How can PPM be calculated in chemistry?
In order to calculate the parts per million you will need to know how many mg of solute is dissolved in 1000g (1L) of water.
Multiplying 0.000001 by 1,000,000 gives a result of 1ppm.
Here is a video discussing this type of calculation. In the video, the number of moles of barium present in a 1L sample of water with a barium concentration of 2ppm is calculated.
2 ppm is the maximum allowable level for barium in drinking water in the US as established by the EPA .
Video from: Noel Pauller