[Investigations of soil contamination with toxic substances in the Aukstaitija hills region of Lithuania]
2000
Motuzas, A. | Vaisvalavicius, R. (Lithuanian Inst. of Agriculture, Dotnuva (Lithuania))
Investigations of pollution with radionuclides and heavy metals of the prevailing soils in the zone affected by Ignalina nuclear power plant (NPP) were carried out. It was stated that the action of 137 Cs and 90 Sr does not exceed background indices; however, they are different due to diverse soil texture, carbonate content, moisture, amount of organic matter / decomposition extent and ground water depth. Statistically reliable and essentially greater 90 Sr activity was determined in the forest leaf litter in comparison with 0-5 cm humus layer of mineral soils. It was ascertained that long-term and multiple spraying of gardens with pesticides noticeably increased the amount of total forms of copper and zinc in heavy textured soil. Their average total amounts exceeded standard - background indices 1.6 times. However, they did not reach the permissible level of soil pollution with heavy metals
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