| Item type |
文献 / Documents(1) |
| 公開日 |
2022-03-31 |
| アクセス権 |
|
|
アクセス権 |
open access |
| 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 |
| 出版社版DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.2116/analsci.19P401 |
|
|
言語 |
ja |
|
|
関連名称 |
10.2116/analsci.19P401 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Introduction of Air-Segmentation Approach to Flow Titration by Feedback-based and Subsequent Fixed Triangular Wave-controlled Flow Ratiometry |
|
言語 |
en |
| 著者 |
オチアイ, ジュンヤ
オカ, サワコ
ヒラサカ, トモコ
トミヤマ, エリナ
クボ, ヒロヤ
オカモト, カズマサ
竹内, 政樹
田中, 秀治
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
An air-segmentation approach has been introduced to a feedback-based and subsequent fixed triangular wave-controlled flow ratiometry to suppress axial dispersion in flow titration. The flow rate of a base solution containing an indicator is linearly varied with a control signal, Vc, supplied by a computer. The solution is merged with an acid solution under a constant total flow rate. Air is introduced to the merged solution in order to segment the solution with air bubbles. Both phases are led to a UV/Vis detector without phase separation. Air signals are removed by signal processing. The effect of the lag time between the merging of solutions upstream and the sensing of the corresponding signal downstream is offset by feedback-based upward and downward Vc scans, and thus the Vc that gives the equivalence composition is determined. Subsequently, fixed triangular wave control is applied to a narrower Vc range with a higher scan rate to enhance the throughput rate (maximally 11.8 titrations/min). Air-segmentation has been found to be effective to reduce axial dispersion and to preserve the titrand/titrant composition upon their just being merged. Consequently, the applicable range is extended especially to lower titrand concentration. The proposed method has been successfully applied to various acid-base titrations, including the nonaqueous titration of the Japanese Pharmacopoeia drug. |
|
言語 |
en |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Flow titration |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
flow ratiometry |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
feedback-based control |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
triangular wave control |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
air-segmentation |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
nonaqueous titration |
| 書誌情報 |
en : Analytical Sciences
巻 36,
号 6,
p. 703-708,
発行日 2020-06-10
|
| 収録物ID |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
13482246 |
| 収録物ID |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
09106340 |
| 収録物ID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA10500785 |
| 出版者 |
|
|
出版者 |
The Japan Society for Analytical Chemistry |
|
言語 |
en |
| EID |
|
|
識別子 |
366405 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
analsci_36_6_703.pdf (1.93 MB)
