Assertion: total ammonia | /r/HasProperty | the sum of nh 3 and nh
Facets:
Source sentences:
text: The concentrations of ammonia are usually expressed either as total ammonia (the sum of NH 3 and NH 4 +) which takes into account the total amount as NH 3 or N (Emerson et al. 1975), or as concentration of the un-ionised NH 3 only.