Computer-Assisted Processing of Current Step Signals in Single Blocking Impact Electrochemistry
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High Resolution Image Download MS PowerPoint Slide Current step signals related to single-entity collisions in blocking impact electrochemistry were analyzed by computer-assisted processing for estimating the size distributions of various particles. In this work, three different types of entities were studied by single blocking impact electrochemistry: polystyrene nanospheres (350 nm diameter) and microspheres (1 μm diameter), phospholipid liposomes (300 nm diameter) and two different strains of Gram-negative bacillus bacteria ( Escherichia coli and Shewanella oneidensis ). The size estimations of these different entities from the current step signal analysis were compared and discussed according to the shape and size of each entity. From the magnitude of the current step transient, the size distribution of each entity was calculated by a new computer program assisting in the detection and analysis of single impact events in chronoamperometry measurements. The data processing showed that the size distributions obtained from the electrochemical data agreed with the dynamic light scattering and atomic force microscopy data for nanospheres and liposomes. In contrast, the size estimation calculated from the electrochemical data was underestimated for microspheres and bacteria. We demonstrated that our computer program was efficient for detecting and analyzing the collision events in single blocking impact electrochemistry for various entities from spherical hard nanoparticles to micrometer-sized rod-shaped living bacteria.
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- Authors
- Langlard, A., Smida, H., Chevalet, R., Thobie-Gautier, C., Boujtita, M., & Lebègue, E.
- Affiliations
- Centre National de la Recherche Scientifique (FR)
- Nantes Université, CNRS, CEISAM, UMR 6230, F-44000 Nantes, France
- Corresponding author
- Lebègue, Estelle
- Venue
- ACS Measurement Science Au
- Publisher
- American Chemical Society (ACS)
- Published
- 2024-09-06
- Volume
- 4
- Issue
- 5
- Pages
- 585-592
- ISSN
- 2694-250X (ISSN-L)
- PMC
- PMC11487761
- OpenAlex
- W4402301528
- Cited by
- 11
- References
- 40
- Citations by year
- 2026: 6 · 2025: 5
- FWCI
- 1.41
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- ACS Measurement Science Au (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- HAL (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Agence Nationale de la Recherche (ANR-21-CE42-0007-01)
- Conseil Régional des Pays de la Loire
- Topics
- Physical Sciences › Chemistry › Electrochemistry › Electrochemical Analysis and Applications
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrochemical sensors and biosensors
- Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Electrostatics and Colloid Interactions
- Keywords
- particle size distribution, chronoamperometry, polystyrene nanospheres, polystyrene microspheres, phospholipid liposomes, Escherichia coli, Shewanella oneidensis, computer-assisted data analysis, rod-shaped bacteria
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