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利用镓的氧化物具有两性的性质,样品经碱熔,热水浸取后,不经酸化蒸干分离硅,直接分取碱性溶液,用盐酸酸化并使溶液酸度保持在6N(HCl),三价镓与丁基罗丹明B生成氯镓酸丁基罗丹明B的络合物一次被苯—乙酸丁酯萃取,此法可测铝土矿中0.1~8.0此g/10ml镓的含量。经试验和大批样品测得结果证明,矿样中硅高达50%以上也不干扰,与碱熔除硅反复萃取的经典比色法结果完全相符,重现性好,质量稳定,速度快,成本低。其手续如下:称取矿样0.5000g于银坩埚中,用无水乙醇湿润,加氢氧化钠
The use of gallium oxide has the nature of the amphoteric, alkali melting after the sample, hot water leaching, without acidification dry separation of silicon, direct separation of the alkaline solution, acidified with hydrochloric acid and the solution acidity maintained at 6N (HCl) Trivalent gallium and butyl rhodamine B generated ClgCG rhodamine B complex was benzene-butyl acetate extraction, this method can be measured bauxite 0.1 ~ 8.0 g / 10ml gallium content. The test results and a large number of samples proved that the sample of silicon up to 50% or more does not interfere with the repeated extraction of alkali fusion silicon classic colorimetric results are consistent, good reproducibility, quality, speed, cost low. The procedure is as follows: Weigh ore sample 0.5000g silver crucible, wet with anhydrous ethanol, add sodium hydroxide