Adsorbent materials commonly used in air analysis for adsorptive enrichment and thermal desorption of volatile organic compounds K Dettmer, W Engewald Analytical and bioanalytical chemistry 373 (6), 490-500, 2002 | 341 | 2002 |
Trace determination of priority pesticides in water by means of high-speed on-line solid-phase extraction–liquid chromatography–tandem mass spectrometry using turbulent-flow … A Asperger, J Efer, T Koal, W Engewald Journal of Chromatography A 960 (1-2), 109-119, 2002 | 192 | 2002 |
High extraction efficiency for POPs in real contaminated soil samples using accelerated solvent extraction A Hubert, KD Wenzel, M Manz, L Weissflog, W Engewald, G Schüürmann Analytical Chemistry 72 (6), 1294-1300, 2000 | 189 | 2000 |
Trace analysis of technical nonylphenol, bisphenol A and 17α-ethinylestradiol in wastewater using solid-phase microextraction and gas chromatography–mass spectrometry P Braun, M Moeder, P Popp, P Kuschk, W Engewald Journal of Chromatography A 988 (1), 41-51, 2003 | 186 | 2003 |
Practical gas chromatography K Dettmer-Wilde, W Engewald A Comprehensive Reference, 902, 2014 | 179 | 2014 |
Accelerated solvent extraction of semivolatile organic compounds from biomonitoring samples of pine needles and mosses KD Wenzel, A Hubert, M Manz, L Weissflog, W Engewald, G Schüürmann Analytical Chemistry 70 (22), 4827-4835, 1998 | 128 | 1998 |
Application of spectral libraries for high-performance liquid chromatography–atmospheric pressure ionisation mass spectrometry to the analysis of pesticide and explosive … A Schreiber, J Efer, W Engewald Journal of Chromatography A 869 (1-2), 411-425, 2000 | 114 | 2000 |
Determination of gadolinium in river water by SPE preconcentration and ICP-MS K Hennebrüder, R Wennrich, J Mattusch, HJ Stärk, W Engewald Talanta 63 (2), 309-316, 2004 | 104 | 2004 |
ZUR DESAKTIVIERUNG VON GLASKAPILLAREN MITTELS SILANISIERUNG. T Welsch, W Engewald, C Klaucke | 100 | 1977 |
Analytical characterization of natural waxes employing pyrolysis–gas chromatography–mass spectrometry A Asperger, W Engewald, G Fabian Journal of Analytical and Applied Pyrolysis 50 (2), 103-115, 1999 | 99 | 1999 |
Advances in the analysis of natural waxes provided by thermally assisted hydrolysis and methylation (THM) in combination with GC/MS A Asperger, W Engewald, G Fabian Journal of Analytical and Applied Pyrolysis 52 (1), 51-63, 1999 | 90 | 1999 |
On the signal response of various pesticides in electrospray and atmospheric pressure chemical ionization depending on the flow-rate of eluent applied in liquid chromatography … A Asperger, J Efer, T Koal, W Engewald Journal of chromatography A 937 (1-2), 65-72, 2001 | 80 | 2001 |
Thermally assisted hydrolysis and methylation–a simple and rapid online derivatization method for the gas chromatographic analysis of natural waxes A Asperger, W Engewald, G Fabian Journal of analytical and applied pyrolysis 61 (1-2), 91-109, 2001 | 80 | 2001 |
Ambient air analysis of volatile organic compounds using adsorptive enrichment K Dettmer, W Engewald Chromatographia 57, S339-S347, 2003 | 74 | 2003 |
Methods for, and applications of, large-volume injection in capillary gas chromatography J Teske, W Engewald TRAC Trends in Analytical Chemistry 21 (9-10), 584-593, 2002 | 74 | 2002 |
Stability of reactive low boiling hydrocarbons on carbon based adsorbents typically used for adsorptive enrichment and thermal desorption K Dettmer, T Knobloch, W Engewald Fresenius' journal of analytical chemistry 366, 70-78, 2000 | 72 | 2000 |
Contribution of volatile compounds to the flavor of cooked asparagus D Ulrich, E Hoberg, T Bittner, W Engewald, K Meilchen European Food Research and Technology 213, 200-204, 2001 | 68 | 2001 |
Programmed temperature vaporiser-based injection in capillary gas chromatography W Engewald, J Teske, J Efer Journal of Chromatography A 856 (1-2), 259-278, 1999 | 67 | 1999 |
Analysis of monoterpenes from conifer needles using solid phase microextraction B Schäfer, P Hennig, W Engewald Journal of High Resolution Chromatography 18 (9), 587-592, 1995 | 63 | 1995 |
Programmed temperature vaporisers-based large volume injection in capillary gas chromatography W Engewald, J Teske, J Efer Journal of Chromatography A 842 (1-2), 143-161, 1999 | 62 | 1999 |