It measures concentration of hydrogen ions, not hydrogen.
The pH, or potential of hydrogen, reflects the concentration of hydrogen ions, or acidity, of a substance and usually varies between 0 and 14, with 7 considered neutral.
Chief Sudnik said the concentration of hydrogen sulfide in the hole was measured at 200 parts per million, double the amount that environmental experts consider "imminently dangerous".
Acidity is a measure of the concentration of hydrogen ions (H+) in a solution.
The pH scale, which measures the concentration of hydrogen, runs from 1, the most acidic and highest concentration of ions, to 14, the most alkaline, with almost no ions.
The pH scale, which measures the concentration of hydrogen ions, runs from zero, the most acidic, with the highest concentration of ions, to 14, the most alkaline, with almost no ions.
concentration of hydrogen ion in biofilm, mmol dm−3.
The concentration of hydrogen sulfide showed a decreasing trend after ANU addition.
The concentration of hydrogen cyanide in the springs was not measured in the spring waters.
The final concentration of hydrogen peroxide was maintained at 2 mmol L−1.
concentration of hydrogen ion at cathode/liquid interface, mol dm−3.
