Partial conversion of methanol to formaldehyde in the gas chromatography injection port and reactivity with amines

► Partial oxidation of methanol in gas chromatograph (GC) is studied. ► High inlet temperature is a critical factor for the oxidation of methanol. ► Formaldehyde reacts with amines to form imines and oxazolidines. ► Artifacts in the chromatogram may pose difficulty in compound identification. The pa...

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Veröffentlicht in:	Journal of Chromatography A 2012-09, Vol.1257, p.158-170
Hauptverfasser:	Kee, Chee Leong, Lai, Chian Sing, Ge, Xiaowei, Low, Min Yong, Ciolino, Laura A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Amines Amines - chemistry Condensates condensation Cyclobutanes - chemistry Ephedrine Ephedrine - chemistry Formaldehyde Formaldehyde - analysis Formaldehyde - chemistry gas chromatography Gas Chromatography-Mass Spectrometry - instrumentation Gas Chromatography-Mass Spectrometry - methods GC–MS Imines - chemistry Injection port Inlet temperature isotope labeling Methanol Methanol - analysis Methanol - chemistry Methyl alcohol Oxazoles - chemistry Oxazolidine phenylpropanolamine Phenylpropanolamine - chemistry Ports secondary amines Solvents Solvents - analysis Solvents - chemistry Temperature Variable inlet temperature
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