. . "ammonium nitrogen"@en . "@en: Tests for ammonia usually measure total ammonia (NH3 plus NH4+) and the results reported as “Total ammoniacal nitrogen" . ""@it . ""@es . ""@de . "NH4N"@fr . "NH4N"@en . "ammonia nitrogen"@en . "SUBSTANCE" . . . "ammoniacal nitrogen"@en . . . . . "azote ammoniacal"@fr . "" . "A compound resulting from the combination of nitrogen (N) and hydrogen (H) with the chemical formula NH4N."@en . . "validated" . .