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Total phenol analys...
Total phenol analysis of weakly supported water using a laccase-based microband biosensor.
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- Sekretaryova, Alina (författare)
- Linköpings universitet,Kemiska och optiska sensorsystem,Tekniska fakulteten
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- Volkov, Anton V. (författare)
- Linköpings universitet,Fysik och elektroteknik,Tekniska fakulteten,Laboratory of Organic Electronics
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- Zozoulenko, Igor V. (författare)
- Linköpings universitet,Fysik och elektroteknik,Tekniska fakulteten,Laboratory of Organic Electronics
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- Turner, Anthony, 1950- (författare)
- Linköpings universitet,Biosensorer och bioelektronik,Tekniska fakulteten
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- Vagin, Mikhail Yu (författare)
- Linköpings universitet,Fysik och elektroteknik,Tekniska fakulteten
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- Eriksson, Mats (författare)
- Linköpings universitet,Kemiska och optiska sensorsystem,Tekniska fakulteten
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(creator_code:org_t)
- Elsevier, 2016
- 2016
- Engelska.
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Ingår i: Analytica Chimica Acta. - : Elsevier. - 0003-2670 .- 1873-4324. ; 907, s. 45-53
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The monitoring of phenolic compounds in wastewaters in a simple manner is of great importance for environmental control. Here, a novel screen printed laccase-based microband array for in situ, total phenol estimation in wastewaters and for water quality monitoring without additional sample pre-treatment is presented. Numerical simulations using the finite element method were utilized for the characterization of micro-scale graphite electrodes. Anodization followed by covalent modification was used for the electrode functionalization with laccase. The functionalization efficiency and the electrochemical performance in direct and catechol-mediated oxygen reduction were studied at the microband laccase electrodes and compared with macro-scale electrode structures. The reduction of the dimensions of the enzyme biosensor, when used under optimized conditions, led to a significant improvement in its analytical characteristics. The elaborated microsensor showed fast responses towards catechol additions to tap water – a weakly supported medium – characterized by a linear range from 0.2 to 10 μM, a sensitivity of 1.35 ± 0.4 A M−1 cm−2 and a dynamic range up to 43 μM. This enhanced laccase-based microsensor was used for water quality monitoring and its performance for total phenol analysis of wastewater samples from different stages of the cleaning process was compared to a standard method.
Ämnesord
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
Nyckelord
- Laccase; microelectrode; microband; electrochemical modeling; total phenol analysis; wastewater
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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