在用碘量法测定矿石中的锡时,以还原性熔剂-锌粉,氢氧化钠在小瓷坩埚中分解样品是一个可行的方法,现已被许多单位采用。但用此法若样品含硅过高时熔块较难浸取,同时,小瓷坩埚容易碰破锥瓶。因此,我们又将这个方法加以改进,用自制金属铝坩埚代替小瓷坩埚,使操作手续更加简便。铝坩埚既作为熔样坩埚,又作 When determining iodine in ore by iodometry, it is a feasible method to decompose the sample in the small porcelain crucible with reducing flux - zinc powder and sodium hydroxide. Now it is adopted by many units. However, if this method is too high when the sample containing silicon frit more difficult to leach at the same time, small porcelain crucible easily broken cone bottle. Therefore, we have to improve this method, with homemade metal crucible instead of a small porcelain crucible, making the operation easier. Aluminum crucible both as crucible melting sample, but also for