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在化学分析操作中,分解样品的盐酸、硝酸、硫酸、氢氟酸在加热时,绝大部份排入大气造成污染。如果是均匀扩散,有2升盐酸加热变为蒸汽,则能使1万7千多立方米空气中氯化氢含量超过国家允许标准,而对氟氢酸只用0.6升就足使同样容积空气中氟化物含量超过规定。采用氢氟酸冷溶法分解测定硅酸盐岩石中钾与钠,不仅大大减少了污染,而且设备简单,成本低。这种方法早在50年代曾被用于分解测定矿石中的亚铁,但长期以来没有引起足够注意。当前鉴于对环境保护的日益童视,希望能有更多的冷溶分解方法应用于分析检验的生产实践。
In the chemical analysis operation, the decomposition of samples of hydrochloric acid, nitric acid, sulfuric acid, hydrofluoric acid in heating, the vast majority into the atmosphere to cause pollution. If it is evenly spread, 2 liters of hydrochloric acid heating into steam, can make more than 17,000 cubic meters of hydrogen chloride content in the air exceeds the national allowable standard, but only 0.6 liters of hydrofluoric acid is enough to make the same volume of air in the fluorine Chemical content exceeds the provisions. The use of hydrofluoric acid cold dissolution decomposition of silicate rock potassium and sodium, not only greatly reduce the pollution, but also the equipment is simple and low cost. This method was used in the 1950s to decompose ferrous iron in ores, but has not attracted enough attention for a long time. In the light of the increasing environmental protection, it is hoped that more cold-solution methods will be applied to the production of analytical tests.