摘要
本文主要阐述用离子选择电极法[1]测定尾矿中的氟。试料以氢氧化钠熔融分解,用水浸出熔融物后过滤,使氟[2]与硅、铁、铜、铅等分离,然后在pH6.5~7.0的柠檬酸钠-三乙醇胺介质中,以饱和甘汞电极为参比电极,氟离子选择电极为指示电极,用电极电位仪测定氟,加标回收率101%~105%,适用于尾矿中氟的测定。
This article mainly elaborated by ion selective electrode method determination of fluorine in cig- arette. Sample decomposition with sodium hydroxide molten melt water leaching, filtering, so that the flu- orine and iron, copper, lead, separation, and then in pH6.5 - 7 sodium citrate triethanol amine medi- um, using a saturated calomel electrode as reference electrode, fluoride ion selective electrode as indicator electrode, electrode potential determination fluorine, the recoveries of 101%- 105Z%, suitable for the determination of fluorine containing ash.
出处
《有色矿冶》
2015年第2期52-54,共3页
Non-Ferrous Mining and Metallurgy
关键词
氟
离子选择电极
尾矿
fluorin
ion selective electrode
tailings
