有关“浓度”的正确用法

On the Correct Usage of Concentration

林章碧

LIN Zhang-Bi

质量浓度、分子浓度、质量摩尔浓度的单位分别为kg/L或kg/m3、m-3、mol/kg。“浓度”一词作为简称时，只能指物质的量浓度，法定单位为mol/L或mol/m3。质量分数或体积分数不能简称为“浓度”，应用“%”表示。

The unit of mass concentration, molecular concentration and molality is kg/L (or kg/m3), m-3 and mol/kg, respectively. As an abbreviation, “concentration” should only refer to amount-of-substance concentration, whose legal unit is mol/L or mol/m3. Mass fraction and volume fraction, whose unit is %, can not be referred to as “concentration” for short.