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A fluorescent magnetic core-shell nanosensor for detection of copper ions in natural waters.
Namikuchi, Eliane A; Gaspar, Rafael D L; Raimundo, Ivo M; Mazali, Italo O.
Afiliação
  • Namikuchi EA; Group for Instrumentation and Automation in Analytical Chemistry, Institute of Chemistry, PO Box 6154, University of Campinas - UNICAMP, 13083-970 Campinas, SP, Brazil.
  • Gaspar RDL; Group for Instrumentation and Automation in Analytical Chemistry, Institute of Chemistry, PO Box 6154, University of Campinas - UNICAMP, 13083-970 Campinas, SP, Brazil.
  • Raimundo IM; Group for Instrumentation and Automation in Analytical Chemistry, Institute of Chemistry, PO Box 6154, University of Campinas - UNICAMP, 13083-970 Campinas, SP, Brazil. Electronic address: ivo@unicamp.br.
  • Mazali IO; Laboratory of Functional Materials, Institute of Chemistry, PO Box 6154, University of Campinas - UNICAMP, 13083-970 Campinas, SP, Brazil. Electronic address: mazali@unicamp.br.
Spectrochim Acta A Mol Biomol Spectrosc ; 300: 122915, 2023 Nov 05.
Article em En | MEDLINE | ID: mdl-37269659
A nanosensor based on magnetic core-shell nanoparticles functionalized with rhodamine derivative, N-(3-carboxy)acryloyl rhodamine B hydrazide (RhBCARB), using (3-aminopropyl)triethoxysilane (APTES) as a linker, has been synthesized for detection of Cu(II) ions in water. The magnetic nanoparticle and the modified rhodamine were fully characterized, showing a strong orange emission sensitive to Cu(II) ions. The sensor shows a linear response from 10 to 90 µg L-1, detection limit of 3 µg L-1 and no interference of Ni(II), Co(II), Cd(II), Zn(II), Pb(II), Hg(II) and Fe(II) ions. The nanosensor performance is similar to those described in the literature, being a viable option for the determination of Cu(II) ions in natural waters. In addition, the magnetic sensor can be easily removed from the reaction medium with the aid of a magnet and its signal recovered in acidic solution, allowing its reuse in subsequent analysis.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cobre / Corantes Fluorescentes Tipo de estudo: Diagnostic_studies Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Assunto da revista: BIOLOGIA MOLECULAR Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cobre / Corantes Fluorescentes Tipo de estudo: Diagnostic_studies Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Assunto da revista: BIOLOGIA MOLECULAR Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido