Results 291 to 300 of about 693,447 (358)
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Journal of Separation Science, 2017
A comparison of ultra high performance supercritical fluid chromatography, ultra high performance liquid chromatography, and gas chromatography for the separation of synthetic cathinones has been conducted.
Stephanie Carnes +6 more
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A comparison of ultra high performance supercritical fluid chromatography, ultra high performance liquid chromatography, and gas chromatography for the separation of synthetic cathinones has been conducted.
Stephanie Carnes +6 more
semanticscholar +1 more source
High performance “ionic liquid” chromatography
Chemical Communications, 2011We firstly developed high performance liquid chromatography methods with "ionic liquids" as eluents (HPILC) and successfully demonstrated the analysis of various biopolymers including scarcely soluble highly polymerized cellulose by means of HPILC with highly polar ionic liquid.
Hiroyuki Ohno +3 more
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High-performance liquid chromatography of insulin
Journal of Chromatography A, 1984The elution behaviour of a selection of sequence variant and modified insulins has been compared on a C18 reversed-phase column. Observed elution times were compared with those expected from the nature of the differences from bovine insulin. In some cases prediction rules established for peptides are adequate to explain the observed elution and in ...
S.P. Wood, A. McLeod
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High-Performance Liquid Chromatography
1988Considerable attention has recently been focused on the biosynthesis and metabolism of bile acids in patients with hepatobiliary diseases, and the development of reliable methods is urgently required for the analysis of profiles of bile acids in biological materials.
Junichi Goto, Toshio Nambara
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High-performance liquid chromatography of cardiolipin
Journal of Chromatography B: Biomedical Sciences and Applications, 1985Resolution of freshly prepared and of commercially available (degraded) samples of cardiolipin into 15-30 components has been accomplished by reversed-phase high-performance liquid chromatography using a 3-micron particulate Microsorb C18 column irrigated with linear gradients of acetonitrile--methanol--10 mM phosphate buffer pH 7.4.
Leland L. Smith, Jon I. Teng
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Journal of Clinical Endocrinology and Metabolism, 1984
This report describes a microassay for 1,25-dihydroxyvitamin D [1,25-(OH)2D] in plasma which does not require high performance liquid chromatography. The assay involves rapid extraction and preliminary purification on a C-18 Sep-Pak cartridge, followed ...
T. Reinhardt +3 more
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This report describes a microassay for 1,25-dihydroxyvitamin D [1,25-(OH)2D] in plasma which does not require high performance liquid chromatography. The assay involves rapid extraction and preliminary purification on a C-18 Sep-Pak cartridge, followed ...
T. Reinhardt +3 more
semanticscholar +1 more source
High-performance liquid chromatography of isopeptides
Journal of Chromatography A, 1986High-performance liquid chromatographic (HPLC) methods are described for the structural analysis of clavicepamines, their analogues and branched-chain polypeptides, the analysis in synthetic stages of isopeptides (analysis of half-protected derivatives and purity control of active esters) and the differentiation between alpha- and iso-peptides (such as
Gabriella Kelemen +2 more
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Journal of Separation Science, 2015
Paracetamol, caffeine and ibuprofen are found in over-the-counter pharmaceutical formulations. In this work, we propose two new methods for simultaneous determination of paracetamol, caffeine and ibuprofen in pharmaceutical formulations.
R. R. Cunha +6 more
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Paracetamol, caffeine and ibuprofen are found in over-the-counter pharmaceutical formulations. In this work, we propose two new methods for simultaneous determination of paracetamol, caffeine and ibuprofen in pharmaceutical formulations.
R. R. Cunha +6 more
semanticscholar +1 more source
High Performance Liquid Chromatography
2019High performance liquid chromatography (HPLC) is a form of liquid chromatography which is used to separate the individual components of interest present in mixture and/or dissolved in sample solution. It is based on pumping of mobile phase through the packed column under high pressure.
Muhammad Sajid Hamid Akash +1 more
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High-performance liquid chromatography of proteins
Journal of Chromatography A, 1976Proteins were separated on microparticulate bonded phase steric exclusion and anion-exchange chromatography supports. A post-column enzyme detector was developed which gives a specific and sensitive response for enzymes. The three iso-enzymes of creatine phosphokinase were separated and assayed in 4 min and the five isoenzymes of lactic dehydrogenase ...
Karen M. Gooding +2 more
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