期刊
PLANT SOIL AND ENVIRONMENT
卷 55, 期 4, 页码 167-172出版社
CZECH ACADEMY AGRICULTURAL SCIENCES
DOI: 10.17221/21/2009-PSE
关键词
heavy metals; soil contamination; heavy metal speciation; bioavailability; mobile and mobilizable form
类别
资金
- Scientific Grant Agency (VEGA) of the Ministry of Education of the Slovak Republic
- Slovak Academy of Sciences [1/4362/07]
The heavy metal contents and their bioavailability were monitored in soils of Central Spis region of SR. This area belongs to long term contaminated and hygienically loaded areas. Soil contamination by heavy metals is caused especially by ore mining, processing and treatment. Soil samples from the Central Spis contained higher proportions of mobile forms which corresponded to the following sequence Pb > Zn > Cu, while for mobilizable forms the sequence of investigated metals was as follows: Cu > Zn > Pb. Soil pH is one of the parameters that affect significantly the share of bioavailable forms of metals. Higher proportions of mobile fractions of metals were detected in samples taken from soils with acidic pH. Statistical processing confirmed a relationship between the percentage share of lead and zinc in the mobile form and the level of pH/KCl, which was significant for Zn: r = -0.53. The relationships for lead and copper were insignificant.
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