What do you mean by ppm, ppb and ppt in chemical concentration?
Ppm refers to the mass of solute contained in a solution with a unit mass of one millionth, and several millionths are called several ppm, and ppm= (solute mass/solution mass) * 1000000.
Ppb is a part.
each
The abbreviation of billion is a unit symbol indicating the concentration of liquid. Generally, it is read as11one billionth, that is, the negative ninth power symbol of 10, that is,1/000 ppm.