Unionized ammonia, NH3
Bounded definition
The unionized fraction of total ammonia.
Do not infer more: Its fraction changes with pH and temperature, so NH3 and total ammonia are not interchangeable numbers.
Wording people may use
nh3, un-ionized ammonia, unionised ammonia, toxic ammonia.
Use the term in context
Continue with nitrogen-label guide, parameter guide. The glossary standardizes wording; the linked guide carries the practical method, evidence and decision boundary.
Editorial definition reviewed 2026-08-12. It adds no diagnosis, universal care target or new biological evidence. Challenge this wording or provide a source.