trano gismu

x₁ is a quantity of/contains/is made of nitrogen/ammonia/nitrates.

(adjective:) x₁ is nitric/nitrous. See also vacri.

In notes:

vacri: x₁ is a quantity of air/normally-gaseous atmosphere of planet x₂, of composition including x₃.
cmuxu'i: x₁ is an element of kind x₂ with purity x₃.
tranytrano: t₁ is a quantity of/contains/is made of nitrogen [N].
anmona: x₁ is a quantity of / contains / is made of ammonia.
anmonu: x₁ is a quantity of / contains / is made of ammonium.
tranrzalpetre: x₁ is a quantity of saltpeter.
anmonia: x₁ is a quantity of / contains / is made of ammonia.