『徳島大学 教育・研究者情報データベース (EDB)』---[学外] /
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EID=160688EID:160688, Map:0, LastModified:2012年10月15日(月) 16:39:28, Operator:[大家 隆弘], Avail:TRUE, Censor:0, Owner:[竹内 政樹], Read:継承, Write:継承, Delete:継承.
種別 (必須): 学術論文 (審査論文) [継承]
言語 (必須): 英語 [継承]
招待 (推奨):
審査 (推奨): Peer Review [継承]
カテゴリ (推奨): 研究 [継承]
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組織 (推奨):
著者 (必須): 1. (英) Yang Bingcheng (日) (読)
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2.竹内 政樹 ([徳島大学.大学院医歯薬学研究部.薬学域.薬科学部門.創薬科学系.分析科学])
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3. (英) Dasgupta K Purnendu (日) (読)
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4. (英) Umemura Tomonari (日) (読)
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5. (英) Ueki Yuji (日) (読)
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6. (英) Tsunoda Kin-Ichi (日) (読)
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題名 (必須): (英) Tailoring elution of tetraalkylammonium ions. Ideal electrostatic selectivity elution order on a polymeric ion exchanger  (日)    [継承]
副題 (任意):
要約 (任意): (英) Although ion exchange is often depicted as a process driven by electrostatic forces, ionic solvation or hydrophobic forces contribute greatly to ion exchange selectivity and is often the dominant factor. On a variety of commercial anion exchange columns, monovalent ClO4- elutes after doubly charged SO42- and even triply charged PO43-. For identically charged alkali metal ions, electrostatic charge densities based on crystal radii would suggest Li+ to be the most strongly retained on a cation exchanger. In practice, it is typically the least strongly held cation on most cation exchangers, because of its very high hydration energy and with most eluents its capacity factor approaches zero. Even when the ion is very poorly solvated, as with tetraalkylammonium (NR4+) cations, there has never been a report on a polymeric ion exchanger of an ideal electrostatic selectivity order where NR4+ cations elute in their increasing charge density order: R = n-butyl first, followed by n-propyl, ethyl, and last, methyl. We show that this selectivity order is easily achieved on recently described methracrylate-based monolithic capillary cation exchange columns (Ueki, Y.; Umemura, T.; Li, J. X.; Odake, T; Tsunoda, K. Anal. Chem. 2004, 76, 7007-7012) with minor amounts of hydroorganic modifiers. Indeed, under such conditions, Li+ (and other alkali cations) elutes after NMe4+.  (日)    [継承]
キーワード (推奨): 1. (英) tetraalkylammonium ions (日) (読) [継承]
2. (英) monolithic column (日) (読) [継承]
3. (英) electrostatic selectivity (日) (読) [継承]
4. (英) ion exchanger (日) (読) [継承]
発行所 (推奨): アメリカ化学会 [継承]
誌名 (必須): Analytical Chemistry ([アメリカ化学会])
(pISSN: 0003-2700, eISSN: 1520-6882)

ISSN (任意): 0003-2700
ISSN: 0003-2700 (pISSN: 0003-2700, eISSN: 1520-6882)
Title: Analytical chemistry
Title(ISO): Anal Chem
Publisher: American Chemical Society
 (NLM Catalog  (Scopus  (CrossRef (Scopus information is found. [need login])
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都市 (任意): ワシントンDC (Washington, D.C./[アメリカ合衆国]) [継承]
年月日 (必須): 西暦 2007年 1月 15日 (平成 19年 1月 15日) [継承]
URL (任意):
DOI (任意): 10.1021/ac061648i    (→Scopusで検索) [継承]
PMID (任意): 17222049    (→Scopusで検索) [継承]
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備考 (任意): 1.(英) Article.Affiliation: Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.  (日)    [継承]
2.(英) Article.PublicationTypeList.PublicationType: Journal Article  (日)    [継承]

標準的な表示

和文冊子 ● Bingcheng Yang, Masaki Takeuchi, Purnendu K Dasgupta, Tomonari Umemura, Yuji Ueki and Kin-Ichi Tsunoda : Tailoring elution of tetraalkylammonium ions. Ideal electrostatic selectivity elution order on a polymeric ion exchanger, Analytical Chemistry, Vol.79, No.2, 769-772, 2007.
欧文冊子 ● Bingcheng Yang, Masaki Takeuchi, Purnendu K Dasgupta, Tomonari Umemura, Yuji Ueki and Kin-Ichi Tsunoda : Tailoring elution of tetraalkylammonium ions. Ideal electrostatic selectivity elution order on a polymeric ion exchanger, Analytical Chemistry, Vol.79, No.2, 769-772, 2007.

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