气溶胶的MMD

MMD是指质量(或体积)中位径,与CMD,SMD的换算关系如下:
For a log-normal distribution, there are closed-form relationships between
median diameters of different weightings. The count median diameter (CMD)
is related to the surface median diameter (SMD) by
( ) g
SMD = CMD∗ exp 2ln2 σ (7.26)
The CMD is related to the mass (or volume) median diameter (MMD) by
( ) g
MMD = CMD∗ exp 3ln2 σ (7.27)
The relationship between MMD and SMD is
( ) g
MMD = SMD∗ exp ln2 σ

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