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1-苯基-3-甲基-4-苯甲酰基毗唑酮(PMBP)在分析化学上已广泛应用.本文着重报导在硫酸-硝酸溶液中,有柠檬酸和过氧化氢存在下,微克量锆和100毫克铌共存时,以 PMBP 萃取完全的适宜条件(用硝酸反萃取,加入高氯酸于反萃液中,加热破坏有机物后以偶氮胂Ⅲ进行光度测定.在确定了的适宜条件下,大量钽、钛等离子不影响锆的萃取和测定.铌、钽、钛、铌-钛合金、锡化三铌和金红石精矿中微量锆用本法分离和测定,得到较满意结果.
1-Phenyl-3-methyl-4-benzoylpyrazolone (PMBP) has been widely used in analytical chemistry.This article mainly reports that in the presence of citric acid and hydrogen peroxide in sulfuric acid-nitric acid solution, When the amount of zirconium and 100 mg of niobium coexist, the optimum conditions for the extraction with PMBP are complete (with the stripping of nitric acid, the addition of perchloric acid in the stripping solution, the photochemical determination of arsenazo III after heating and destroying the organics, Under the conditions, a large amount of tantalum and titanium ions do not affect the extraction and determination of zirconium.Micro zirconium in niobium, tantalum, titanium, niobium-titanium alloy, niobium tin trioxide and rutile concentrates is separated and determined by this method, and satisfactory results are obtained.