Results 21 to 30 of about 719,896 (409)
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
High pressure liquid chromatography of benzimidazolcs
Pesticide Science, 1976 AbstractA laboratory‐assembled high pressure liquid chromatograph with variable wavelength ultraviolet detector is described. The chromatography of the systemic fungicides benomyl, thiabendazole, thiophanate, related fungicides and benzimidazoles (13 compounds in all) is described using reverse phase and adsorption systems.
Austin, D. J. +2 more
openaire +2 more sources
STRUCTURE OF METHYLPHEOPHORBIDE-RCI [PDF]
, 1986 he methanolic extract of the cyanobacterium (blue-green alga) Spirulina geitleri has been treated with methanolic acid to convert all chlorophyllous pigments to their methylpheophorbides.
Budzikiewicz H. +27 more
core +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
Analysis of total urinary catecholamines by liquid chromatography: methodology, routine experience and clinical interpretations of results [PDF]
, 1983 A simple routine method is described for simultaneous assay of total urinary adrenaline, noradrenaline and dopamine. The catecholamines are pre-purified on a small ion-exchange column, separated by reversed phase ion-pair liquid chromatography, and are ...
Kees, Frieder K. +2 more
core +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
A chemical study of yoghurt produced under isostatic pressure during storage [PDF]
, 2023 Yoghurt fermented under sub-lethal high pressure (10, 20, 30 and 40 MPa at 43 °C), and afterward placed under refrigeration (4 °C for 23 days) was studied and compared with yoghurt fermented at atmospheric pressure (0.1 MPa).
Delgadillo, Ivonne +7 more
core +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
Gonadotropin releasing hormone in first trimester human placenta: isolation, partial characterisation and in vitro biosynthesis [PDF]
, 1986 Using a specific radioimmunoassay for gonadotropin releasing hormone, the presence of gonadotropin releasing hormone like material in the first trimester human placenta has been demonstrated.
Jagannadha Rao, A., Mathialagan, N.
core +1 more source
Tungsten Catalysts for Visible Light Driven Ofloxacin Photocatalytic Degradation and Hydrogen Production [PDF]
, 2022 Some tungsten catalysts of interest that are synthesized are bismuth tungstate (BT) and Tetrabutylammonium decatungstate (TBADT), using two consolidated procedures.
ANDREA SPELTINI +3 more
core +1 more source