Complex activity and sensor potential toward metal ions in environmental water samples of n-phthalimide azo-azomethine dyes

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creativework.keywordsAzo-azomethine dyes, Electrochemistry, Indicator, Metal ion, Sensors, Spectrometry, Titration
creativework.publisherMDPIen
dc.contributor.authorGeorgieva S.
dc.contributor.authorBezfamilnyi A.
dc.contributor.authorGeorgiev A.
dc.contributor.authorVarbanov M.
dc.date.accessioned2024-07-10T14:27:05Z
dc.date.accessioned2024-07-10T14:50:03Z
dc.date.available2024-07-10T14:27:05Z
dc.date.available2024-07-10T14:50:03Z
dc.date.issued2021-10-01
dc.description.abstractHerein, the spectral and electrochemical characterizations of three different substituted N-phthalimide azo-azomethine (NAA) dyes (L) containing an o-hydroxy group and their NAA-M(II) chelates [M(II): Cu, Ni, Co, Pb] were reported by using UV–Vis and fluorescence spectroscopy and potentiometric and voltamperometric techniques. The pK value of the dyes as well as the stoichiometry and stability of the NAA-metal chelates were studied, and the stoichiometry was found to be mostly 1:2 (ML2 ) with high complex stability constant values. The sensor activity of N-phthalimide azo-azomethine derivatives toward pH and metal ions has been also investigated and tested for indicator application in acid–base analysis and detection of Cu(II) ions in real samples of surface river water using voltamperometric detection. The results showed that one of the ligands possesses the highest electrochemical response upon binding to copper ions and could be successfully used in the analysis of copper in water at a concentration range of the analyte from 3.7 × 10−7 to 5.0 × 10−6 mol L−1, with analytical characteristics of the method being Sr = 1.5%, LOD = 3.58 µg L−1 and LOQ =11.9 µg L−1.
dc.identifier.doi10.3390/molecules26195885
dc.identifier.issn1420-3049
dc.identifier.scopusSCOPUS_ID:85116149439en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/673
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85116149439&origin=inward
dc.titleComplex activity and sensor potential toward metal ions in environmental water samples of n-phthalimide azo-azomethine dyes
dc.typeArticle
oaire.citation.issue19
oaire.citation.volume26
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