. . "2" . "NTRFZZZZ" . "accepted" . "Oxidation rate (daily) of ammonium {nitrification rate NH4+} per unit time per unit volume of the water body"@en . "NTRFZZZZ" . "2" . "06-JUL-15" . "NTRFZZZZ" . . "The amount (mass or moles) of ammonium removed by oxidation from a unit volume of a water body per unit time." . "Nitrification" . .