How do you convert microgrammes per metre cubed into Parts per million?

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Offline Mazurka

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I have some figures for hydrogen sulphide concentration given in μgm-3

Sadly, this does not mean a lot to me as I am more familiar with PPM (v/v) as are most field instruments...

Cound any one give me the appropriate formula etc?



Offline Bored chemist

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Please disregard all previous signatures.