Item type |
文献 / Documents(1) |
公開日 |
2020-01-30 |
アクセス権 |
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アクセス権 |
open access |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
出版社版DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.aca.2019.12.045 |
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言語 |
ja |
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関連名称 |
10.1016/j.aca.2019.12.045 |
出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
タイトル |
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タイトル |
Track-etched membrane-based dual-electrode coulometric detector for microbore/capillary high-performance liquid chromatography |
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言語 |
en |
著者 |
水口, 仁志
ニシモリ, ダイチ
桑原, 知彦
竹内, 政樹
イイヤマ, マサミツ
髙栁, 俊夫
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The electrochemical flow cell containing track-etched microporous membrane electrodes was applied to a dual-electrode coulometric detector for microbore/capillary HPLC with a small injection volume and low eluent flow rate. The proposed flow cell with a 0.1-mm diameter inlet channel gave a detection volume of 0.08 nL per electrode, which was determined by the eluent flow through the electrode. For the dual-electrode detector, the calculated volume was 0.24 nL. The efficiency of electrooxidation of L-ascorbic acid increased as the flow rate decreased and was close to 100% when the flow rate was below 50 µL min−1, which is a common flow rate in microbore or capillary liquid chromatography. Catecholamines, such as noradrenaline, adrenaline, and dopamine, were detected by total conversion with two-electron oxidation in the potential range from 0.8 to 1.0 V vs. Ag/AgCl after separation with a microbore column. These peaks were accompanied by corresponding cathodic peaks derived from quasi-stable electrooxidation products of the catecholamines. The detection limits of noradrenaline, adrenaline, and dopamine were 0.1, 0.1, and 0.2 μM, respectively. The RSD values for five replicate measurements of 5.0 μM of these compounds were 0.9%, 0.7%, and 1.5%, respectively. Coulometric detection was also demonstrated by determination of catecholamines in pharmaceuticals. |
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言語 |
en |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Track-etched membrane filter |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Coulometric detection |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Microbore/capillary liquid chromatography |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Electrochemical detector |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Dual-electrode system |
書誌情報 |
en : Analytica Chimica Acta
巻 1102,
p. 46-52,
発行日 2019-12-18
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収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
00032670 |
収録物ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00524834 |
収録物ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA11523130 |
出版者 |
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出版者 |
Elsevier |
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言語 |
en |
権利情報 |
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言語 |
en |
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権利情報 |
© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
EID |
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識別子 |
361978 |
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識別子タイプ |
URI |
言語 |
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言語 |
eng |