Ppm conversion to grams

Conversion of parts per million (ppm) to gram/liter

Conversion of ppm (mole basis) to gram/liter for Gas Mixtures:

Using the Ideal Gas Law (PV = nRT) for a temperature of 294.1°K (21.1°C), a pressure of 1atm, and the gas constant R of 0.0821 liter x atm/mole x degree K, we find that 1 mole of ideal gas occupies 24.15 liters.

(for temperature 21.1°C (70°F) and pressure 1 atm)

( for temperature 21.1°C (70°F) and pressure 1 atm)

The concentration expressed in decimal form is unit-less. To find the concentration of Compound A in ppm, multiply the answer from equation above with 1,000,000. For example, a concentration of Compound A of 0.000100 (decimal form from equation above) would be 100 ppm, while a concentration of 0.010000 would be 10,000 ppm or 1%.