Journal
ELECTROCHIMICA ACTA
Volume 74, Issue -, Pages 105-110Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.04.006
Keywords
Square wave voltammetry (SWV); Cyclic voltammetry (CV); Multiwalled carbon nanotube (MWNT); Glassy carbon electrode; Escherichia coli O157:H7
Categories
Funding
- National Science Foundation of China [21177052, 31100137, 10975069, 81171588]
- Hunan Province Natural Science Foundation [10JJ3024]
- Scientific Foundation of Hunan Provincial Education Department [09C850]
- Starting Foundation for High-Scientific Study of Genius from University of South China [2011XQD58]
Ask authors/readers for more resources
A novel method for determination of trace amounts of microorganism populations in solution was developed by using a multiwalled carbon nanotube (MWNT) modified glassy carbon electrode and square wave voltammetry (SWV). The simultaneous combination of MWNT and SWV allowed the electrochemical signal of electro-active materials in Escherichia coli O157:H7 (E. coli) to be dramatically amplified. Compared with a bare glassy carbon electrode, the MWNT-modified glassy carbon electrode showed catalytic properties in the oxidation of electro-active materials on cell surfaces. Moreover, SWV was proved to be more sensitive than cyclic voltammetry (CV) for investigation of the electrochemical behavior of cells. In this paper, a linear relationship was obtained between the SWV peak current and the cell concentration in the range 2 x 10(2)-2 x 10(8) cell mL(-1) with a detection limit of 2 x 10(2) cell mL(-1). The effect of antibiotic drug Gentamycin Sulfate injection (C,SI) on the growth of E. coli was also investigated. (C) 2012 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available