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Chemometric-Assisted Litmus Test: One Single Sensing Platform Adapted from 1-13 to Narrow pH Ranges.
Magnaghi, Lisa Rita; Alberti, Giancarla; Zanoni, Camilla; Guembe-Garcia, Marta; Quadrelli, Paolo; Biesuz, Raffaela.
Afiliación
  • Magnaghi LR; Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy.
  • Alberti G; Unità di Ricerca di Pavia, INSTM, Via G. Giusti 9, 50121 Firenze, Italy.
  • Zanoni C; Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy.
  • Guembe-Garcia M; Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy.
  • Quadrelli P; Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy.
  • Biesuz R; Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001 Burgos, Spain.
Sensors (Basel) ; 23(3)2023 Feb 03.
Article en En | MEDLINE | ID: mdl-36772740
A novel 3 × 4 colorimetric sensing platform, named the chemometric-assisted litmus test (CLT), has been developed by covalently anchoring commercial pH indicators to ethylene vinyl alcohol (EVOH). The proposed device can be exploited for pH determinations in a wide range from 1 to 13 and in specific narrow ranges, achieving sufficient accuracy and errors below 0.5 pH units. The experimental procedure is simple, quick and reliable; equilibration is reached in less than 2 h, CLT pictures are acquired by a camera, and data treatment is performed applying chemometric techniques such as principal component analysis (PCA) and partial least square regression (PLS) to RGB indices.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sensors (Basel) Año: 2023 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Suiza
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sensors (Basel) Año: 2023 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Suiza