微波炉在重量法测定硫中的应用

Application of Microwave Oven to Gravimetric Determination of Sulfur

采用玻璃砂芯坩埚过滤BaSO_4沉淀,微波炉代替马弗炉恒重坩埚、沉淀,重量法测定了矿石中的硫。方法准确,精密度好。微波炉不需预先升温,加热6min可达恒重,省时、省电。

A microwave oven is used for drying the BaSO4 precipitate which has been filtered off on a sintered glass filter crucible. Only 6 min is required for the heating, without any preheating of the oven. The results compare favorably with those obtained from the traditional ignition of precipitate in paper.