Equating emissions to mass loading

I want to estimate aerosol mass loading by dividing emissions of the particular aerosol by the associated area. Assuming the air had no other particles in it to begin with - is this procedurally correct?




Given the context of your question, I assume you must mean "the associated *volume*", not "the associated *area*". 


Other than that, you are exactly correct. For example, given the following parameters: 



> 
> aerosol emissions rate = 0.010 mg $\mathrm{hr^{-1}}$  
> 
>  duration of aerosol emissions = 1 $\mathrm{hr}$  
> 
>  container volume = 1 $\mathrm{m{^3}}$
> 
> 
> 


Then the aerosol mass loading would be given as: 



> 
> total aerosol mass = 0.010 mg $\mathrm{hr^{-1}}$ $\mathrm{x}$ 1
>  $\mathrm{hr}$ = 0.010 mg
> 
> 
> **aerosol mass loading = 0.010 mg / 1 $\mathrm{m{^3}}$ = 0.010 mg
>  $\mathrm{m{^{-3}}}$** 
> 
> 
> 


If you really meant *area* and not *volume*, as in surface area of the aerosols, then your statement would be over-simplified and you would need to include other assumptions made concerning particle size and density etc. in order to determine whether the way your statement is correct as written.


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