Zobrazeno 1 - 10 of 34 pro vyhledávání: '"S.J. Kok"'
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Independent assessment of matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) sample preparation quality: Effect of sample preparation on MALDI-MS of synthetic polymers
Autor: S.J. Kok, Pieter C. Kooijman, Maarten Honing
Publikováno v: Rapid Communications in Mass Spectrometry. 31:362-370
Rationale Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) provides detailed and in-depth information about the molecular characteristics of synthetic polymers. To obtain the most accurate results the sample preparation parame
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e8a1fce47532552f267499837abf44b
https://doi.org/10.1002/rcm.7798
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2
Independent assessment of matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) sample preparation quality: A novel statistical approach for quality scoring
Autor: Pieter C. Kooijman, Jos Weusten, S.J. Kok, Maarten Honing
Publikováno v: Analytica Chimica Acta, 919, 1-10. Elsevier
Kooijman, P C, Kok, S J, Weusten, J J A M & Honing, M 2016, ' Independent assessment of matrix-assisted laser desorption/ionization mass spectrometry (MALSI-MS) sample preoaration quality: A novel statistical approach for quality scoring. ', Analytica Chimica Acta, vol. 919, pp. 1-10 . https://doi.org/10.1016/j.aca.2016.03.031
Analytica Chimica Acta, 919, 1-10. Elsevier Science
Preparation of samples according to an optimized method is crucial for accurate determination of polymer sample characteristics by Matrix-Assisted Laser Desorption Ionization (MALDI) analysis. Sample preparation conditions such as matrix choice, cati
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::622fbc6d585348dc7283cc89e27eb581
https://doi.org/10.1016/j.aca.2016.03.031
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3
Capillary electrophoresis with laser-induced fluorescence detection for natively fluorescent analytes
Autor: C. Gooijer, S.J. Kok, Freek Ariese
Publikováno v: Gooijer, C, Kok, S J & Ariese, F 2000, ' Capillary electrophoresis with laser-induced fluorescence detection for natively fluorescent analytes ', Analusis, vol. 28, no. 8, pp. 679-685 . https://doi.org/10.1051/analusis:2000280679
Analusis, 28(8), 679-685. EDP Sciences
Laser-induced fluorescence (LIF) detection systems for capillary electrophoresis (CE) are nowadays widely available. Many classes of analytes show native fluorescence, but often only upon absorption of short-wavelength UV light. Unfortunately, most C
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ad84616bd7a0b3740f40ec489a9ab4a
https://doi.org/10.1051/analusis:2000280679
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4
Determination of pesticides in vegetables using large-volume injection column liquid chromatography-electrospray tandem mass spectrometry
Autor: M. P. Hofman, Wilfried M. A. Niessen, Udo A. Th. Brinkman, A.C. Hogenboom, S.J. Kok
Publikováno v: Journal of Chromatography A, 892(1-2), 379-390. Elsevier
Hogenboom, A C, Hofman, M P, Kok, S J, Niessen, W M A & Brinkman, U A T 2000, ' Determination of pesticides in vegetables using large-volume injection column liquid chromatography-electrospray tandem mass spectrometry ', Journal of Chromatography A, vol. 892, no. 1-2, pp. 379-390 . https://doi.org/10.1016/S0021-9673(00)00182-5
Direct injection of a large volume (900 μl) of a sample extract onto a liquid chromatographic (LC) column, LC separation and electrospray tandem mass spectrometric detection were used for the quantitative analysis of a wide polarity range of pestici
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::400cf7095b0f9c1737c4f66b7ce698a9
https://hdl.handle.net/1871/25170
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5
Comprehensive two-dimensional liquid chromatography with on-line Fourier-transform-infrared-spectroscopy detection for the characterization of copolymers
Autor: Th. Hankemeier, S.J. Kok, Peter J. Schoenmakers
Publikováno v: Journal of Chromatography A, 1-2, 1098, 104-110
The on-line coupling of comprehensive two-dimensional liquid chromatography (liquid chromatography × size-exclusion chromatography, LC × SEC) and infrared (IR) spectroscopy has been realized by means of an IR flow cell. The system has been assessed
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f637947796884fd05665b3cfd516aeb3
http://resolver.tudelft.nl/uuid:c3c200ff-a416-4854-8a01-034cc2e5c0cc
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7
Comparison of on-line flow-cell and off-line solvent-elimination interfaces for size-exclusion chromatography and Fourier-transform infrared spectroscopy in polymer analysis
Autor: Peter J. Schoenmakers, C.A. Wold, Th. Hankemeier, S.J. Kok
Publikováno v: Journal of Chromatography A, 1017, 83-96. Elsevier
Journal of Chromatography A, 1-2, 1017, 83-96
Two commercial liquid chromatography-Fourier-transform infrared spectroscopy interfaces (LC-FTIR), viz. a flow cell and a solvent-elimination interface have been assessed for use in size-exclusion chromatography (SEC) with respect to their chromatogr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85900a9352cf1c10a3d3e2da70977941
https://dare.uva.nl/personal/pure/en/publications/comparison-of-online-flowcell-and-offline-solventelimination-interfaces-for-sizeexclusion-chromatography-and-fouriertransform-infrared-spectroscopy-in-polymer-analysis(87bd2f98-ada2-4988-8a4a-cd50d2c6a745).html
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8
Fast sample preparation for analysis of tablets and capsules: the ball-mill extraction method
Autor: S.J. Kok, A.J.J. Debets
Publikováno v: Journal of pharmaceutical and biomedical analysis. 26(4)
A new ball-mill extraction method for solid dosage forms was developed. It was used for tablets, and compared with a conventional (powdering and sonication) method applied in pharmaceutical analysis of solid dosage forms. The ball-mill sample prepara
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::928392d4e6ad2a7e0728d945243ce30c
https://pubmed.ncbi.nlm.nih.gov/11516911
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9
Optimization of large-volume on-column injection conditions in gas chromatography by monitoring the actual carrier gas flow
Autor: René J. J. Vreuls, S.J. Kok, Thomas Hankemeier, Udo A. Th. Brinkman
Publikováno v: Hankemeier, T, Kok, S J, Vreuls, J J & Brinkman, U A T 1999, ' Optimization of large-volume on-column injection conditions in gas chromatography by monitoring the actual carrier gas flow. ', Journal of Chromatography A, vol. 841, pp. 75-94 . https://doi.org/10.1016/S0021-9673(99)00201-0
Journal of Chromatography A, 841, 74-94
Journal of Chromatography A, 841, 75-94. Elsevier
The change of the evaporation rate of the solvent during injection and evaporation is the most critical aspect during optimization of large-volume on-column injection conditions in gas chromatography. The change is caused by the pressure drop along t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f4615d3ca2d114dbf6d496d158cd101
https://research.vu.nl/en/publications/0449edec-8cbd-4aee-89c6-847ef2c618cb
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10
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