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Tytuł pozycji:

Highly selective and sensitive nitrite biocathode biosensor prepared by polarity inversion method coupled with selective removal of interfering electroactive bacteria.

Tytuł:
Highly selective and sensitive nitrite biocathode biosensor prepared by polarity inversion method coupled with selective removal of interfering electroactive bacteria.
Autorzy:
Lin Z; State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China.
Cheng S; State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China. Electronic address: .
Li H; State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China.
Jin B; State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China.
He X; State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China.
Źródło:
Biosensors & bioelectronics [Biosens Bioelectron] 2022 Oct 15; Vol. 214, pp. 114507. Date of Electronic Publication: 2022 Jun 25.
Typ publikacji:
Journal Article
Język:
English
Imprint Name(s):
Publication: Oxford : Elsevier Advanced Technology
Original Publication: [Barking, Essex, England] : Elsevier Applied Science, 1989-
MeSH Terms:
Biosensing Techniques*/methods
Nitrites*
Bacteria ; Humans ; Metronidazole ; Nitrogen Dioxide ; Wastewater
Contributed Indexing:
Keywords: Electrochemical biosensor; Metronidazole; Nitrite; Nitrite-reducing bacteria; Selectivity
Substance Nomenclature:
0 (Nitrites)
0 (Waste Water)
140QMO216E (Metronidazole)
S7G510RUBH (Nitrogen Dioxide)
Entry Date(s):
Date Created: 20220708 Date Completed: 20220726 Latest Revision: 20221207
Update Code:
20240105
DOI:
10.1016/j.bios.2022.114507
PMID:
35803150
Czasopismo naukowe
Nitrite is a multipurpose marker that needs to be detected quickly and accurately, including for water pollution and human urinary tract infections. In this study, we reported a novel nitrite-reducing bacteria electrochemical biosensor based on the metronidazole-treated biocathode (MT-NBEB). The biocathode with high nitrite response sensitivity used was first prepared by polarity inversion method and then treated with metronidazole to selectively remove the interfering electroactive bacteria for selectivity improvement. MT-NBEB could detect nitrite in the range of 0.0001 mg NO 2 - -N L -1 -8 mg NO 2 - -N L -1 within 1.7 min and maintain stable detection performance for over 50 continuous cycles with relative standard deviations < 2.4%. Besides, the response signals of MT-NBEB were not affected by the common inorganic salts (such as nitrate and ammonia) and organic matter (such as acetate). MT-NBEB successfully detected nitrite in five types of wastewaters with relative errors < 14.3%. Our study provided a feasible way to prepare highly selective and sensitive electrochemical biosensors to quickly and accurately detect nitrite in real wastewaters.
(Copyright © 2022 Elsevier B.V. All rights reserved.)

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