I am trying to compare the performance of several aerosols measurement techniques including the optical particles counter principles and photometer. The GRIMM records concentration in counts/liter whereas APS in dN/dlogDp, how do I normalize the GRIMM's reading?
Hi Fabrice Kapiamba,
If I'm understanding your question correctly, you are trying to convert a concentration in units of counts/L to dN/dlogDp for a specific Dp range, say Dp1 to Dp2.
If that is the case, I believe you would do the following:
E.g. if the range of the Dp size bin is 0.3 μm to 0.4 μm, you would divide the resulting concentration from Step 1 by [log(0.4) - log(0.3)].
This should give you a value that is comparable to the dN/dlogDp value from your other instrument.
Let me know if I've misinterpreted anything or something is unclear.
Best,
Joe
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