[Prev][Next][Index]
# Re: Converting mg/L to ppm?

>From: tmarch at primenet_com (Todd March)
>Date: Fri, 19 Jul 1996 18:58:38 -0700
>Subject: Converting mg/L to ppm?
>
>Can anyone give me the formulas and explanations for converting mg/litre to
>ppm (parts per million)?
>Todd March
>tmarch at primenet_com
mg/L is approximately ppm.
The concentration of 0.001M (1mM) in ppm is equal to the number of grams
per mole (FW) of solute. Where M = molarity in moles per litre and FW =
formula weight of solute in grams per mole.
Ex: Given a 0.0189 M solution of NaCl. What is the concentration of Na in
this solution in ppm? Ans: 434.7 ppm.
0.0189 M x (23.0 ppm/.001M) = 434.7 ppm, since the FW of Na is 23 g per mole.
Augustine Rodriguez
Elk Mound, WI, USA