Results 21 to 30 of about 509,811 (262)
Environmental Disease, 2020 Aim: Quantification of urinary ortho-cresol (OC) by high pressure liquid chromatography coupled with photodiode array detector. Materials and Methods: Includes acid hydrolysis of urine, liquid–liquid extraction, and chromatography quantification of ...
Anupa Yadav +2 more
doaj +1 more source
Validation of a chromatographic method to routine analysis of trans-resveratrol and quercetin in red wines [PDF]
Pesquisa Agropecuária Brasileira, 2017 : The objective of this work was to validate a fast method with low-solvent use, for the analysis of trans-resveratrol and quercetin in red wines. The wines were prepared, using a classical method, from the grape (Vitis vinifera) cultivars Cabernet Franc,
Letícia Flores da Silva +4 more
doaj +1 more source
Enricher for Fraction of High-Pressure Liquid Chromatography [PDF]
Journal of Chromatographic Science, 2005 A device is developed for concentrating a dilute solution without losing the components with boiling points slightly higher than the solvent. The device consists of an evaporator, receptor, and approximately 100 capillaries. A dilute solution is introduced into the evaporator and heated at a lower temperature than the boiling point of the solvent with ...
Masayuki Matsui +2 more
openaire +3 more sources
Numerical Simulation of Fluid Dynamics in a Monolithic Column
Separations, 2017 As for the measurement of polycyclic aromatic hydrocarbons (PAHs), ultra-performance liquid chromatography (UPLC) is used for PAH identification and densitometry.
Kazuhiro Yamamoto, Yuuta Tajima
doaj +1 more source
Analysis of ochratoxin A in pig tissues using high pressure liquid chromatography (HPLC) and liquid chromatography tandem mass spectrometry (LC/MS/MS) as confirmative methods [PDF]
Zbornik Matice Srpske za Prirodne Nauke, 2009 Two different analytical methods for the determination and confirmation of ochratoxin A (OTA) in blood serum, kidney and liver of pigs have been compared. Sample clean-up was based on liquid-liquid phase extraction.
Milićević Dragan R. +4 more
doaj +1 more source
Ultra-High-Pressure Liquid Chromatography ☆ [PDF]
, 2017 One decade has passed since the introduction of commercial ultra-high-pressure liquid chromatography (UHPLC) technology and columns packed with sub-2-μm particles, which has led to significant improvements in separation efficiency and sample throughput. This article outlines fundamental and practical aspects of UHPLC.
Eeltink, Sebastiaan, De Vos, Jelle
openaire +2 more sources
Review of High-Speed Countercurrent Chromatography in Separation of Lanthanides and Actinides
He huaxue yu fangshe huaxue, 2022 In the field of radiochemistry, separation of lanthanides and actinides has always been one of the research hotspots. In order to achieve the burnup analysis, the lanthanide and actinide elements in the solution need to be separated.
LI Yu-hao +6 more
doaj +1 more source
Journal of Lipid Research, 1980 A three-step procedure has been developed for the separation of complex mixtures of sterol intermediates in cholesterol biosynthesis. The method has been applied to the separation of sterol intermediates formed from [14C]mevalonate by normal rat ...
E Hansbury, T J Scallen
doaj +1 more source
Effects of ropivacaine combined with morphine at 0.15 and 0.2 mg kg-1 in bitches undergoing epidural anesthesia [PDF]
Acta Cirúrgica Brasileira, 2015 PURPOSE: To investigate cardiorespiratory effects and serum concentration of ropivacaine combined with morphine at different doses.METHODS: Sixteen healthy adult female dogs weighting 9.8±4.1 kg were included in the study.
Verônica Batista de Albuquerque +6 more
doaj +2 more sources
Sterol synthesis. High-pressure liquid chromatography of C27 sterol precursors of cholesterol.
Journal of Lipid Research, 1979 Conditions have been described which permit the rapid (approximately 3.5 hr) column chromatographic separation of the acetate derivatives of a number of C27 sterol precursors of cholesterol differing only in the number and position of double bonds in the
J R Thowsen, G J Schroepfer, Jr
doaj +1 more source