Study type: Medical/biological study (experimental study)

Effect of electromagnetic fields on the denitrification activity of Paracoccus denitrificans. med./bio.

Published in: Bioelectrochemistry 2007; 70 (1): 91-95

Aim of study (acc. to author)

To study the possible effect of extremely low frequency electromagnetic field on denitrification activity of the bacteria Paracoccus denitrificans.

Background/further details

Denitrification is a process where nitrate is reduced via nitrite, and nitric oxide to the nitrogen gas.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 50 Hz
Exposure duration: continuous for 24 min

Exposure 1

Main characteristics
Frequency 50 Hz
Type
Waveform
  • unspecified
Exposure duration continuous for 24 min
Exposure setup
Exposure source
  • a pair of cylindrical coils, 235 mm in diameter
Setup The samples were placed in the center of the coils, where uniformity of the field was maximum.
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 10 mT unspecified measured - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

In comparison to the control samples the denitrification activity decreased significantly after magnetic field exposure. There was 21 % decrease (statistically significant) in colony forming units number for exposed bacteria.

Study character:

Study funded by

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