Fabrication of a new samarium(III) ion-selective electrode based on 3-{[2-oxo-1(2h)-acenaphthylenyliden]amino}-2-thioxo -1,3-thiazolidin-4-one
Document title: Fabrication of a new samarium(III) ion-selective electrode based on 3-{[2-oxo-1(2h)-acenaphthylenyliden]amino}-2-thioxo -1,3-thiazolidin-4-one
Journal: Journal of the Brazilian Chemical Society
Database: PERIÓDICA
System number: 000311962
ISSN: 0103-5053
Authors: 1
2
3
Institutions: 1Islamic Azad University, Department of Chemistry, Quchan. Irán
2University of Tehran, Center of Excellence in Electrochemistry, Teherán. Irán
3Tehran University of Medical Sciences, Endocrine & Metabolism Research Center, Teherán. Irán
Year:
Volumen: 18
Number: 1
Pages: 215-222
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental
English abstract This paper introduces the development of an original PVC membrane electrode, based on 3-{[2-oxo-1(2H)-acenaphthylenyliden]amino}-2-thioxo-1,3-thiazolidin-4-one (ATTO) which has revealed to be a suitable carrier for Sm3+ ions. The resulting data illustrated that the electrode shows a Nernstian slope of 19.3 ± 0.6 mV per decade for Sm3+ ions over a broad working concentration range of 1.0 × 10-6 to 1.0 × 10-1 mol L-1. The lower detection limit was found to be equal to (5.5± 0.3) × 10-7 mol L-1 in the pH range of 3.57.5, and the response time was very short (~10 s). The potentiometric sensor displayed good selectivities for a number of cations such as alkali, alkaline earth, transition and heavy metal ions
Portuguese abstract Este trabalho apresenta o desenvolvimento de um eletrôdo de membrana de PVC, que contém 3-{[2-oxo-1(2H)-acenonaftilideno]amino}-2-tioxido-1,3-tiazolidino-4-ona (ATTO), que mostrou ser seletivo para íons Sm3+. Os dados obtidos mostram uma resposta Nernsteniana com inclinação de 19,3 ± 0,6 mV por década para íons Sm3+ em uma ampla faixa de concentração , de 1,0 × 10-6 a 1,0 × 10-1 mol L-1. O limite de detecção encontrado foi (5,5± 0.3) × 10-7 mol L-1 numa faixa de pH entre 3,5 e 7,5, com tempo de resposta pequeno (~10 s). O sensor potenciométrico mostrou boa seletividade para diferentes cátions, como os alcalinos, alcalinos terrosos e para íons de metais pesados
Disciplines: Química
Keyword: Química analítica,
Potenciometría,
Samario,
Electrodos selectivos de iones,
Membranas de PVC
Keyword: Chemistry,
Analytical chemistry,
Potentiometry,
Samarium,
Ion-selective electrodes,
PVC membranes
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