Single Microcystis Detection Through Electrochemical Collision Events on Ultramicroelectrodes
- 주제(키워드) Microcystis , Electrochemical collision , Ultramicroelectrode , Single-entity electrochemistry , Blue-green algae sensing
- 주제(기타) Chemistry, Multidisciplinary
- 설명문(일반) [Lee, Jeeho; Lee, Jungeun; Song, Sua; Kim, Byung-Kwon] Sookmyung Womens Univ, Dept Chem, Seoul 04310, South Korea
- 등재 SCIE, SCOPUS, KCI등재
- 발행기관 WILEY-V C H VERLAG GMBH
- 발행년도 2021
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000182526
- 본문언어 영어
- Published As http://dx.doi.org/10.1002/bkcs.12237
초록/요약
This study introduces the electrochemical detection of a single microcystis on an Au ultramicroelectrode based on single-entity electrochemistry. The electrochemical collisions occur when the microcystis is adsorbed on the electrode surface. This hinders the oxidation of the electroactive redox species in the solution, thus making the current decrease like a staircase. In this experiment, the current decrease caused by the collision which requires an appropriate concentration of the redox species and initial potential, providing information on migration effect by zeta-potential, and collision frequency. Comparison of the simulation results of the finite element method and the experimental results suggested that the staircase current decrease caused by the microcystis can occur due to collision not only on the electrode surface but also on the surrounding regions of the electrode surface (i.e., the active area). These results suggest various applications of the single-entity cell detection using the electrochemical method for real-time analysis.
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