锡精矿中氟的测定新方法  

Determination of fluorin in the stannum concentrates by ion-selective electrode method

作　　者：孙红英[1] 戴凤英[1] 

机构地区：[1]广州有色金属研究院分析测试中心,广东广州510651

出　　处：《土壤与环境》2002年第4期379-382,共4页Soil and Environmental Sciences

基　　金：广东省科学基金重点项目(010873)

摘　　要：研究了柠檬酸钠-硝酸钾-三乙醇胺体系应用于锡精矿中氟量的测定方法,讨论了该体系测定时pH范围、TISAB用量、锡量、铝量及其他共存元素的影响。该方法测定的标准偏差小于0.02%,回收率为98%～101%。the fluorin in the stannum concentrates was determined by the ion-selective electrde method in the system of sodium cirate, potassium nitrate and tri-alcoholic amine. The effects of pH, TISAB addition amount, stannum, aluminum and other co-exist elements were discussed. The results show that standard deviation is less than 0.02% and recovery ratio is in the range of98%~101%.

关 键 词：锡精矿 氟 测定 离子选择电极法 

分 类 号：P575[天文地球—矿物学]