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Showing 1 to 11 of 11 for “"ELSD"”.
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Improving Evaporative Light Scattering Detector performance using Experiments and Modelling
Agilent’s Evaporative Light Scattering Detector (ELSD) detects analyte concentration and is often used in conjunction with chromatographic techniques, wherein the chromatographic eluent is atomised to produce a spray which is dried in a ‘drift-tube’ and detected via light scattering. At present, in …
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METHOD DEVELOPMENT FOR THE ANALYSIS OF PROTEINS AND SMALL
… (LIF), evaporative light scattering detection (ELSD), and mass spectrometry (MS) are detection methods commonly employed in conjunction with these separation strategies. Three distinct projects to develop and exploit such analytical technologies are described. First, few biological molecules are …
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Impact of modified carbon dioxide mobile phases on detection on packed-column supercritical fluid chromatography
… (ECD) and evaporative light scattering detector (ELSD). Response surfaces were obtained for packed-column SFC-ECD under various detector conditions to optimize the ECD for use with modified CO₂. Limits of detection, correlation coefficient, and linear dynamic range were found to vary with …
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A novel methodology for e-learning space design in HEI campuses
… and the E-learning Space Design research focus (ELSD focus), emerged as significant components in the development of a novel framework for the design of e-learning spaces. The relationship between the components is such that the design of spaces with consideration of the ELSD research focus would …
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Stanovení laktosy v mléčných výrobcích
… s detekcí rozptýleného světla po odpaření (ELSD). Cílem práce bylo ověřit, zda je touto metodou možné spolehlivě kvantifikovat obsah laktózy v reálných mléčných vzorcích po vysrážení bílkovin pomocí ethanolu. V rámci experimentu bylo analyzováno několik druhů komerčně dostupného polotučného …
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Stanovení obsahu náhradních sladidel ve žvýkačkách
… metodou vysokoúčinné kapalinové chromatografie s ELSD detekcí. Teoretická část se věnuje charakterizaci sacharidů a jejich vlivu na zdraví člověka, klasifikaci, charakterizaci vybraných náhradních sladidel a jejich využití. Dále je zde uveden stručný přehled analytických metod, kterými lze …
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Supercritical Fluid Extraction and Chromatography of Various Lipids from Soybean Lecithin
… with evaporative light scattering detection (ELSD) and mass spectrometry (MS). Four different silica-based stationary phases were studied: 2-ethylpyridine, 4-ethylpyridine, diol and conventional cyanopropyl. The influence of different mobile phase additives on the elution of phospholipids has …
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Stratégie pour l’analyse qualitative et quantitative de sirops de céréales enrichis par voie enzymatique en isomaltooligosaccharides
… de travailler en conditions isocratiques. L’HPLC-ELSD (Evaporating Light Scattering Detector) permettant de travailler en gradient d’élution, une très bonne séparation des différents DP est obtenue sur la même colonne ainsi qu’une séparation des différents DP2 et une amélioration de la …
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Promotion of Value-Added Uses of Soybeans
… column. Evaporative light scattering detection (ELSD) was used to quantify beta-sitosterol, stigmasterol, campesterol, alpha-, delta- and gamma- tocopherols, while lutein was quantified with visible light absorption at 450 nm. This method offers a more efficient alternative to separate, …
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Phytochemical studies on natural products and their biological activities against Trypanosoma
… study employed high-resolution LC-MS, HPLC-ELSD and NMR profiling to analyse the chemical composition of Holy Basil (Ocimum sanctum L.) and a range of types of propolis from various geographical areas. Subsequently, suitable methods of extraction, fractionation and identification were be …
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Analytik von phenolischen Substanzen und Epoxiden in Materialien mit Lebensmittel- und/oder dermalem Kontakt
… Epoxidkomponenten mittels RP-HPLC/UVD bzw. -ELSD Chromatographie und die Identifizierung der enthaltenen Verbindungen über RP-HPLC/ESI-MSD, konnte ein genaueres Bild über den Charakter dieser Materialen gewonnen werden. Bei den BPA- und BPF-Harzen wurden überwiegend Monomere, die …