How many lbs in 1ppm?

Answer 1

PPM describes the amount of a substance in a sample.

For example:

If you have one million pounds of goo that is 1 part per million (PPM) GOLD, you would have one pound of gold in the million total pounds of goo.

PPM is typically used to define how much of a pollutant is in a sample of air. If the sample was determined to be 6 ppm hydrocarbon in a sample, that would mean that of the million moles of the sample of air (the weight of the atoms that make up the sample) there would be 6 moles of the hydrocarbon specified, which, depending on the complexity of the hydrocarbon, could end up being one atom of the hydrocarbon in the sample.

Answer 2

Parts per million (ppm) is a unit of concentration that represents one part of a substance in one million parts of another. Since pounds is a unit of weight and ppm is a unit of concentration, there is no direct conversion between the two. The conversion would depend on the density of the substance being measured.