Optical sensor arrays are widely used for sensing the evolution and the identification of complex patterns of chemicals either in air or in water. This popularity stems from the fact that low-cost, ready-to-use optical devices, made available by the current commercial development of electronics commodities, are complemented by a number of low-cost chemical indicators, suitable for a wide range of applications. Among them, pH indicators, and metalloporphyrins make a solid library of molecules that can be adequately assembled for many different tasks. Here, such an array is used for the identification of toxic compounds of different origin that may be released in water distribution systems as a consequence of either accidents or deliberated contaminations. The compounds considered are intermediate products of chemical industry (dimethyl methylphosphonate and cyclohexanone), drugs (5-Fluorouracil and piperazine) and pesticides (imidacloprid and paraoxon). Results show that the sensors are sensitive, but with low selectivity, in the interval from 10−7 mol L−1 to 10−4 mol L−1. The sensor signals show a linear correlation with the logarithm of the concentration. Although the limited selectivity of individual sensors, the different sensitivity patterns allow for a clear identification of the compounds, independent of their concentration. © 2016 Elsevier B.V.

GUANAIS GONCALVES, C., Dini, F., Martinelli, E., Catini, A., Lundström, I., Paolesse, R., et al. (2016). Detection of diverse potential threats in water with an array of optical sensors. SENSORS AND ACTUATORS. B, CHEMICAL, 236, 997-1004 [10.1016/j.snb.2016.04.080].

Detection of diverse potential threats in water with an array of optical sensors

GUANAIS GONCALVES, CARLA;DINI, FRANCESCA;MARTINELLI, EUGENIO;CATINI, ALEXANDRO;PAOLESSE, ROBERTO;DI NATALE, CORRADO
2016-01-01

Abstract

Optical sensor arrays are widely used for sensing the evolution and the identification of complex patterns of chemicals either in air or in water. This popularity stems from the fact that low-cost, ready-to-use optical devices, made available by the current commercial development of electronics commodities, are complemented by a number of low-cost chemical indicators, suitable for a wide range of applications. Among them, pH indicators, and metalloporphyrins make a solid library of molecules that can be adequately assembled for many different tasks. Here, such an array is used for the identification of toxic compounds of different origin that may be released in water distribution systems as a consequence of either accidents or deliberated contaminations. The compounds considered are intermediate products of chemical industry (dimethyl methylphosphonate and cyclohexanone), drugs (5-Fluorouracil and piperazine) and pesticides (imidacloprid and paraoxon). Results show that the sensors are sensitive, but with low selectivity, in the interval from 10−7 mol L−1 to 10−4 mol L−1. The sensor signals show a linear correlation with the logarithm of the concentration. Although the limited selectivity of individual sensors, the different sensitivity patterns allow for a clear identification of the compounds, independent of their concentration. © 2016 Elsevier B.V.
2016
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/07 - FONDAMENTI CHIMICI DELLE TECNOLOGIE
Settore ING-INF/01 - ELETTRONICA
English
Con Impact Factor ISI
Chemical industry; Electronic tongues; Esters; Indicators (chemical); Optical sensors; Water distribution systems; Water supply systems, Color indicator; Commercial development; Different origins; Dimethyl methylphosphonate; Intermediate product; Linear correlation; Metallo-porphyrins; Potential threats, Chemical compounds; Color indicators; Electronic tongue; Optical sensors
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989962643&doi=10.1016/j.snb.2016.04.080&partnerID=40&md5=7ae691ba1af505daf7e5190a0903f097
GUANAIS GONCALVES, C., Dini, F., Martinelli, E., Catini, A., Lundström, I., Paolesse, R., et al. (2016). Detection of diverse potential threats in water with an array of optical sensors. SENSORS AND ACTUATORS. B, CHEMICAL, 236, 997-1004 [10.1016/j.snb.2016.04.080].
GUANAIS GONCALVES, C; Dini, F; Martinelli, E; Catini, A; Lundström, I; Paolesse, R; DI NATALE, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/175270
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