示波极谱法测定地质样品中痕量氟  

STUDY ON DETERMINATION OF TRACE FLUORINE IN GEOLOGICAL SAMPLES BY OSCILLOSCOPIC POLAROGRAPHY

作　　者：周俊明[1] 龚育[1] 程向红 汤志勇[2] 金泽祥[2] 

机构地区：[1]中国地质大学武汉管理干部学院化学系,武汉430030 [2]中国地质大学应用化学系

出　　处：《理化检验（化学分册）》1998年第10期455-456,共2页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：地矿部重点科技项目资助课题

摘　　要：提出了地质样品经半熔法分解后,8-羟基喹啉沉淀干扰组分,过量的8-羟基喹啉用四氯化碳萃取分离,在六次甲基四胺缓冲液中测定Ce(Ⅲ)-ALC-F^-络合吸附波。并对标准物质中F^-进行测定,其测定值与推荐值吻合。方法的RSD为5.6％,检出限为0.6μg·g^(-1)。A new oscilloscopic polarographic to determine trace fluorine in geological samples using Ce( I )-ALC-F^- system was established. The samples were decomposed by the semi-fusion and interfering components were separated by precipitation with 8-quinolinol. The linear range is 5×10^(-9)~9.5×10^(-8)?μ?g · g^(-1), The relative standard deviation is 5. 6%. The proposed method has been appied to determine F^- in standard samples with satisfactory results.

关 键 词：示波极谱法 氟 地质样品 分析 

分 类 号：P575.3[天文地球—矿物学] P575.4[天文地球—地质学]