EMF-Portal | A preliminary study on ultra high frequency electromagnetic fields effect on black locust chlorophylls

A preliminary study on ultra high frequency electromagnetic fields effect on black locust chlorophylls med./bio.

By: Sandu DD, Goiceanu IC, Ispas A, Creanga I, Miclaus S, Creanga DE

Published in: Acta Biol Hung 2005; 56 (1-2): 109-117

Aim of study (acc. to author)

To study quantitatively chlorophylls in the leaves of black locust seedlings exposed to electromagnetic fields of high frequency.

Endpoint

Exposure

Exposure	Parameters
Exposure 1: 400 MHz Modulation type: CW Exposure duration: repeated daily exposure of 1, 2, 3 and 8 hours for 3 weeks	power: 2 W electric field strength: 60 V/m

Exposure 1

Main characteristics

Frequency	400 MHz
Type	electromagnetic field
Charakteristic	guided field
Exposure duration	repeated daily exposure of 1, 2, 3 and 8 hours for 3 weeks

Modulation

Modulation type	CW

Exposure setup

Exposure source	TEM cell

Parameters

Measurand	Value	Type	Method	Mass	Remarks
power	2 W	-	-	-	-
electric field strength	60 V/m	-	calculated	-	-

Reference articles

Crawford ML (2016): Generation of standard EM fields using TEM transmission cells

Exposed system:

plant
black locust (Robinia pseudoacacia L.)
whole body

Methods Endpoint/measurement parameters/methodology

Investigated system:

isolated bio./chem. substance

Time of investigation:

after exposure

Main outcome of study (acc. to author)

Chlorophyll-a as well as chlorophyll-b level was decreased except the exposure time of two hours, where a considerable enhancement was noticed. It was revealed that the ratio of the two chlorophylls was decreasing logarithmically to the increase of daily exposure time.

Study funded by

not stated/no funding

Tkalec M et al. (2007): Exposure to radiofrequency radiation induces oxidative stress in duckweed Lemna minor L