采用碘量法测定钨锰铁矿中的锡,一般都能获得准确的结果,而且应用范围很广,整个操作过程也比较容易掌握。但本法的另一方面,矿样的分解手续还比较复杂。用硝酸(比重1.42)分解矿样后,过滤、洗涤、擦下杯壁上粘附的沉淀所需的时间很长;严重地影响了化验工作的及时性,降低了化验对生产所起的作用。同时用硝酸分解矿样,在目前大多数矿山化验室通风设备不完善的情况下, Iodine method for the determination of tin in wolframite, generally can get accurate results, but also a wide range of applications, the entire operation process is also easier to grasp. However, on the other hand, the procedures for decomposing ore samples are still complicated. With nitric acid (specific gravity 1.42) after the decomposition of ore samples, filtration, washing, wiping off the wall of the cup attached to the sediment for a long time; seriously affected the timeliness of laboratory work and reduce the role of laboratory tests on the production . At the same time decomposition of mineral samples with nitric acid, most of the current mine ventilation equipment imperfections,