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reactofurnace
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sad.gif posted on 2-11-2020 at 21:00
Question (PPM)


Does 1 ppm (parts per million) = 1 mg/L for all solvents or just water?
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reactofurnace
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[*] posted on 2-11-2020 at 21:03


Quote: Originally posted by reactofurnace  
Does 1 ppm (parts per million) = 1 mg/L for all solvents or just water?


All sources I found seem to specify aqueous solutions.
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DraconicAcid
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[*] posted on 2-11-2020 at 21:23


Only for dilute aqueous solutions, or those with a density of 1 g/mL. It will be 1 mg per kg of mixture for all systems.



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Cou
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[*] posted on 3-11-2020 at 10:12


For solvents besides water, ppm is just a nickname for mg/L concentrations. I analyze substances by diluting 250 mg in 25 mL to make a 10000 mg/L or "ppm" solution.



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