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Determination of the Interdetector Volume by s-detection in Size-Exclusion Chromatography of Polymers with on-line Multiangle Light-Scattering Detection
Authors: Netopilík Miroslav | Podzimek Štěpán | Kratochvíl Pavel
Year: 2004
Type of publication: článek v odborném periodiku
Name of source: Journal of Chromatography A
Publisher name: Elsevier Science BV
Place: Amsterdam
Page from-to: 37-41
Titles:
Language Name Abstract Keywords
cze Stanovení mezidetektorového objemu při SEC analýze polymerů Byl stanoven interdetektorový objem při SEC chromatografii polymerů při použití MALS/koncentrační detektoru. detection; LC; multiangle light scattering detection; interdetector volume; radius of gyration; peak broadening; polymers
eng Determination of the Interdetector Volume by s-detection in Size-Exclusion Chromatography of Polymers with on-line Multiangle Light-Scattering Detection The determination of the interdetector volume (IDV) in size-exclusion chromatography (SEC) of polymers with dual multiangle light-scattering/concentration detection based on the s-detection is demonstrated. By s-detection the determination is meant of local molecular mass from a known relation between molecular mass and radius of gyration, obtained from the angle dependence of the intensity of scattered light. IDV is found basing on the stipulation of equal slope of local calibrations found by the dual light-scattering/concentration detection, referred to as the w- and s-detection. As the s-detection uses just the light-scattering detector and, therefore, is independent of the value of IDV, this quantity can be found by searching for its value that gives the local calibration dependence obtained by the dual detection closest to that determined independently by the s-detection. detection; LC; multiangle light scattering detection; interdetector volume; radius of gyration; peak broadening; polymers

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