Results 331 to 340 of about 719,896 (409)

Direct microsequence analysis of polypeptides using an improved sequenator, a nonprotein carrier (polybrene), and high pressure liquid chromatography.

Biochemistry, 1978
We have combined the use of a nonprotein carrier (Polybrene), high pressure liquid chromatography, and modifications in Edman chemistry with the improvements of a commercial spinning cup sequenator suggested by Wittmann-Liebold [Wittmann-Liebold, B ...
M. Hunkapiller, L. Hood
semanticscholar   +1 more source

High-pressure liquid chromatography of carbohydrates

Journal of Chromatography A, 1974
Abstract A procedure is described for the separation of water-soluble wood polysaccharides on Bio-Glas (granular porous glass) and Bio-Gel P (polyacrylamide) packed columns using high-pressure liquid chromatography (HPLC). An example of HPLC employing non-aqueous solvent systems and EM Gel OR-PVA (vinyl acetate copolymer) type packing materials is ...
Gary D. McGinnis, Greg P. Belue
openaire   +2 more sources

Benzo[a]pyrene Metabolites: Efficient and Rapid Separation by High-Pressure Liquid Chromatography

Science, 1974
High-pressure liquid chromatography can separate eight metabolites of benzo[a] pyrene formed by rat liver microsomes. This method offers major advantages over previous techniques used for the separation of oxygenated polycyclic aromatic hydrocarbons.
J. Selkirk, R. G. Croy, H. Gelboin
semanticscholar   +1 more source

High-pressure liquid chromatography on triacetylcellulose

Journal of Chromatography A, 1983
Abstract Microcrystalline triacetylcellulose ( d p = 10–20 μm) was used for analytical liquid chromatography at pressures around 50 bar. 1,3,5-Tri- tert .-butylbenzene is proposed as a compound which is not retained on this sorbent. Thus, reliable information about porosity, linear flow-rates, u , and relative retentions become available for the ...
Karl-Heinz Rimböck, Albrecht Mannschreck, H. Koller   +2 more
openaire   +2 more sources

Laboratory Automation of High‐Pressure Liquid Chromatography

Journal of Pharmaceutical Sciences, 1975
An automated system for high-pressure liquid chromatography was developed. The system is built around commercial modules wherever possible, modified to varying degrees. An automatic sampler, a sample pump, a high-pressure sampling valve, a recorder with an integrator, and a high-pressure liquid chromatograph comprise the commercial instruments. Relays,
David D. Gleason, William F. Beyer
openaire   +3 more sources

Thimerosal Determination by High-Pressure Liquid Chromatography

Journal of Pharmaceutical Sciences, 1978
A sensitive and useful high-pressure liquid chromatographic method for the determination of intact thimerosal was developed. This method is extremely fast and reliable, and its inherent specificity makes it a breakthrough over other common wet chemical methods.
Roger Carey Meyer, Lawrence B. Cohn
openaire   +3 more sources

Analysis of leukotrienes by high-pressure liquid chromatography

Analytical Biochemistry, 1981
Abstract A reversed-phase high-pressure liquid chromatographic procedure has been developed to separate and quantitate leukotrienes. This procedure is based on the ultraviolet absorption of the conjugated triene moiety of these compounds and is sensitive to the nanogram level.
Robert C. Murphy, Joshua Rokach, W.Rodney Mathews   +2 more
openaire   +3 more sources

Determination of hydroxyproline by high pressure liquid chromatography

Analytical Biochemistry, 1992
A rapid, precise, and simple HPLC method provides an assay of hydroxyproline from tissue extracts or solutions of collagen. Samples are hydrolyzed with 6 N HCl, derivatized with phenyl isothiocyanate, and chromatographed on a small, C18 reverse-phase HPLC column. Hydroxyproline (Hyp) is separated from other amino acids and detected by absorption at 254
Kathleen Reagan, Graham D. Green
openaire   +2 more sources

Novel method for determination of partition coefficients of penicillins and cephalosporins by high-pressure liquid chromatography.

Journal of Pharmacy and Science, 1977
Newly defined lipophilic indexes, log k', of a series of penicillins and cephalosporins were rapidly and reliably determined by reversed-phase high-pressure liquid chromatography (HPLC) on bonded octadecylsilane supports.
T. Yamana, Akira Tsuji, Etsuko Miyamoto, Osamu Kubo   +3 more
semanticscholar   +1 more source

Plasma catecholamines in resting rainbow trout, Salmo gairdneri Richardson, by high pressure liquid chromatography*

, 1982
Plasma norepinephrine and epinephrine from cannulated trout were measured by high pressure liquid chromatography with electrochemical detection. The catecholamines were extracted with acid-washed alumina using a microfilter assembly which permitted ...
J. Woodward
semanticscholar   +1 more source