{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360565166552908928.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1021/ac201692b"}},{"identifier":{"@type":"URI","@value":"https://pubs.acs.org/doi/pdf/10.1021/ac201692b"}},{"identifier":{"@type":"PMID","@value":"21877706"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Effects of the Spaces Available for Cations in Strongly Acidic Cation-Exchange Resins on the Exchange Equilibria by Quaternary Ammonium Ions and on the Hydration States of Metal Ions"}],"description":[{"notation":[{"@value":"The spaces (voids) available for cations in the five exchange resins with varying exchange capacities and cross-linking degrees were estimated, on the basis of the additivity of molar volumes of the constituents. Tetraalkylammonium ions (NR(4)(+); R: Me, Et, Pr) may completely exchange potassium ion on the resin having a larger void radius. In contrast, the ratio of saturated adsorption capacity to exchange capacity of the resin having a smaller void radius decreased with an increase in size of NR(4)(+) ions, due to the interionic contacts. Alkali metal ions could be exchanged quantitatively. While the hydration numbers of K(+), Rb(+), and Cs(+) were independent of the void radius, those of Li(+) and Na(+), especially Na(+), decreased with a decrease in void radius. Interionic contacts between the hydrated ions enhance the dehydration. Multivalent metal ions have the hydration numbers, comparable to or rather greater than those in water. A greater void volume available due to exchange stoichiometry released the interionic contacts and occasionally promoted the involvement of water molecules other than directly bound molecules. The close proximity between ions in the conventional ion-exchange resins having higher exchange capacities may induce varying interactions."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380566394738420608","@type":"Researcher","foaf:name":[{"@value":"Yuuya Watanabe"}],"jpcoar:affiliationName":[{"@value":"Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380566394738420610","@type":"Researcher","foaf:name":[{"@value":"Kenji Ohnaka"}],"jpcoar:affiliationName":[{"@value":"Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380566394738420612","@type":"Researcher","foaf:name":[{"@value":"Saki Fujita"}],"jpcoar:affiliationName":[{"@value":"Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380566394738420611","@type":"Researcher","foaf:name":[{"@value":"Midori Kishi"}],"jpcoar:affiliationName":[{"@value":"Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380566394738420609","@type":"Researcher","foaf:name":[{"@value":"Akio Yuchi"}],"jpcoar:affiliationName":[{"@value":"Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00032700"},{"@type":"EISSN","@value":"15206882"}],"prism:publicationName":[{"@value":"Analytical Chemistry"}],"dc:publisher":[{"@value":"American Chemical Society (ACS)"}],"prism:publicationDate":"2011-09-12","prism:volume":"83","prism:number":"19","prism:startingPage":"7480","prism:endingPage":"7485"},"reviewed":"false","url":[{"@id":"https://pubs.acs.org/doi/pdf/10.1021/ac201692b"}],"createdAt":"2011-08-30","modifiedAt":"2023-04-05","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Ions","dc:title":"Ions"},{"@id":"https://cir.nii.ac.jp/all?q=Water","dc:title":"Water"},{"@id":"https://cir.nii.ac.jp/all?q=Quaternary%20Ammonium%20Compounds","dc:title":"Quaternary Ammonium Compounds"},{"@id":"https://cir.nii.ac.jp/all?q=Metals","dc:title":"Metals"},{"@id":"https://cir.nii.ac.jp/all?q=Cations","dc:title":"Cations"},{"@id":"https://cir.nii.ac.jp/all?q=Cation%20Exchange%20Resins","dc:title":"Cation Exchange Resins"},{"@id":"https://cir.nii.ac.jp/all?q=Acids","dc:title":"Acids"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040282257138468864","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"23550093"},{"@type":"JGN","@value":"JP23550093"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23550093/"}],"notation":[{"@language":"ja","@value":"高分子電解質のイオン交換体との相互作用の解明と新規検出法の開発"},{"@language":"en","@value":"Interaction of polyelectrolytes with ion-exchangers and its analytical application"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360002216645688576","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Divalent/Monovalent Selectivities and Secondary Interactions of Multibasic Acids on Anion Exchange Resins"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292620601547008","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Thermodynamic and magnetic resonance studies on the hydration of polymers: I. 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