Výsledky vyhledávání - "Susanne D. Riegel"

Analysis of lignins using 31P benchtop NMR spectroscopy: quantitative assessment of substructures and comparison to high-field NMR

Autor: Juan F. Araneda, Ian W. Burton, Michael Paleologou, Susanne D. Riegel, Matthew C. Leclerc

Publikováno v: Canadian Journal of Chemistry. 100:799-808

Lignin is quickly emerging as a biomass-derived source for the production of some crucial organic chemistry building blocks, typically obtained from unsustainable and non-renewable petroleum feedstocks. As a complex polymer, lignin characterization i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a2d6dbad21308f444854d08be9f63712
https://doi.org/10.1139/cjc-2022-0041

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Benchtop nuclear magnetic resonance performance evaluation according to ASTM E691–22 on a population of instruments: Molar substitution determination in hydroxypropyl betadex as a case study for use in quality control environments

Autor: Juan F. Araneda, Matthew C. Leclerc, Susanne D. Riegel

Publikováno v: Magnetic Resonance in Chemistry.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12a57b81b02141843c26838cc933a9f3
https://doi.org/10.1002/mrc.5351

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Author response for 'Benchtop Nuclear Magnetic Resonance Performance Evaluation According to ASTM E691‐22 on a Population of Instruments: Molar Substitution Determination in Hydroxypropyl Betadex as a Case Study for Use in Quality Control Environments'

Autor: null Juan F. Araneda, null Matthew C. Leclerc, null Susanne D. Riegel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46564c77e7eb28810f474a826102e1ba
https://doi.org/10.1002/mrc.5351/v2/response1

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Identification of seven psychedelic 2,5‐dimethoxy‐phenylethyl‐amine‐based designer drugs via benchtop 1 H nuclear magnetic resonance spectroscopy

Autor: Marion Baumgarte, Marie Lange, Susanne D. Riegel, Alexander F. G. Maier, Juan F. Araneda

Publikováno v: Magnetic Resonance in Chemistry. 61:66-72

The dissemination of spectral information of new psychoactive substances (NPS) acquired on benchtop nuclear magnetic resonance (NMR) spectrometers is of high importance considering the emerging application of such portable and accessible instruments

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3fd09c6650c7ecd2ab68f51a9cb0848
https://doi.org/10.1002/mrc.5205

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Incorporating Benchtop NMR Spectrometers in the Undergraduate Lab: Understanding Resolution and Circumventing Second-Order Effects

Autor: Juan F. Araneda, Susanne D. Riegel, Thaís Mendonça Barbosa, Paul Hui, Matthew C. Leclerc, Jonathan Ma, Alexander F. G. Maier

Publikováno v: Journal of Chemical Education. 98:1227-1232

Nuclear magnetic resonance (NMR) spectroscopy is commonly introduced to students in the classroom, but its hands-on use in undergraduate laboratories is far less common. The significant costs to purchase and maintain a traditional high-field NMR spec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d00c5fe1c4e92861df9ba5357674499
https://doi.org/10.1021/acs.jchemed.0c01182

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Lithium-7 qNMR as a method to quantify lithium content in brines using benchtop NMR

Autor: Juan F. Araneda, Rodrigo Mercado, Susanne D. Riegel, Christopher Green, Paul Hui, Garett M. Leskowitz

Publikováno v: The Analyst. 146:882-888

A novel 7Li quantitative NMR (qNMR) method to analyze lithium was developed to determine the lithium content in real brine samples using benchtop NMR instruments. The method was validated, and limits of detection and quantification of 40 and 100 ppm,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::221d72767d1e5f6d7633844a7a39e212
https://doi.org/10.1039/d0an02088e

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Quantitative analysis of cannabinoids using benchtop NMR instruments

Autor: Juan F. Araneda, Neil Spingarn, Terry Chu, Susanne D. Riegel, Matthew C. Leclerc

Publikováno v: Analytical Methods. 12:4853-4857

The quantification of cannabinoids is an essential part of cannabis profiling and testing, whether for medical or recreational use. As regulatory bodies continue to increase testing requirements for these products, it is crucial that alternative and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbf186300b8d2f419d68dba388160174
https://doi.org/10.1039/d0ay01511c

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3,4-Methylenedioxymethamphetamine quantification via benchtop

Autor: Anca, Frinculescu, Alexander F G, Maier, Trevor, Shine, John, Ramsey, Juan F, Araneda, Susanne D, Riegel, Nunzianda, Frascione, Vincenzo, Abbate

Publikováno v: Journal of pharmaceutical and biomedical analysis. 214

We describe a method validation for the quantification of 3,4-methylenedioxymethamphetamine (MDMA) in tablets based on the United Nations Office on Drugs and Crime (UNODC) guideline for quantitative Nuclear Magnetic Resonance analysis (qNMR). qNMR ex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::0b659fa77757573d1f56359782fd268d
https://pubmed.ncbi.nlm.nih.gov/36155482

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Identification of seven psychedelic 2,5-dimethoxy-phenylethyl-amine-based designer drugs via benchtop

Autor: Juan F, Araneda, Marion, Baumgarte, Marie, Lange, Alexander F G, Maier, Susanne D, Riegel

Publikováno v: Magnetic resonance in chemistry : MRCREFERENCES.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::66c56851e3c81b27f8f326329704071e
https://pubmed.ncbi.nlm.nih.gov/34404110

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