SIMULTANEOUS DETERMINATION OF HALOGEN (F, Cl, Br) IN SOME ORE SAMPLES BY USING PYROHYDROLYSIS AND ION SELECTIVE ELECTRODES

Abstract

    The study on simultaneously quantitative determination of halogen (F, Cl, Br) in someore samples by using pyrohydrolysis technique followed by ion selective electrodemeasurement has been carried out firstly in the Institute for Technology ofRadioactive and Rare Elements (ITRRE). The recovery of all studied halides in astandard reference material (SRM) QM3 based on bastnesite matrix at 1000oCreached nearly 99%. The analytical procedure was then applied for the determinationof these above-mentioned halides in Apatite, Boxite, Fluorite and Pyrite samples withthe relatively standard deviation of all measurement existed within 10%. It is thuscapable to employ this new approach for further study of other volatile elements inseveral solid samples.