On-line sample treatment—capillary gas chromatography
EC Goosens, D De Jong, GJ De Jong, UAT Brinkman - Chromatographia, 1998 - Springer
Sample pretreatment is often the bottleneck of a tracelevel analytical procedure. In order to
increase performance, increasing attention is therefore being devoted to combining sample …
increase performance, increasing attention is therefore being devoted to combining sample …
Coupling device for desorption of drugs from solid-phase extraction-pipette tips and on-line gas chromatographic analysis
MWJ Van Hout, RA De Zeeuw, GJ De Jong - Journal of Chromatography A, 1999 - Elsevier
Solid-phase extraction-pipette tips were used for micro solid-phase extraction of lidocaine
and diazepam. Off-line desorption was done after in-vial collection for reference purposes, …
and diazepam. Off-line desorption was done after in-vial collection for reference purposes, …
A continuous liquid‐liquid extraction system coupled on‐line with capillary gas chromatography for environmental and ecotoxicological analysis
EC Goosens, D de Jong, GJ de Jong… - Journal of High …, 1997 - Wiley Online Library
The applicability of a liquid‐liquid extraction system which is coupled on‐line with a capillary
gas chromatograph was studied for environmental and ecotoxicological analyses. The …
gas chromatograph was studied for environmental and ecotoxicological analyses. The …
Feasibility of the direct coupling of solid-phase extraction–pipette tips with a programmed-temperature vaporiser for gas chromatographic analysis of drugs in plasma
MWJ Van Hout, WMA Van Egmond, JP Franke… - … of Chromatography B, 2002 - Elsevier
Solid-phase extraction–pipette tips (SPE–PTs) were used for micro solid-phase extraction of
lidocaine and diazepam from plasma. Off-line extraction was followed by on-line desorption. …
lidocaine and diazepam from plasma. Off-line extraction was followed by on-line desorption. …
On-fiber derivatization for direct immersion solid-phase microextraction. Part II. Acylation of amphetamine with pentafluorobenzoyl chloride for urine analysis
EHM Koster, CHP Bruins, GJ De Jong - Analyst, 2002 - pubs.rsc.org
On-fiber derivatization was used for solid-phase microextraction (SPME) in order to increase
the detectability and extractability of drugs in biological samples. Amphetamine, which was …
the detectability and extractability of drugs in biological samples. Amphetamine, which was …
Reversed‐phase liquid chromatography coupled on‐line with capillary gas chromatography II. Use of a solvent vapor exit to increase introduction volumes and …
EC Goosens, D de Jong, GJ de Jong… - Journal of …, 1994 - Wiley Online Library
A large‐volume introduction system for capillary gas chromatography (GC) is described which
can be coupled on‐line with reversed‐phase liquid chromatography (LC) using 2 mm id …
can be coupled on‐line with reversed‐phase liquid chromatography (LC) using 2 mm id …
On‐fiber derivatization for direct immersion solid‐phase microextraction Part I: Acylation of amphetamine with pentafluorobenzoyl chloride
EHM Koster, CHP Bruins, C Wemes… - Journal of Separation …, 2001 - Wiley Online Library
On‐Fiber derivatization has been used for solid‐phase microextraction (SPME) with gas
chromatography in order to increase the extractability and detectability. Amphetamine, which …
chromatography in order to increase the extractability and detectability. Amphetamine, which …
Reversed-phase liquid chromatography coupled on-line with capillary gas chromatography use of an anion-exchange membrane to remove an ion-pair reagent from …
EC Goosens, IM Beerthuizen, D De Jong, GJ De Jong… - Chromatographia, 1995 - Springer
In order to enable the coupling of reversed-phase liquid chromatography (RPLC) with
capillary gas chromatography (GC), the performance of an anion-exchange micromembrane …
capillary gas chromatography (GC), the performance of an anion-exchange micromembrane …
New developments in integrated sample preparation for bioanalysis
MWJ Van Hout, HAG Niederländer… - Handbook of Analytical …, 2003 - Elsevier
Increasing knowledge of the working mechanisms of drugs has led to the development of
very potent drugs. Hence, the administered dosages are small, and consequently, the …
very potent drugs. Hence, the administered dosages are small, and consequently, the …
The American Dream
GJ de Jong - Bestuurskundige Berichten, 1991 - scholarlypublications …
Het is donderdagmiddag vijf voor één. Ik loop gebouw 5 binnen, weet een lift in te komen,
verlaat deze weer op de tweede verdieping en loop in de richting van de B-vleugel, op zoek …
verlaat deze weer op de tweede verdieping en loop in de richting van de B-vleugel, op zoek …