Amines in aqueous samples

For GC analysis, HS is a preconcentration technique particularly suitable for the sampling of volatile organic compounds in air, water, and solids. Few reports have been published on the use of static headspace in the analysis of free amines in aqueous samples because of the high polarity and solubility in water of these compounds." In one experiment," static headspace preconcentration was developed for the gas chromatographic analysis of aliphatic amines in aqueous samples. A liquid-gas ratio of 1, an incubation temperature of 80°C (15 min), a pH of 13.7, and a mixture of salts (NaCl and K2SO4) at saturation concentration gave a maximal headspace amine concentration (Table 11.4). 

Baltussen, E., David, F., Sandra, P., Janssen, H. G., and Cramers, C., Capillary GC determination of amines in aqueous samples using sorptive preconcentration on pohmethylsiloxane and polyacrylate phases, J. High Resolut. Chromatogr., 21, 645-648, 1998. 

Maris, C., Laplanche, A., Morvan, J., and Bloquel, M., Static headspace analysis of aliphatic amines in aqueous samples, J. Chromatogr., 846, 331-339, 1999. 

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See also in sourсe #XX -- [ ]

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