Study type: Medical/biological study (experimental study)

The influence of an electric field on growth and trace metal content in aquatic plants. med./bio.

Published in: Int J Phytoremediation 2019; 21 (3): 246-250

Aim of study (acc. to author)

The effects of exposure of Canadian waterweed (Elodea canadensis) to a 50 Hz electric field on growth and trace metals content should be investigated.

Background/further details

A total of 560 pieces of Elodea canadensis were allocated to one exposure group and one control group, respectively.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 50 Hz
Exposure duration: continuously for 7 days

Exposure 1

Main characteristics
Frequency 50 Hz
Type
Exposure duration continuously for 7 days
Exposure setup
Exposure source
  • plate condenser
Chamber fourteen aquariums (50 x 23 x 10 cm3) filled with 40 pieces of Elodea canadensis and 6 L nutrient solution, each; covered with transparent stretch film
Setup aquariums were placed between the plates of the plate condenser (plates above and below) to produce a homogeneous electric field; water temperature was maintained at 21°C ± 2°C and a circadian rhythm of 14 to 10 hours at constant light was followed
Parameters
Measurand Value Type Method Mass Remarks
electric field strength 54 kV/m - measured - ± 2 kV/m

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The growth of exposed plants was slightly but not significantly increased compared to plants of the control group.
The contents of all trace metals were significantly different in exposed plants compared to the control group: iron, manganese and nickel were increased, lead and zinc decreased.
The authors conclude that exposure to a 50 Hz electric field could alter the content of trace metals in the Canadian waterweed (Elodea canadensis).

Study character:

Study funded by

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