This question is poorly phrased. ppm or parts per million is a measure of the concentration of one element of a solution or gas. Pounds per volume is a measure of density and depends on the materials. The two measure different things and therefore there's no general conversion.
Many are the engineers that are trying to convert ppm in wastewater to actual pounds for reporting purposes. And pounds has more meaning to the average individual than ppm does. Generally speaking, one may take:
(ppm) x (flow of water (gal/"time")) x (conversion factor) = pounds per "time"
In this example, time = 1 month. Therefore, the ppm of a pollutant in water may be converted to pounds by following the following equation: (note: ppm = mg/l)
(mg/l)(gal/mo)(3.7854Lit/gal)(1Lb/453.59g)(1g/1000mg)=Lb/mo
The conversion factor = 8.3454E-06 or 0.0000083454
Above can be simplified as follows:
Monthly Gallons of Chemical x Density of Same Chemical in "Pounds/Gallon" x (# of Parts/1,000,000) (Unitless) = ...Pounds per month
If Unknown, Density = Specific Gravity x 8.345, i.e., Water Weight in Pounds per Gallon
Above both methods assume that PPMV value is in relation to the total volume of solvent or chemical used and not necessarily the total volume of inlet or outlet air of a process equipment. For PPMv of the outlet or inlet air, the calculations will be different as provided in EPA's AP-42 Conversion Table along with the use of air fuel ratio in case of combustion process.
Good luck!
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To convert parts per million (ppm) to pounds per gallon, you need to know the density of the substance in question. Multiply the ppm value by the density in pounds per gallon to get the result. The formula would be: (ppm * density in lb/gal) / 1,000,000 = pounds per gallon.
To find the percentage of 130 ppm in a gallon, you need to first convert the ppm (parts per million) to a fraction by dividing by 1,000,000. Then, multiply this fraction by the volume of a gallon (128 oz) and convert the result to a percentage. In this case, 130 ppm in a gallon would be 0.00013 * 128 oz = 0.01664 oz, which is approximately 0.2%.
To convert parts per million (ppm) of a substance to grains per gallon (gpg), you need to know the atomic or molecular weight of the substance. Once you have this information, you can use the formula: gpg = ppm x (atomic/molecular weight/7000).
To convert 0.5 percent to parts per million (ppm), you multiply by 10,000. So, 0.5 percent is equal to 5,000 ppm.
To convert parts per billion (ppb) to parts per million (ppm), you divide by 1000. So, 28 ppb is equal to 0.028 ppm.
To convert micrograms per square centimeter (ug/cm2) to parts per million (ppm), you need to know the density of the substance in question. First, you convert ug/cm2 to micrograms per cubic centimeter (ug/cm3) by dividing by the thickness of the material in centimeters. Then, you convert ug/cm3 to milligrams per cubic centimeter (mg/cm3) by dividing by 1000. Finally, you convert mg/cm3 to ppm by multiplying by the density of the substance in grams per cubic centimeter and then by 1,000,000.