Výsledky vyhledávání - "Kovats retention index"

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Development and application of an in-house library and workflow for gas chromatography–electron ionization–accurate-mass/high-resolution mass spectrometry screening of environmental samples

Autor: Verónica Castro, José Benito Quintana, Javier López-Vázquez, Nieves Carro, Julio Cobas, Denis Bilbao, Rafael Cela, Rosario Rodil

Publikováno v: Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
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This work presents an optimized gas chromatography–electron ionization–high-resolution mass spectrometry (GC-EI-HRMS) screening method. Different method parameters affecting data processing with the Agilent Unknowns Analysis SureMass deconvolutio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4211204135298339af887e9140ff7bc4
https://doi.org/10.1007/s00216-021-03810-w

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Akademický článek

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Maximizing the freeze-dried extract yield by considering the solvent retention index: Extraction kinetics and characterization of Moringa oleifera leaves extracts

Autor: Sagrario Beltrán, S. Mehdi Niknam, María Teresa Sanz, Óscar Benito-Román, Beatriz Blanco, Mahdi Kashaninejad

Publikováno v: Repositorio Institucional de la Universidad de Burgos (RIUBU)
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A complete chemical characterization of Moringa oleifera leaves was carried out showing a high content of extractives. Extraction kinetics of bioactive compounds present in this fraction were performed by conventional and ultrasound assisted extracti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80108767b048f93c49fbe9b226b9285c
https://doi.org/10.1016/j.fbp.2021.09.008

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GC/EI-MS method for the determination of phytosterols in vegetable oils

Autor: Sarah Schlag, Walter Vetter, Yining Huang

Publikováno v: Analytical and Bioanalytical Chemistry

Sterols are a highly complex group of lipophilic compounds present in the unsaponifiable matter of virtually all living organisms. In this study, we developed a novel gas chromatography with mass spectrometry selected ion monitoring (GC/MS-SIM) metho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::120ae1201ec43420413ca3bc0eca9405
http://europepmc.org/articles/PMC8724214

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Recurrent Approximation of Retention Parameters of N-Substituted p-Toluenesulfonamides in Reversed-Phase High Performance Liquid Chromatography for Revealing the Formation of Their Hydrates

Autor: Igor G. Zenkevich, D. A. Nikitina, Tatiana A. Kornilova

Publikováno v: Russian Journal of Physical Chemistry A. 95:1931-1941

Recurrent approximation of retention times in reversed-phase high performance liquid chromatography (RP-HPLC), tR(C + ΔC) = atR(C) + b, where C is the acetonitrile concentration in the eluent, and ΔC is the constant “step” of its variation, for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c04785fe578b29266083623fc9a20762
https://doi.org/10.1134/s0036024421090326

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Determination of Anomalies of Gas Chromatographic Retention Indices for Homologs Based on Their Homologous Increments

Autor: I. G. Zenkevich

Publikováno v: Russian Journal of Physical Chemistry A. 95:1720-1728

Possible anomalies of gas chromatographic retention indices (RIs) for homologs are difficult to determine as they are masked by the “normal” homologous dependence (~100 index units per CH2 homologous difference). A comparison of the RIs of homolo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2c6f21b9bbf2ce528947279ea2a564d
https://doi.org/10.1134/s003602442107030x

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QSPR Models for Predicting Retention Indices of Polygonum minus Huds. Essential Oil Composition Using GA-BWMLR and GA-BPANN Methods

Autor: Mohammad Alimoradi, Majid Ramazani, Atefehsadat Navabi, Tahereh Momeni Isfahani

Publikováno v: Journal of Essential Oil Bearing Plants. 24:879-896

In the present study, quantitative structure-property relationship (QSPR) models were used for modeling and predicting retention index (RI) values of chemical composition in Polygonum minus essenti...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6bb5f6edf3ed37c73def4b2f2e36865d
https://doi.org/10.1080/0972060x.2021.1976284

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Statistical Evaluation of the Standard Deviation of Chromatographic Retention Time in the Capillary Column Temperature Programming Mode

Autor: O. N. Kosyreva, S. A. Dobrotin, V. I. Logutov, V. I. Abdrakhmanov

Publikováno v: Journal of Analytical Chemistry. 76:641-652

In the qualitative analysis of complex mixtures of unknown composition, a promising direction for increasing the reliability of the identification of substances is the joint use of several simultaneously determined analytical parameters. A combinatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::abbaab6ff209de638322898f9d9b69eb
https://doi.org/10.1134/s1061934821050026

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Comprehensive Screening of Polycyclic Aromatic Hydrocarbons and Similar Compounds Using GC–APLI–TIMS–TOFMS/GC–EI–MS

Autor: Francisco Fernandez-Lima, Clement A. Olanrewaju, Cesar E. Ramirez

Publikováno v: Analytical Chemistry. 93:6080-6087

In the present work, a novel workflow based on complementary gas-phase separations for the identification of isomeric PAHs from complex mixtures is described. This is the first report on the coupling of gas chromatography (GC), atmospheric pressure l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7bd395c36c975c2a7b6af86c5399634d
https://doi.org/10.1021/acs.analchem.0c04525

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