PPM to gram (1 Viewer)

[Aaron.Judd]

How do I convert PPM to grams, and then grams to PPM?

 

[JasonNg1025]

ppm is literally parts per million.
It can be parts in kg / 1000000 kg or parts in g /1000000 g
In solids, that's how you work it out.
In solutions, you can say ppm == mg L^-1
An example is in the 2007 paper I think

22 a), along the lines of this:

Calculate the volume of sulfur dioxide produced when a full tank of capacity 60kg of diesel is consumed at 25^o C and 100kPa if the sulfur amount in diesel is 50ppm.

So - Allowed amount is 50ppm
So mass of sulfur allowed in the total amount of diesel is if you cut the 60kg into a million parts and take 50 of them (ppm does not have a fixed unit):

Mass sulfur = 50 / 10^6 x 60kg = 3 g

1 mol sulfur --> 1 mol SO₂ ( S + O₂ ---> SO₂)

Vol. SO₂ = 3 / 32.07 x 24.79 = 2.3L

 

[Aaron.Judd]

Thanks, I think I get it now.