Inductively Coupled Plasma Mass Spectrometric (ICP/MS) Determination of Thallium in Soils and Winter Rapeseeds |
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| Authors: | Petr Medek Jana Pavlíčková Jíří Zbíral Eva Čižmárová Vlastimil Kubáň |
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| Institution: | 1. Department of Chemistry and Biochemistry , Mendel University of Agriculture and Forestry in Brno , Zemědělská 1, CZ-61300, Brno, Czech Republic;2. Central Institute for Supervising and Testing in Agriculture , Hroznova 2, CZ-656 06, Brno, Czech Republic |
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| Abstract: | Abstract The ICP/MS method with lutetium, bismuth and indium as internal standards was used for the determination of thallium and other elements, i.e. Ti, V, Cr, Ni, Cu, Zn, Rb, Mo, Cd, As and Pb, in soils and rapeseeds. Samples were collected in two thallium highly pedogeochemicaily contaminated areas situated in South Bohemia and in Czech-Moravian Highlands, in two river alluvia, in two control sites with low levels of TI and in one spot with anthropogenic contamination. Levels higher than 2.5 mg kg?1 have been found in rapeseeds in the highly polluted areas (c. 2.8 mg kg?1 in soils). High correlation coefficients, r > 0.81, between content of TI in top- and sub-soils and rapeseeds were obtained. Thallium concentrations exceed twice of Pb content and by one order of magnitude of Cd amounts. This finding are very important because of the high toxicity of TI and the absence of threshold limits for TI in soils, agricultural products and foodstuffs in the Czech Republic. |
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| Keywords: | Thallium Soils Rapeseeds ICP/MS Atomic emission spectrometry Mass spectrometry |
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