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R W Frei

Showing results (91-100 of 103) with videos related to

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Journal of Chromatography|July 21, 1989
Trace-level determination of 3'-azido-3'-deoxythymidine in human plasma by preconcentration on a silver (I)-thiol stationary phase with on-line reversed-phase high-performance liquid chromatographyH Irth, R Tocklu, K Welten, et al.
The Analyst|August 1, 1990
Liquid chromatographic determination of pentachlorophenol in serum, using pre-column phase-transfer catalysed dansylation and post-column photolysis with fluorescence detectionC de Ruiter, J H Brinkman, R W Frei, et al.
Journal of Pharmaceutical and Biomedical Analysis|January 1, 1988
Simultaneous determination of glutathione, glutathione disulphide, paracetamol and its sulphur containing metabolites using HPLC and electrochemical detection with on-line generated bromineA J Debets, R van de Straat, T W Voogt, et al.
Journal of Pharmaceutical and Biomedical Analysis|January 1, 1987
HPLC detection of choline and acetylcholine in serum and urine by an immobilized enzyme reactor followed by chemiluminescence detectionP Van Zoonen, C Gooijer, N H Velthorst, et al.
Journal of Chromatography|May 8, 1987
Comparison between positive, negative and chloride-enhanced negative chemical ionization of organophosphorus pesticides in on-line liquid chromatography-mass spectrometryD Barceló, F A Maris, R B Geerdink, et al.
Journal of Pharmaceutical and Biomedical Analysis|January 1, 1987
Quantitative determination of cisplatin in body fluids by liquid chromatography with quenched phosphorescence detectionR A Baumann, C Gooijer, N H Velthorst, et al.
Journal of Chromatography|April 7, 1989
Determination of beta-19-nortestosterone and its metabolite alpha-19-nortestosterone in biological samples at the sub parts per billion level by high-performance liquid chromatography with on-line immunoaffinity sample pretreatmentW Haasnoot, R Schilt, A R Hamers, et al.
Journal of Chromatography|June 5, 1987
Selective on-line trace enrichment for the determination of ethynyl steroids in urine by liquid chromatography with precolumn technologyM W Nielen, R E van Soest, H E van Ingen, et al.
International Journal of Environmental Analytical Chemistry|January 1, 1984
The use of various chromatographic techniques for the determination of phenylurea herbicides and their corresponding anilines in environmental samples. II. ApplicationsA de Kok, M van Opstal, T de Jong, et al.
Journal of Chromatography|April 22, 1987
Fully automated sample handling system for liquid chromatography based on pre-column technology and automated cartridge exchangeM W Nielen, A J Valk, R W Frei, et al.
Pageof 11

Showing results (91-100 of 103) with videos related to

Sort By:
Pageof 11
Journal of Chromatography|July 21, 1989
Trace-level determination of 3'-azido-3'-deoxythymidine in human plasma by preconcentration on a silver (I)-thiol stationary phase with on-line reversed-phase high-performance liquid chromatographyH Irth, R Tocklu, K Welten, et al.
The Analyst|August 1, 1990
Liquid chromatographic determination of pentachlorophenol in serum, using pre-column phase-transfer catalysed dansylation and post-column photolysis with fluorescence detectionC de Ruiter, J H Brinkman, R W Frei, et al.
Journal of Pharmaceutical and Biomedical Analysis|January 1, 1988
Simultaneous determination of glutathione, glutathione disulphide, paracetamol and its sulphur containing metabolites using HPLC and electrochemical detection with on-line generated bromineA J Debets, R van de Straat, T W Voogt, et al.
Journal of Pharmaceutical and Biomedical Analysis|January 1, 1987
HPLC detection of choline and acetylcholine in serum and urine by an immobilized enzyme reactor followed by chemiluminescence detectionP Van Zoonen, C Gooijer, N H Velthorst, et al.
Journal of Chromatography|May 8, 1987
Comparison between positive, negative and chloride-enhanced negative chemical ionization of organophosphorus pesticides in on-line liquid chromatography-mass spectrometryD Barceló, F A Maris, R B Geerdink, et al.
Journal of Pharmaceutical and Biomedical Analysis|January 1, 1987
Quantitative determination of cisplatin in body fluids by liquid chromatography with quenched phosphorescence detectionR A Baumann, C Gooijer, N H Velthorst, et al.
Journal of Chromatography|April 7, 1989
Determination of beta-19-nortestosterone and its metabolite alpha-19-nortestosterone in biological samples at the sub parts per billion level by high-performance liquid chromatography with on-line immunoaffinity sample pretreatmentW Haasnoot, R Schilt, A R Hamers, et al.
Journal of Chromatography|June 5, 1987
Selective on-line trace enrichment for the determination of ethynyl steroids in urine by liquid chromatography with precolumn technologyM W Nielen, R E van Soest, H E van Ingen, et al.
International Journal of Environmental Analytical Chemistry|January 1, 1984
The use of various chromatographic techniques for the determination of phenylurea herbicides and their corresponding anilines in environmental samples. II. ApplicationsA de Kok, M van Opstal, T de Jong, et al.
Journal of Chromatography|April 22, 1987
Fully automated sample handling system for liquid chromatography based on pre-column technology and automated cartridge exchangeM W Nielen, A J Valk, R W Frei, et al.
Pageof 11