Sensor system based on flexible screen-printed electrodes for electrochemical detection of okadaic acid in seawater
| Autor: | M.J. Arcos-Martínez, Isabel Escudero, Begoña Molinero-Abad, D. Izquierdo, Lydia Pérez |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Okadaic acid
Phosphatase Biosensing Techniques 02 engineering and technology 01 natural sciences Analytical Chemistry Divalent chemistry.chemical_compound Limit of Detection Okadaic Acid Seawater Protein Phosphatase 2 Enzyme Inhibitors Electrodes chemistry.chemical_classification Detection limit Chromatography 010401 analytical chemistry Química analítica Electrochemical Techniques 021001 nanoscience & nanotechnology Phosphate Carbon Organophosphates PP2A 0104 chemical sciences chemistry Screen printed electrodes Flexible display Electrode Textile sensors Printing Chemistry Analytic 0210 nano-technology |
| Zdroj: | Repositorio Institucional de la Universidad de Burgos (RIUBU) instname |
| ISSN: | 0039-9140 |
| DOI: | 10.1016/j.talanta.2018.09.072 |
| Popis: | The monitoring of marine dinophysistoxin okadaic acid in seawater can serve as an early alert system for preventing the potential negative effects this toxin can have on the food industry and human health in general. A disposable sensor system for electrochemical detection of this toxin has been developed using screen-printed electrodes. The method described is based on the inhibition of protein phosphatase type 2A by okadaic acid, evaluating the enzyme activity. p-Nitrophenyl phosphate, 4-methylumbelliferyl phosphate and phenyl phosphate have been tested as substrates achieving good limits of detection of 2.7·10–12 M of okadaic acid. The proposed method has been successfully applied to okadaic acid determination in seawater samples. A study of divalent cations present in seawater that can interfere with the measurement has been carried out. The electrode systems were printed on both rigid and textile backing materials to observe the influence of those materials on the final performance of the sensor. Ministerio de Ciencia e Innovación (MICINN) (TEC2013-405661-P) Ministerio de Economía y Competitividad (MINECO) and European Regional Development Fund (FEDER) (MUSSEL RTC-2015-4077-2). |
| Databáze: | OpenAIRE |
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