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376 Multidimensional Chromatography

83. T. Hankemeier, A. J. H. Louter, J. Dallüge, R. J. J. Vreuls and U. A. Th Brinkman, ‘Use
of a drying cartridge in on-line solid-phase extraction gas chromatography–mass spec-
trometry’, J. High Resolut. Chromatogr. 21:450–456 (1998).
84. H. G. J. Mol, H.-G. M. Janssen, C. A. Cramers, J. J. Vreuls and U. A. Th Brinkman,
‘Trace level analysis of micropollutants in aqueous samples using gas chromatography
with on-line sample enrichment and large volume injection’, J. Chromatogr. 703:
277–307 (1995).
85. J. J. Vreuls,A. J. H. Louter and U. A. Th Brinkman, ‘On-line combination of aqueous-sam-
ple preparation and capillary gas chromatography’, J. Chromatogr. 856:279–314 (1999).
86. A. J. H. Louter, S. Ramalho, R. J. J. Vreuls, D. Jahr and U. A. Th Brinkman, ‘An
improved approach for on-line solid-phase extraction-gas chromatography’,
J. Microcolumn Sep. 8:469–477 (1996).
87. E. C. Goosens, D de Jong, G. J. de Jong and U. A. Th Brinkman, ‘On-line sample treat-
ment–capillary gas chromatography’, Chromatographia 47:313–345 (1998).
88. J. J. Vreuls, W. J. G. M. Cuppen, G. J. de Jong and U. A. Th Brinkman, ‘Ethyl acetate
for the desorption of a liquid chromatographic precolumn on-line into a gas chromato-
graph’, J. High Resolut. Chromatogr. 13:157–161 (1990).
89. A. J. H. Louter, J. J. Vreuls and U. A. Th Brinkman, ‘On-line combination of aqueous-
sample preparation and capillary gas chromatography’, J. Chromatogr. 842:391–426
(1999).
90. Y. Picó, A. J. H. Louter, J. J. Vreuls and U. A. Th Brinkman, ‘On-line trace-level enrich-
ment gas chromatography of triazine herbicides, organophosphorus pesticides and
organosulfur compounds from drinking and surface waters’, Analyst 119: 2025–2031
(1994).
91. P. J. M. Kwakman, J. J. Vreuls, U. A. Th Brinkman and R. T. Ghijsen, ‘Determination
of organophosphorus pesticides in aqueous samples by on-line membrane disk extrac-
tion and capillary gas chromatography’, Chromatographia 34:41–47 (1992).
92. E. Pocurull, C. Aguilar, F. Borrull and R. M. Marcé, ‘On-line coupling of solid-phase
extraction to gas chromatography with mass spectrometric detection to determine pesti-
cides in water’, J. Chromatogr. 818:85–93 (1998).
93. A. J. H. Louter, C. A. Beekelt, P. Cid Montanes, J. Slobodnik, J. J. Vreuls and U. A.
Th Brinkman, ‘Analysis of microcontaminants in aqueous samples by fully automated
on-line solid-phase extraction–gas chromatography–mass selective detection’,
J. Chromatogr. 725:67–83 (1996).
94. J. Dallüge, T. Hankemeier, J. J. Vreuls and U. A. Th Brinkman, ‘On-line coupling of
immunoaffinity-based solid-phase extraction and gas chromatography for the determi-
nation of s-triazines in aqueous samples’, J. Chromatogr. 830:377–386 (1999).
95. T. H. M. Noij, M. E. Margo and M. E. van der Kooi, ‘Automated analysis of polar pesti-
cides in water by on-line solid phase extraction and gas chromatography using the co-
solvent effect’, J. High Resolut. Chromatogr. 18:535–539 (1995).
96. T. Hyötyläinen, K. Grob, M. Biedermann and M. L. Riekkola, ‘Reversed phase HPLC
coupled on-line to GC by the vaporizer/precolumn solvent split/gas discharge interface;
analysis of phthalates in water’, J. High Resolut. Chromatogr. 20:410–416 (1997).
97. A. C. Lewis, R. E. Robinson, K. D. Bartle and M. J. Pilling, ‘On-line coupled
LC–GC–ITD MS for the identification of alkylated, oxygenated and nitrated poly-
cyclic aromatic compounds in urban air particulate extracts’, Environ. Sci. Technol. 29:
1977–1981 (1995).
98. K. Grob-Jr and Z. Li, ‘Coupled reversed-phase liquid chromatography–capillary gas
chromatography for the determination of atrazine in water’, J. Chromatogr. 473:
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