Heavy metals and their bioavailability from soils in the long-term polluted Central Spis region of SR

被引:85
作者
Takac, P. [1 ]
Szabova, T. [1 ]
Kozakova, L. [1 ]
Benkova, M. [1 ]
机构
[1] Tech Univ Kosice, Inst Montaneous Sci & Environm Protect, Fac Min Ecol Proc Control & Geotechnol, Pk Komenskeho 19, Kosice 04001, Slovakia
关键词
heavy metals; soil contamination; heavy metal speciation; bioavailability; mobile and mobilizable form; CADMIUM; ZINC;
D O I
10.17221/21/2009-PSE
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
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.
引用
收藏
页码:167 / 172
页数:6
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