書誌事項
- タイトル別名
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- Adsorption behaviors of some metal ions on chitosan modified with EDTA-type ligand.
- EDTAガタ カガク シュウショク キトサン ノ キンゾク イオン キュウチャ
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Ethylenediaminetetraacetic acid-type chitosan (EDTA-type chitosan) was synthesized to examine its adsorption behavior for several base metal ions as well as a series of rare earth metals from dilute sulfuric acid solution. The EDTA type functional group was incorporated onto chitosan nearly quantitatively. Unlike adsorption with original chitosan, that with EDTA-type chitosan takes place at a lower pH than that with diethylenetriamine-pentaacetic acid-type chitosan (DTPA-type chitosan); for example, copper(II)was adsorped at pH=0 on EDTA-type chitosan but at pH=4 on original chitosan. The selectivity series for the adsorption of base metals was as follows: Cu2+ ≅ MoO22+ > Ni2+ > VO2+ > Zn2+ ≥ Co2+ > Al3+. The plots of the distribution ratio of trivalent rare earths against pH lie on straight lines with a slope of 3, suggesting that adsorption takes place by a cation-exchange mechanism. The apparent equilibrium constants for adsorption on EDTA-type chitosan were evaluated as well as those on DTPA-type chitosan. The sequence of the apparent equilibrium constants with a series of rare earths was roughly consistent with that of the stability constants in the case of EDTA-type chitosan as well as with DTPA-type chitosan. Consequently, EDTA and DTPA are still functional after immobilization on chitosan. The EDTA-type chitosan seems to exhibit promise for the mutual separation of adjacent rare earths except for middle rare earths.
収録刊行物
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- 分析化学
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分析化学 44 (4), 283-287, 1995
公益社団法人 日本分析化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679029717760
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- NII論文ID
- 110002906930
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- NII書誌ID
- AN00222633
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- COI
- 1:CAS:528:DyaK2MXltVWnt7s%3D
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- NDL書誌ID
- 3616833
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- ISSN
- 05251931
- http://id.crossref.org/issn/05251931
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可