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In this research, green-house pot experiments were carried out to study the uptake of arsenic (As) and antimony (Sb) by wheat and oat seedlings and to assess the effects of the toxicants on the distribution of other elements in the plants. Both plant species were capable of accumulating As and Sb. Oats was more sensitive to toxic effects from accumulation of the metalloids compared to wheat. Plant uptake of As and Sb was different when the elements were added to soil separately or together. The bioaccumulation of Sb was positively affected by As, while Sb negatively influenced the As uptake. No correlation between As and Sb in plants and rhizosphere soil was found. This may indicate that As and Sb in the rhizosphere soil and in plants form different metal-organic compounds. The bioaccumulation of Sb resulted in a decrease of Sb concentration in the rhizosphere soil, while an increase of As concentration in plants did not lead to decrease of As soils concentration.
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