At-line solid phase extraction

Electropherograms of a urine sample (8 ml) spiked with non-steroidal anti-inflammatory drugs (10 (Jig/ml each) after direct CE analysis (b) and at-line SPE-CE (c). Peak identification is as follows I, ibuprofen N, naproxen K, ketoprofen F, flurbiprofen. Reprinted from Journal of Chromatography, B 719, J. R. Veraart et al., At-line solid-phase extraction for capillary electrophoresis application to negatively charged solutes, pp. 199-208, copyright 1998, with permission from Elsevier Science. 

J. R. Veraart, C. Gooijer, H. Lingeman, N. H. Velthorst and U. A. Th Brinkman, At-line solid-phase extraction coupled to capillary electrophoresis determination of amphoteric compounds in biological samples , 7. High Resolut. Chromatogr. 22 183-187(1999). 

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See also in sourсe #XX -- [ ]

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