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Title: Screen-printed electrodes for the voltammetric sensing of benzotriazoles in water
Author: Muschietti, Alessandra
Serrano i Plana, Núria
Ariño Blasco, Cristina
Díaz Cruz, Silvia
Díaz Cruz, José Manuel
Keywords: Anàlisi electroquímica
Detectors químics
Electrochemical analysis
Chemical detectors
Issue Date: 26-Mar-2020
Publisher: MDPI
Abstract: Benzotriazoles (BZTs) are high production volume industrial chemicals that are used in various applications such as corrosion inhibitors, antifreeze agents, and UV radiation stabilizers. Given their potential ecotoxicological implications for different ecosystems and in human health, as well as their poor biodegradability, they are of increasing concern. In this study, a new voltammetric method using commercial screen-printed electrodes (SPEs) has been developed for the sensing of BZTs in water samples to help in their environmental monitoring. To this end, different types of SPEs based on carbon nanoallotropes and copper were tested under several experimental conditions to determine the two BZTs most frequently detected in the environment: 1H-benzotriazole (BZT) and 5-methyl-1H-benzotriazole (Me-BZT, tolyltriazole) as model compounds for BZTs. Carbon nanofibers electrodes exhibited the best performance, allowing detection limits as low as 0.4 mg L-1 for both BZTs, with repeatability and reproducibility of ca. 5%. The applicability of the method was tested through the determination of BZT in spiked drinking water samples, suggesting its suitability for the sensing of samples heavily polluted with BZTs.
Note: Reproducció del document publicat a:
It is part of: Sensors, 2020, vol. 20, num. 7, p. 1839
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ISSN: 1424-8220
Appears in Collections:Articles publicats en revistes (Enginyeria Química i Química Analítica)

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