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矿石中微量溴的测定通常采用比色法和中子活化法,前者易受干扰且稳定性差,后者因设备所限尚不能推广。随着离子选择电极法问世,现已有用电极法测溴的应用实例,但对于伴生有硫、碘的矿石中溴的测定未见报导。根据硫、碘离子较易氧化的特性,试验了对硫、碘离子进行氧化的条件,确定用硝酸钾、氢氧化钾熔融,使硫及大部分碘化物氧化成对电极法测溴不干扰的硫酸盐及碘酸盐。此外,我们还在浸液中滴入高锰酸钾溶液使碘氧化完全,并为防
Determination of trace bromine ore usually colorimetric and neutron activation method, the former susceptible to interference and poor stability, the latter due to the equipment can not be promoted. With the advent of ion-selective electrode method, there are some examples of using electrode method to measure bromine, but there is no report about the determination of bromine in ore with sulfur and iodine. According to the easier oxidation of sulfur and iodine ions, the conditions for the oxidation of sulfur and iodide ions were tested, and it was confirmed that the oxidation of sulfur and most of the iodide to the bromine ion of the electrode did not interfere with the potassium nitrate and potassium hydroxide melting Sulfate and iodate. In addition, we also drip infusions of potassium permanganate solution to completely oxidize iodine and prevent it