High-performance liquid chromatography - atmospheric pressure negative chemical ionisation - mass spectrometry of 2,4-dinitrophenyl derivatives of amines.
High-performance liquid chromatography (HPLC) coupled to mass spectrometry (MS) is used to detect 2,4-dinitrophenyl (DNP) derivatives of amines by means of negative chemical ionisation at atmospheric pressure. The high sensitivity and good comparability of UV- and MS-detection of DNP-derivatives of amines is shown by several examples. The high selectivity of the derivatisation and the detection method (UV and MS) is used for the analysis of unknown amines in aqueous phases after hydrolytic degradation of polyamide-amine- or polyamine-epoxide-adducts as well as for the characterisation of commercial products.
Fuchslueger
U
U
Ciba-Geigy Ltd., Polymers Division, CH-4002, Basel, Switzerland.
Rissler
K
K
Grether
H J
HJ
Grasserbauer
M
M