硫酸锌是制备硫化锌型萤光粉的主要原料之一,其纯度对萤光粉的发光性能影响很大。文献介绍的柱型吸附络合色层法,是以镍试剂为络合剂,除铁、铅的效果欠佳,此外,以 HAc-NaAc作缓冲剂,引入杂质离子。我们在改进该法的同时,引进沉淀色层法,拟称为吸附络合沉淀色层法(简称络沉层法)。该法解决了大量锌中痕量铁和铅的分离,使铁清除到≤1×10~(-7)、铅≤5×10~(-8)。同时找到了 Zinc sulfate is one of the main raw materials for the preparation of zinc sulfide type phosphor, and its purity has a great influence on the luminescent properties of the phosphor. The literature describes the column-type adsorption complex chromatography, the nickel reagent complexing agent, with the exception of iron, lead ineffective, in addition, the use of HAc-NaAc as a buffer, the introduction of impurity ions. We improve the law at the same time, the introduction of precipitation chromatography, is called adsorption complex precipitation chromatography (referred to as the network layer method). The method solves the separation of trace amounts of iron and lead in a large amount of zinc so as to remove iron to ≤1 × 10 -7 and lead ≤5 × 10 -8. Found at the same time