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本文提出了在一定条件下用氮气空体积法作为BET 容量法测定死体积的方法。这个方法测定的固体比表面与氦气法测定的结果基本一致。其精度一般可在士3%以内。
In this paper, we propose a method of determining the dead volume by BET volumetric method using nitrogen void volume method under certain conditions. The specific surface area measured by this method is basically the same as that measured by helium method. Its accuracy is generally less than 3%.