Abstract
The primary objective of the present study was to assess the level of selenium and toxic trace elements in wheat, rice, maize, and mustard from seleniferous areas of Punjab, India. The content of selenium (Se) and toxic trace elements, including aluminum (Al), arsenic (As), cadmium (Cd), mercury (Hg), nickel (Ni), lead (Pb), and tin (Sn), in crop samples was assessed using inductively coupled plasma mass-spectrometry after microwave digestion of the samples. The obtained data demonstrate that cultivation of crops on seleniferous soils significantly increased Se level in wheat, mustard, rice, and maize by a factor of more than 590, 111, 85, and 64, respectively. The study also showed that Se exposure affected toxic metal content in crops. In particular, Se-rich wheat was characterized by a significant decrease in Al, As, Ni, Pb, and Sn levels. The level of As, Cd, Ni, Pb, and Sn was significantly decreased in Se-rich rice, whereas As content was increased. In turn, the decrease in Al, As, Cd, Ni, Pb, and Sn levels in Se-rich maize was associated with a significant elevation of Hg content. Finally, Se-rich mustard was characterized by a significant increase in Al, As, and Hg levels, while the content of Ni, Pb, and Sn was significantly lower than the control levels. These findings should be taken into account while developing the nutritional strategies for correction of Se status. At the same time, the exact mechanisms underlying the observed differences are to be estimated.
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Funding
The current investigation is supported by the Russian Foundation for Basic Research within project no. 17-55-45027 and the Department of Science and Technology, Government of India (INT/RUS/RFBR/P-252) “Localization of selenium and other trace elements in edible crops cultivated in seleniferous soils.”
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Skalnaya, M.G., Jaiswal, S.K., Prakash, R. et al. The Level of Toxic Elements in Edible Crops from Seleniferous Area (Punjab, India). Biol Trace Elem Res 184, 523–528 (2018). https://doi.org/10.1007/s12011-017-1216-7
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DOI: https://doi.org/10.1007/s12011-017-1216-7