Food and Fermentation Industries

基　　金：陕西省教育厅科研项目(15JK2184)

摘　　要：目的在于建立一种准确简便的测定葡萄酒中氟含量的方法,评价葡萄酒消费中氟摄入量及其毒性风险,在葡萄酒微量元素监测方面推广应用。实验了不同总离子强度调节剂对测定结果的影响,对组成复杂的待测液酸度进行了优化选择。在最佳测试条件下,用氟离子选择性电极—标准加入法分析大众消费的红、白葡萄酒样品中氟含量,所分析的葡萄酒符合质量标准,其氟离子浓度均未超过国际葡萄与葡萄酒组织规定1mg/L的最大限度,相对标准偏差为1. 11%～4. 44%(n=6),平均回收率为95. 83%～106. 67%。The aim of this study was to establish a simple and accurate method to determine fluorine in wines,and to evaluate fluorine intake and risk of toxicity through wine consumption. The effects of total ionic strength adjustment butter( TISAB) on experiment results were investigated,and the acidity of complex test samples was optimized.For ion selective electrode measurement,the technique of standard addition was chosen. The results showed that the fluorine concentration in wines tested by this method all met the quality requirement(< 1 mg/L) specified by the International Organisation of Vine and Wine. The average recovery rate of fluorine from tested red and white wines ranged from 95. 83% to 106. 67%. The RSD ranged from 1. 11% to 4. 44%. The method can be used to monitor trace elements in wines.

关 键 词：氟离子选择性电极 标准加入法 葡萄酒 氟 

分 类 号：O657.1[理学—分析化学] TS262.6[理学—化学]