ionogenic groups

https://doi.org/10.1351/goldbook.I03228
The fixed groupings in an @I03171@ which are either ionized or capable of @D01801@ into @F02402@ and mobile @C01371@.
Source:
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 854 [Terms] [Paper]