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锌矿、铅锌矿石中锌的定量方法很多,不过一般均用氯化铵-氢氧化铵-过氧化氢或溴分离铁、锰,以高铁氰化钾碘量法测定锌;亦有用更复杂的亚铁氰化钾法的。极谱法测定高含量锌也并不理想。M.A.波波夫提出的碘氟快速法可以不分离干扰物即进行测定,虽较为快速,但不适用于合铁、锰量高的矿石,又需蒸干逐去硝酸,手续麻烦。本文作者用盐酸-过氧化氢分解矿石,以适量的焦磷酸钠与氟化氢铵为掩蔽剂,消除铁、锰的干扰,用高铁氰化钾碘量法测定锌,铁(50%)、锰(12%)的存在均不干扰测定,又不需蒸干逐去硝酸,方法准确而快速。
Zinc ore, lead and zinc ore zinc quantitative methods are many, but generally with ammonium chloride - ammonium hydroxide - hydrogen peroxide or bromine separation of iron, manganese, with high-iron potassium iodide method for the determination of zinc; also useful more complex The ferrocyanide potassium method. Polarographic determination of high levels of zinc is also not ideal. The rapid method of iodofluorine proposed by M. A. Popov can be used for the determination without isolating interfering substances. Although it is fast, it is not suitable for ore with high iron content and manganese content. In this paper, the author used hydrochloric acid-hydrogen peroxide to decompose ore, with the proper amount of sodium pyrophosphate and ammonium bifluoride as masking agent to eliminate the interference of iron and manganese. The contents of zinc, iron (50%), manganese 12%) of the presence of non-interference does not require determination, but also without drying nitric acid by evaporation, the method is accurate and fast.