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Coaxial-Tube Quantitative Nuclear Magnetic Resonance for Various Solutions Using SI-Traceable Concentration References
https://ehime-u.repo.nii.ac.jp/records/2003165
https://ehime-u.repo.nii.ac.jp/records/2003165516c09db-a50a-47a6-934b-1748602003e3
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AA00524878_96_29_11657–11665.pdf (3.7 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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| 公開日 | 2026-02-19 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Coaxial-Tube Quantitative Nuclear Magnetic Resonance for Various Solutions Using SI-Traceable Concentration References | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| 資源タイプ | journal article | |||||||||||||
| アクセス権 | ||||||||||||||
| アクセス権 | open access | |||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||
| 著者 |
小倉, 立己
× 小倉, 立己
× 若山, 正隆
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | Quantitative nuclear magnetic resonance (qNMR) is an accepted method for determining analyte concentrations using quantitative substances in one spectrum. Conventional qNMR is performed using a mixture of analytes and reference substances. In coaxial tube NMR, two tubes are used as different solutions, similar to normal NMR spectra. Currently, coaxial tubes with various diameters are available; however, coaxial tube qNMR is limited, and a general analytical protocol is yet to be proposed. In this study, we established an effective volume ratio (EVR) measurement method using the weight density and qNMR methods. Various analyte concentrations were determined using a coaxial tube qNMR and an SI-traceable reagent. The EVR required for the qNMR concentration calculation was determined using a coefficient of variation (CV) of < 1% for an inner tube of ϕ3 mm or less. The peak integral of each substance was correlated with the effective volume, depending on the abundance of the tube and matched 1H in the solution. The T1 relaxation times differed depending on the substructure and the T1 values of the formate and OH groups varied for each tube set. Thus, each partial structural characteristic of the peak must be understood before qNMR is performed. The concentrations of various substance, including hygroscopic substances, were determined using coaxial tube qNMR. Coaxial tubes eliminate the need to mix the analyte with the reference substance; thus, we can quantify the analyte without causing pH and structural changes caused by other mixtures and reuse the analyte for other test systems. | |||||||||||||
| 言語 | en | |||||||||||||
| bibliographic_information |
en : Analytical Chemistry 巻 96, 号 29, p. 11657-11665, 発行日 2024-07-08 |
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| 出版者 | ||||||||||||||
| 出版者 | American Chemical Society (ACS) | |||||||||||||
| 言語 | en | |||||||||||||
| item_10001_source_id_9 | ||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||
| 収録物識別子 | 0003-2700 | |||||||||||||
| item_10001_source_id_11 | ||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AA00524878 | |||||||||||||
| item_10001_relation_13 | ||||||||||||||
| 関連タイプ | isVersionOf | |||||||||||||
| 識別子タイプ | PMID | |||||||||||||
| 関連識別子 | 38975800 | |||||||||||||
| item_10001_relation_14 | ||||||||||||||
| 関連タイプ | isVersionOf | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | https://doi.org/10.1021/acs.analchem.3c05078 | |||||||||||||
| 権利 | ||||||||||||||
| 言語 | en | |||||||||||||
| 権利情報 | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Analytical Chemistry, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.analchem.3c05078. | |||||||||||||
| 出版タイプ | ||||||||||||||
| 出版タイプ | AM | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||
