Entries of Engewald, W. on the publication server

Matysik, Frank-Michael, Schumann, U. and Engewald, W. (2008) Isocratic liquid chromatography with segmented columns and simultaneous UV and dual electrochemical detection: application to the selectivity enhancement for the determination of explosives. Electroanalysis 20, p. 98. Fulltext not available.

Schumann, U., Matysik, Frank-Michael and Engewald, W. (2007) Isokratische Trennung von Sprengstoffen mit segmentierten Säulen. LC-GC, p. 34. Fulltext not available.

Matysik, Frank-Michael, Engewald, W. and Schumann, U. (2007) Optimierung der Selektivität in der isokratischen HPLC mit segmentierten Säulen and simultaner UV- und elektrochemischer Detektion. Nachrichten aus der Chemie 55, p. 1114. Fulltext not available.

Matysik, Frank-Michael, Engewald, W. and Schumann, U. (2007) Phasenoptimierte Flüssigchromatographie von Explosivstoffen. GIT-Spezial 1, p. 9. Fulltext not available.

Schmidt, A.-C., Niehus, B., Matysik, Frank-Michael and Engewald, W. (2006) Identification and quantification of polar nitroaromatic compounds in explosive-contaminated waters by means of liquid chromatography coupled to electrospray ionisation tandem mass spectrometry and additional studies by HPLC-UV. Chromatographia 63, p. 1. Fulltext not available.

Schmidt, A.-C., Herzschuh, R., Matysik, Frank-Michael and Engewald, W. (2006) Investigation of the ionisation and fragmentation behaviour of different nitroaromatic compounds occurring as polar metabolites of explosives using electropspray ionisation tandem mass spectrometry. Rapid Communications in Mass Spectrometry 20, p. 2293. Fulltext not available.

Guo, L., Matysik, Frank-Michael, Gläser, P. and Engewald, W. (2005) Determination of hydrazine, monomethylhydrazine, 1,1-dimethylhydrazine and 1,2-dimethylhydrazine by nonaqueous capillary electrophoresis with amperometric detection. Electrophoresis 26, p. 3341. Fulltext not available.

Beyer, D., Eckerle, P., Cortes, H., Engewald, W. and Dettmer, Katja (2005) Development and applications of an automated in-column pyrolysis gas chromatography mass spectrometry system. Chromatographia 62, pp. 417-422. Fulltext not available.

Dettmer, Katja and Engewald, W. (2003) Ambient air analysis of volatile organic compounds using adsorptive enrichment. Chromatographia 57 suppl.1, S339-S347. Fulltext not available.

Bothe, F., Dettmer, Katja and Engewald, W. (2003) Determination of perfume oil in household products by geadspace solid-phase microextraction and fast capillary gas chromatography. Chromatographia 57 suppl.1, S190-S206. Fulltext not available.

Drechsel, D., Dettmer, Katja and Engewald, W. (2003) Studies of thermally assisted hydrolysis and methylation-GC-MS of fatty acids and triglycerides using different reagents and injection systems. Chromatographia 57 suppl.1, S283-S289. Fulltext not available.

Dettmer, Katja and Engewald, W. (2002) Adsorbent materials commonly used in air analysis for adsorptive enrichment and thermal desorption of volatile organic compounds. Analytical and Bioanalytical Chemistry 373 (6), pp. 490-500. Fulltext not available.

Dettmer, Katja, Bittner, T. and Engewald, W. (2001) Adsorptive enrichment and thermal desorption of low-boiling oxygenated compounds—possibilities and limitations. Chromatographia 53 suppl.1, S322-S326. Fulltext not available.

Drechsel, D., Dettmer, Katja, Engewald, W., Bittner, T. and Efner, J. (2001) GC analysis of trichloroacetic acid in water samples by large-volume injection and thermal decarboxylation in a programmed-temperature vaporizer. Chromatographia 54, pp. 151-154. Fulltext not available.

Dettmer, Katja, Felix, U., Engewald, W. and Mohnke, M. (2000) Application of a unique selective PLOT capillary column for the analysis of oxygenated compounds in ambient air. Chromatographia 51 Suppl., S221-S227. Fulltext not available.

Dettmer, Katja, Knobloch, T. and Engewald, W. (2000) Stability of reactive low boiling hydrocarbons on carbon based adsorbents typically used for adsorptive enrichment and thermal desorption. Analytical and Bioanalytical Chemistry (Formerly: Fresenius' Journal of Analytical Chemistry 366, pp. 70-78. Fulltext not available.