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Chemometric-Assisted Litmus Test: One Single Sensing Platform Adapted from 1–13 to Narrow pH Ranges

Articolo
Data di Pubblicazione:
2023
Abstract:
: 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.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
PCA; PLS; analytical chemistry; chemometrics; colorimetric sensors; pH sensors; polymer sensors
Elenco autori:
Magnaghi, Lisa Rita; Alberti, Giancarla; Zanoni, Camilla; Guembe-Garcia, Marta; Quadrelli, Paolo; Biesuz, Raffaela
Autori di Ateneo:
ALBERTI GIANCARLA
BIESUZ RAFFAELA
MAGNAGHI LISA RITA
QUADRELLI PAOLO
ZANONI Camilla
Link alla scheda completa:
https://iris.unipv.it/handle/11571/1498359
Pubblicato in:
SENSORS
Journal
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URL

https://www.mdpi.com/1424-8220/23/3/1696
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