Screen-Printed Electrodes for the Voltammetric Sensing of Benzotriazoles in Water

Muschietti, Alessandra; Serrano, Núria; Ariño, Cristina; Díaz˗Cruz, M. Silvia; Dı́az-Cruz, José Manuel

doi:10.3390/s20071839

Cited by 6 publications

(3 citation statements)

References 35 publications

(52 reference statements)

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“…For this purpose, we have evaluated the possibilities of a single, commercially available, disposable carbon screen-printed electrode (SPCE) as the only sensor used for cyclic voltammetric (CV) measurements. The choice of this particular material (carbon) for the screen-printed device was made not only in terms of its simplicity, reproducibility and low cost, but also considering the excellent results provided by SPCE units in previous investigations of our research group involving organic substances [32,33].…”

Section: Introductionmentioning

confidence: 99%

Discrimination of Beers by Cyclic Voltammetry Using a Single Carbon Screen‐printed Electrode

et al. 2020

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A fast, simple and costless methodology without sample pre‐treatment is proposed for the discrimination of beers. It is based on cyclic voltammetry (CV) using commercial carbon screen‐printed electrodes (SPCE) and includes a correction of the signals measured with different SPCE units. Data are submitted to partial least squares discriminant analysis (PLS−DA) and support vector machine discriminant analysis (SVM−DA), which allow a reasonable classification of the beers. Also, CV data from beers can be used to predict their alcoholic degree by partial least squares (PLS) and artificial neural networks (ANN). In general, non‐linear methods provide better results than linear ones.

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Section: Introductionmentioning

confidence: 99%

Discrimination of Beers by Cyclic Voltammetry Using a Single Carbon Screen‐printed Electrode

et al. 2020

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“…For the detection of BTA, our sensor is just as efficient as that of other analytical techniques and tools such as surface-enhanced Raman scattering (SERS), differential pulse voltammetry (DPV), and high-performance liquid chromatography (HPLC), yet is faster because it does not require sample pre-treatment. − However, for the detection of IMD, although its sensitivity is sufficient for environmental monitoring, it is far less sensitive than solid-phase extraction (SPE), which has a reported LOD of 0.0005 μg/mL . Nevertheless, our sensor exhibits a sensitivity close to or even better than that of other systems. , …”

Section: Resultsmentioning

confidence: 99%

Integration of Metal–Organic Polyhedra onto a Nanophotonic Sensor for Real-Time Detection of Nitrogenous Organic Pollutants in Water

Calvo-Lozano,

Hernández-López,

Gomez

et al. 2023

ACS Appl. Mater. Interfaces

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The grave health and environmental consequences of water pollution demand new tools, including new sensing technologies, for the immediate detection of contaminants in situ. Herein, we report the integration of metal−organic cages or polyhedra (MOCs/MOPs) within a nanophotonic sensor for the rapid, direct, and realtime detection of small (<500 Da) pollutant molecules in water. The sensor, a bimodal waveguide silicon interferometer incorporating Rh(II)-based MOPs as specific chemical receptors, does not require sample pretreatment and enables minimal expenditure of time and reagents. We validated our sensor for the detection of two common pollutants: the industrial corrosion inhibitor 1,2,3-benzotriazole (BTA) and the systemic insecticide imidacloprid (IMD). The sensor offers a fast time-to-result response (15 min), high sensitivity, and high accuracy. The limit of detection (LOD) in tap water for BTA is 0.068 μg/mL and for IMD, 0.107 μg/mL, both of which are below the corresponding toxicity thresholds defined by the European Chemicals Agency (ECHA). By combining innovative chemical molecular receptors such as MOPs with state-of-the-art photonic sensing technologies, our research opens the path to implement competitive sensor devices for in situ environmental monitoring.

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“…Benzotriazoles (BZTs) are heterocyclic aromatic compounds that are widely used in industrial applications due to their excellent properties as corrosion inhibitors [20], antifreeze agents, and UV radiation stabilizers [21]. Another cause for the occurrence of BZTs in municipal wastewaters is their use in dishwasher products; tablets and powders [22].…”

Section: Benzotriazoles (Bzts)mentioning

confidence: 99%

Presence and Reduction of Anthropogenic Substances with UV Light and Oxidizing Disinfectants in Wastewater—A Case Study at Kuopio, Finland

Ikonen

Nuutinen

Niittynen

et al. 2021

Water

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Anthropogenic substances are a major concern due to their potential harmful effects towards aquatic ecosystems. Because wastewater treatment plants (WWTPs) are not designed to remove these substances from wastewater, a part of the anthropogenic substances enter nature via WWTP discharges. During the spring 2019, the occurrence of anthropogenic substances in the municipal wastewater effluent in Kuopio, Finland, was analysed. Furthermore, the capacity of selected disinfection methods to reduce these substances from wastewater was tested. The disinfection methods were ozonation (760 mL min−1) with an OxTube hermetic dissolution method (1), the combined usage of peracetic acid (PAA) (<5 mg L−1) and ultraviolet (UV) disinfection (12 mJ/cm2) (2), and the combined usage of hydrogen peroxide (H2O2) (<10 mg L−1) and UV disinfection (12 mJ/cm2) (3). The substances found at the concentrations over 1 µg L−1 in effluent (N = 3) were cetirizine (5.2 ± 1.3 µg L−1), benzotriazole (BZT) (2.1 ± 0.98 µg L−1), hydrochlorothiazide (1.7 ± 0.2 µg L−1), furosemide (1.6 ± 0.2 µg L−1), lamotrigine (1.5 ± 0.06 µg L−1), diclofenac (DCF) (1.4 ± 0.2 µg L−1), venlafaxine (1.0 ± 0.13 µg L−1) and losartan (0.9 ± 0.2 µg L−1). The reduction (%) with different methods (1, 2, 3) were: cetirizine (99.9, 5.0, NR = no removal), benzotriazole (67.9, NR, NR), hydrochlorothiazide (91.1, 5.9, NR), furosemide (99.7, 5.9, NR), lamotrigine (46.4, NR, 6.7), diclofenac (99.7, 7.1, 16.7), venlafaxine (91.3, NR, 1.1), losartan (99.6, 13.8, NR). Further research concerning the tested disinfection methods is needed in order to fully elucidate their potential for removing anthropogenic substances from purified wastewater.

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Screen-Printed Electrodes for the Voltammetric Sensing of Benzotriazoles in Water

Cited by 6 publications

References 35 publications

Discrimination of Beers by Cyclic Voltammetry Using a Single Carbon Screen‐printed Electrode

Discrimination of Beers by Cyclic Voltammetry Using a Single Carbon Screen‐printed Electrode

Integration of Metal–Organic Polyhedra onto a Nanophotonic Sensor for Real-Time Detection of Nitrogenous Organic Pollutants in Water

Presence and Reduction of Anthropogenic Substances with UV Light and Oxidizing Disinfectants in Wastewater—A Case Study at Kuopio, Finland

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