Uptake of thallium from naturally-contaminated soils into vegetables.
Thallium transfer from naturally (pedogeochemically) contaminated soils into vegetables was studied. Three different types of top-soil (heavy, medium, and light) were used for pot experiments. The soils were collected from areas with low, medium, and high levels of pedogeochemical thallium (0.3, 1.5 and 3.3 mg kg(-1)). The samples of vegetables were collected and analysed. The total content of thallium in soil and the type of soil (heavy, medium and light), plant species and plant variety were found to be the main factors influencing thallium uptake by plants. The uptake of thallium from soils with naturally high pedogeochemical content of this element can be high enough to seriously endanger the food chain. These findings are very important because of the high toxicity of thallium and the absence of threshold limits for thallium in soils, agricultural products, feedstuffs and foodstuffs in most countries, including the Czech Republic.
Pavlícková
Jana
J
Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelská, Brno, Czech Republic.
Zbíral
Jirí
J
Smatanová
Michaela
M
Habarta
Petr
P
Houserová
Pavlína
P
Kubán
Vlastimil
V
D000077102:Apium / Q000378:metabolism; D001682:Biological Availability; D001937:Brassica / Q000378:metabolism; D029688:Brassica napus / Q000378:metabolism; D018552:Daucus carota / Q000378:metabolism; D005506:Food Contamination / Q000032:analysis*; D019697:Onions / Q000378:metabolism; D028528:Petroselinum / Q000378:metabolism; D018515:Plant Leaves / Q000378:metabolism; D012989:Soil Pollutants / Q000493:pharmacokinetics*; D013793:Thallium / Q000493:pharmacokinetics*; D014675:Vegetables / Q000378:metabolism*; D003313:Zea mays / Q000378:metabolism
D012989:Soil Pollutants; D013793:Thallium