总膳食研究中氟的测定方法  

The Method for the Determination of Fluoride in the Total Diet Study

作　　者：李筱薇[1] 朱丽[1] 周雪飞 高俊全[1] 

机构地区：[1]中国预防医学科学院营养与食品卫生研究所

出　　处：《卫生研究》1998年第1期66-68,共3页Journal of Hygiene Research

基　　金：国家自然科学基金

摘　　要：采用扩散—电极法测定样品中氟含量，本法检测限为氟１．０μｇ／ｇ（干样），样品的加标回收率为８５．０％～１０７．０％，相对标准偏差（ＲＳＤ）为４．５％～９．５％；同时测定标准参考物ＮＢＳ１５６６牡蛎粉的含量相当于原样的８７．９％～１０４．６％，ＲＳＤ为６．５％；含乙醇酒类样品的ＲＳＤ为３．１％。his paper reports a microdiffusion method using fluoride ion selective electrode for determination of fluoride contents in dietary samples.The method was suitable for the determination of fluoride in different dietary samples.It was a simple and fast method,and could be applied in large amount of sample analysis.The minimum detectable limit of this method was 10μg fluoride in 10g dry dietary sample.The range of fluoride recovery and RSD in this dietary samples were 850%～1070% and 45%～95% respectively.The fluoride content determined in the oyster tissue of NBS 1566 SRM was 879%～1046% of certified SRM,and RSD was 65%.The RSD of fluoride determination in alcohol drinks was 31%.

关 键 词：膳食 氟 测定 扩散电极法 

分 类 号：R155[医药卫生—营养与食品卫生学] TS207.5[医药卫生—公共卫生与预防医学]