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  • Krupinska, Karolina, et al. (author)
  • Detection of low levels of Escherichia coli by electrochemical impedance spectroscopy and singular value decomposition
  • 2017
  • In: Chemometrics and Intelligent Laboratory Systems. - : Elsevier. - 0169-7439 .- 1873-3239. ; 163, s. 49-54
  • Journal article (peer-reviewed)abstract
    • The first steps are reported in the development of a new ultrasensitive electrochemical biosensor for detection of Escherichia coli (E. coli) in water. Two gold electrodes in a sandwich flow-cell were modified with E. coli polyclonal antibody and exposed to three different concentrations of E. coli. Electrochemical Impedance Spectroscopy was used in combination with Singular Value Decompostion of the complex numbers to monitor the interactions at the electrode surfaces. A linear regression line in the concentration range 10-1000 CFU⁎ml-1 was obtained without use of redox probes or metal nanoparticles for signal amplification.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Lindholm-Sethson, Br ... (1)
Geladi, Paul (1)
Vikholm-Lundin, Inge ... (1)
Krupinska, Karolina (1)
University
Umeå University (1)
Swedish University of Agricultural Sciences (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2017 (1)

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