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采用锂盐作熔剂,一般硅酸盐均可分解完全。本文选择了一种聚乙二醇作凝聚剂,可不用浓缩体积,维持一定的酸度就可直接凝聚硅,并且有过滤速度快的优点,30件样品从称样到过滤当天可完毕此凝聚剂也可适用于常用的在碳酸钠熔剂的硅的快速凝聚。若以Li_2CO_3∶LiOH∶H_3BO_3=2∶1∶1为熔剂,还可直接快速测定如萤石之类的含氟试样。 试剂及操作 Li_2CO_3∶LiOH混合熔剂为2∶1 聚乙二醇溶液0.5％∶0.5克聚乙二醇用100毫升
Lithium salt as a flux, the general decomposition of silicate can be completely. This paper chose a polyethylene glycol as a coagulant, without the need to concentrate the volume, to maintain a certain degree of acid can be directly condensed silicon, and the advantages of fast filtration, 30 samples from the sample to the filter can be completed the same day the coagulant It is also applicable to the conventional rapid agglomeration of silicon in sodium carbonate flux. If Li_2CO_3:LiOH:H_3BO_3 = 2: 1: 1 flux, but also can be directly and quickly measured such as fluorite fluorocarbons like samples. Reagents and operations Li_2CO_3: LiOH mixed flux 2: 1 polyethylene glycol solution 0.5%: 0.5 g of polyethylene glycol with 100 ml