Conversion PPM(wt), PPM(vol), g/m3 (gas phase) - Chemical environmental control - Eng-Tips
Usually, for air concentration results or stack sampling results, when one writes ppm it is often assumed that it is ppmv (volume (or mole). It is common to have certain pollutants, like Hg and heavy metals ewpressed as mg/Nm3, dry basis, corrected at a r...