Thermodynamic studies on the interaction between some amino acids with some rare earth metal ions in aqueous solutions
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| Title: | Thermodynamic studies on the interaction between some amino acids with some rare earth metal ions in aqueous solutions |
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| Authors: | Mohamed, AbdAllah A. abdelwah@hotmail.com, Bakr, Moustafa F.1, Abd El-Fattah, Khaled A.1 |
| Source: | Thermochimica Acta. Nov2003, Vol. 405 Issue 2, p235. 19p. |
| Subjects: | Amino acids, Glycine, Metal ions, Rare earth metals |
| Abstract: | The interactions between the amino acids (glycine and l-threonine) with some rare earth metal ions (Pr3+, Nd3+, Eu3+, Gd3+, Dy3+, Ho3+ and Yb3+) were studied at a wide range from ionic strengths (0.07–0.32 M KNO3) and temperatures (25–45 °C) in aqueous solutions by using Bjerrum potentiometric method. The stoichiometric and thermodynamic stability constants were calculated as well as the standard thermodynamic parameters (ΔG°, ΔH° and ΔS°) for all possible reactions that occur. The degree of formation ( |
| Copyright of Thermochimica Acta is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 11112456 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Thermodynamic studies on the interaction between some amino acids with some rare earth metal ions in aqueous solutions – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mohamed%2C+AbdAllah+A%2E%22">Mohamed, AbdAllah A.</searchLink><i> abdelwah@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Bakr%2C+Moustafa+F%2E%22">Bakr, Moustafa F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Abd+El-Fattah%2C+Khaled+A%2E%22">Abd El-Fattah, Khaled A.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Thermochimica+Acta%22">Thermochimica Acta</searchLink>. Nov2003, Vol. 405 Issue 2, p235. 19p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Amino+acids%22">Amino acids</searchLink><br /><searchLink fieldCode="DE" term="%22Glycine%22">Glycine</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+ions%22">Metal ions</searchLink><br /><searchLink fieldCode="DE" term="%22Rare+earth+metals%22">Rare earth metals</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The interactions between the amino acids (glycine and l-threonine) with some rare earth metal ions (Pr3+, Nd3+, Eu3+, Gd3+, Dy3+, Ho3+ and Yb3+) were studied at a wide range from ionic strengths (0.07–0.32 M KNO3) and temperatures (25–45 °C) in aqueous solutions by using Bjerrum potentiometric method. The stoichiometric and thermodynamic stability constants were calculated as well as the standard thermodynamic parameters (ΔG°, ΔH° and ΔS°) for all possible reactions that occur. The degree of formation (<F>n¯</F>) for all studied systems was determined and discussed. The thermodynamic parameters differences (ΔΔG°, ΔΔH° and ΔΔS°) were calculated and discussed to determine the factors which control these complexation processes from the thermodynamic point of view. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Thermochimica Acta is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/S0040-6031(03)00197-7 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 235 Subjects: – SubjectFull: Amino acids Type: general – SubjectFull: Glycine Type: general – SubjectFull: Metal ions Type: general – SubjectFull: Rare earth metals Type: general Titles: – TitleFull: Thermodynamic studies on the interaction between some amino acids with some rare earth metal ions in aqueous solutions Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mohamed, AbdAllah A. – PersonEntity: Name: NameFull: Bakr, Moustafa F. – PersonEntity: Name: NameFull: Abd El-Fattah, Khaled A. IsPartOfRelationships: – BibEntity: Dates: – D: 06 M: 11 Text: Nov2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 00406031 Numbering: – Type: volume Value: 405 – Type: issue Value: 2 Titles: – TitleFull: Thermochimica Acta Type: main |
| ResultId | 1 |
