Question

what is the meaning of parts per million?

Answer 1

it is the ratio of number of grams of solute to the ratio for every one million gram of solution
parts per million=gram of solute/per million gram of solution× 1000
hope, it's gonna help you buddy.

Answer 2

Explanation:

PPM is a value that represents the part of a whole number in units of 1/1000000. ppm is dimensionless quantity, a ratio of 2 quantities of the same unit. For example: mg/kg. One ppm is equal to 1/1000000 of the whole: 1ppm = 1/1000000 = 0.000001 = 1×10-6.