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Binding of proton and iron to lignite humic acid size-fractions in aqueous matrix
https://doi.org/10.24517/00051313
https://doi.org/10.24517/0005131302cef0ee-5ea7-4f36-98fc-7f2a5a2fde81
| 名前 / ファイル | ライセンス | アクション |
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SC-PR-HASEGAWA-H-241.pdf (737.6 kB)
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||
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| 公開日 | 2018-06-29 | |||||||
| タイトル | ||||||||
| タイトル | Binding of proton and iron to lignite humic acid size-fractions in aqueous matrix | |||||||
| 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 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.24517/00051313 | |||||||
| ID登録タイプ | JaLC | |||||||
| 著者 |
Begum, Zinnat A.
× Begum, Zinnat A.× Rahman, Ismail M.M.× Tate, Yousuke× Ichijo, Toshiharu× Hasegawa, Hiroshi |
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| 著者別表示 |
長谷川, 浩
× 長谷川, 浩
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| 提供者所属 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 金沢大学理工研究域物質化学系 | |||||||
| 書誌情報 |
Journal of Molecular Liquids 巻 254, p. 241-247, 発行日 2018-03-15 |
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| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0167-7322 | |||||||
| NCID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA10636062 | |||||||
| DOI | ||||||||
| 関連タイプ | isVersionOf | |||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | 10.1016/j.molliq.2018.01.104 | |||||||
| 出版者 | ||||||||
| 出版者 | Elsevier B.V. | |||||||
| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | The bioavailability of trivalent iron (Fe3+) to plants can be enhanced using fertilizer solutions containing humic acids (HA) as manifested from the increased crop yield at an iron stress conditions. The lignite-derived HA (HAlignite) facilitates higher diffusion of Fe3+ between the soil layers as attributable to more number of reactive sites in the assemblage compared to those from other origins. In the current work, the proton-binding of HAlignite size-fractions (5–10, 10–30, 30–100, and >100 kDa), as segmented based on the molecular weight distribution, and their complexation with Fe3+ have been studied at varying pH ranging from low to high. The protonation or formation of Fe3+-complexes exhibited a comparable pattern despite the differences in the conformational distribution of HAlignite size-fractions. The protonation behavior specified that the behavior of HAlignite size-fractions has similarity with that of a dibasic acid. The results are interpreted using reactive structural units (RSU) concept to show that the carboxyl and phenolic-hydroxyl groups in the HAlignite size-fractions simultaneously available as the Fe3+-binding sites. The stability constants for larger MW fractions of HAlignite (>100 kDa) was the lowest, as attributed to the increased aggregation rate in an aqueous matrix. The trend in conditional stability constants of HAlignite-size fractions and other Fe-chelators point to a better Fe-binding capability of HAlignite (30–100 kDa) size-fraction than the biodegradable alternatives (GLDA, HIDS, EDDS, IDSA, or NTA), while the Fe-interaction was stronger with classical synthetic chelators (EDTA, DTPA, or EDDHA). © 2018 Elsevier B.V. | |||||||
| 内容記述 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | Embargo Period 12 months | |||||||
| 権利 | ||||||||
| 権利情報 | Copyright © 2018 Elsevier B.V. (CC-BY-NC-ND) | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | AM | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||
| 関連URI | ||||||||
| 識別子タイプ | URI | |||||||
| 関連識別子 | http://www.elsevier.com/locate/issn/01677322 | |||||||
| 関連名称 | http://www.elsevier.com/locate/issn/01677322 | |||||||
