Assertion: citric acid | /r/CapableOf | use ammonium hydroxide
Facets:
value: as the desorbent
type: PURPOSE
Source sentences:
text: In another embodiment, citric acid adsorbed on the adsorbent may be converted in situ to a citrate before being desorbed, for example, by reaction with an alkaline earth metal or alkali metal hydroxide or ammonium hydroxide and then immediately eluted using a metal hydroxide, ammonium hydroxide or water as the desorbent.