{"@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/1362825896272807680.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1111/j.1365-2389.1994.tb00527.x"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2389.1994.tb00527.x"}},{"identifier":{"@type":"URI","@value":"https://bsssjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2389.1994.tb00527.x"}},{"identifier":{"@type":"NAID","@value":"80008112604"}}],"dc:title":[{"@value":"Ionic‐strength and pH effects on the sorption of cadmium and the surface charge of soils"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Summary</jats:title>\n                  <jats:p>\n                    Two Oxisols (Mena and Malanda), a Xeralf and a Xerert from Australia and an Andept (Patua) and a Fragiaqualf (Tokomaru) from New Zealand were used to examine the effect of pH and ionic strength on the surface charge of soil and sorption of cadmium. Adsorption of Cd was measured using water, 0.01 mol dmp\n                    <jats:sup>−3</jats:sup>\n                    Ca(NO\n                    <jats:sub>3</jats:sub>\n                    )\n                    <jats:sub>2</jats:sub>\n                    , and various concentrations of NaNO\n                    <jats:sub>3</jats:sub>\n                    (0.01–1.5 mol dm\n                    <jats:sup>−3</jats:sup>\n                    ) as background solutions at a range of pH values (3–8).\n                  </jats:p>\n                  <jats:p>\n                    In all soils, the net surface charge decreased with an increase in pH. The pH at which the net surface charge was zero (point of net zero charge, PZC) differed between the soils. The PZC was higher for soils dominated by variable‐charge components (Oxisols and Andept) than soils dominated by permanent charge (Xeralf, Xerert and Fragiaqualf). For all soils, the adsorption of Cd increased with an increase in pH and most of the variation in adsorption with pH was explained by the variation in negative surface charge. The effect of ionic strength on Cd adsorption varied between the soils and with the pH. In Oxisols, which are dominated by variable‐charge components, there was a characteristic pH below which increasing ionic strength of NaNO\n                    <jats:sub>3</jats:sub>\n                    increased Cd adsorption and above which the reverse occurred. In all the soils in the normal pH range (i.e. pH>PZC), the adsorption of Cd always decreased with an increase in ionic strength irrespective of pH. If increasing ionic strength decreases cation adsorption, then the potential in the plane of adsorption is negative. Also, if increasing ionic strength increases adsorption below the PZC, then the potential in the plane of adsorption must be positive. These observations suggest that, depending upon the pH and PZC, Cd is adsorbed when potential in the plane of adsorption is either positive or negative providing evidence for both specific and non‐specific adsorption of Cd. Adsorption of Cd was approximately doubled when Na rather than Ca was used as the index cation.\n                  </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1580291226767754880","@type":"Researcher","foaf:name":[{"@value":"R. NAIDU"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896272807555","@type":"Researcher","foaf:name":[{"@value":"N.S. BOLAN"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896272807553","@type":"Researcher","foaf:name":[{"@value":"R. S. KOOKANA"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825896272807554","@type":"Researcher","foaf:name":[{"@value":"K.G. TILLER"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"13510754"},{"@type":"EISSN","@value":"13652389"}],"prism:publicationName":[{"@value":"European Journal of Soil Science"}],"dc:publisher":[{"@value":"Wiley"}],"prism:publicationDate":"1994-12","prism:volume":"45","prism:number":"4","prism:startingPage":"419","prism:endingPage":"429"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2389.1994.tb00527.x"},{"@id":"https://bsssjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2389.1994.tb00527.x"}],"createdAt":"2006-07-29","modifiedAt":"2025-10-30","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1363383604714033024","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Control of climate on soil charge characteristics through organic matter and clay mineral distributions in volcanic soils of Mt. Kilimanjaro, Tanzania"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282763017040384","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"Solute Interactions in Soils in Relation to the Bioavailability and Environmental Remediation of Heavy Metals and Metalloids(<Special Issue>International Symposium: Challenges to Soil Degradation Towards Sustaining Life and Environment, Tokyo Metropolitan University Symposium Series No.2, 2009)"},{"@language":"en","@value":"Solute Interactions in Soils in Relation to the Bioavailability and Environmental Remediation of Heavy Metals and Metalloids(<Special Issue>International Symposium: Challenges to Soil Degradation Towards Sustaining Life and Environment, Tokyo Metropolitan University Symposium Series No.2, 2009)"},{"@value":"Solute interactions in soils in relation to the bioavailability and environmental remediation of heavy metals and metalloids"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282763017863040","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"Influence of Phosphate Fertilizer on Cadmium in Agricultural Soils and Crops(Symposium 3.5.1 Heavy Metal Contaminated Soils,<Special Issue>International Symposium: Soil Degradation Control, Remediation, and Reclamation, Tokyo Metropolitan University Symposium Series No.2, 2010)"},{"@language":"en","@value":"Influence of Phosphate Fertilizer on Cadmium in Agricultural Soils and Crops(Symposium 3.5.1 Heavy Metal Contaminated Soils,<Special Issue>International Symposium: Soil Degradation Control, Remediation, and Reclamation, Tokyo Metropolitan University Symposium Series No.2, 2010)"},{"@value":"Influence of phosphate fertilizer on cadmium in agricultural soils and crops"}]},{"@id":"https://cir.nii.ac.jp/crid/1520290884222711552","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@value":"粘土鉱物へのカドミウム吸着挙動からみた表面錯体構造の推定"},{"@language":"ja-Kana","@value":"ネンド コウブツ エ ノ カドミウム キュウチャク キョドウ カラ ミタ ヒョウメン サクタイ コウゾウ ノ スイテイ"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1111/j.1365-2389.1994.tb00527.x"},{"@type":"CIA","@value":"80008112604"},{"@type":"CROSSREF","@value":"10.1080/00380768.2021.1883998_references_DOI_Y0MJMjTl3XvvxqhZTripICw6sZt"}]}