Selenium Content in Agricultural Soils and Wheat from the Balkan Peninsula

Selenium (Se) is an essential micro-nutrient for human and animals but it is highly toxic. Its organic compounds play an important role in biochemistry and nutrition of the cells. Concentration levels of this element in the different regions of the world vary considerably. This study aimed to compare the availability and levels of the Se in some rural areas of the Balkan Peninsula and relationship with the concentrations of other trace elements. For this purpose soil samples and wheat grains from different regions of Bulgaria, Serbia, Nord Macedonia, Romania, and Greece situated far from large industrial centers have been analyzed. The main methods for their determination were the atomic spectral techniques – atomic absorption and plasma atomic emission. As a result of this study, data on microelements levels from the main grain-producing regions of the Balkan Peninsula were determined and systematized. The presented results confirm the low levels of Se in this region: 0.222– 0.962 mg.kg^-1 in soils and 0.001 - 0.005 mg.kg^-1 in wheat grains and require measures to offset the effect of this deficiency.

• S. Krustev
• V. Angelova
• P. Zaprjanova

• Agricultural soils
• Balkan Peninsula
• rural areas
• selenium.

[1] Ge K., G. Yang, 1993. The epidemiology of selenium deficiency in the etiological study of endemic diseases in China, The Amer. J of Clinical Nutrition, 57, Issue 2: 259–263
[2] Rosenfeld I., O. A. Beath, 1964. Selenium: Geobotany, Biochemistry, Toxicity, and Nutrition, Academic Press Inc., New York – London: 411-414.
[3] Magos L., M. Webb, 1980. The interactions of selenium with cadmium and mercury, CRC Crit Rev Toxicol 8: 1-42.D.C. Adriano, Trace Elements in the Terrestrial Environment, Springer-Verlag, Berlin, Germany, 2001.
[4] Gerla P, M. Sharif, S. Korom, 2010. Geochemical processes controlling the spatial distribution of selenium in soil and water, west central South Dakota, USA, Environmental Earth Sciences, V 62, 1551 - 1560.
[5] Tan J., W. Zhu, W. Wang, R.Li et al. 2002. Selenium in soil and endemic diseases in China. Science of the total environment V 284: 227-235.
[6] Oldfield J. E., 2002. Selenium Word Atlas, updated edition, Oregon State University, Corvallis
[7] Lakatusu R. M. Lungu, M. Aldea, V. Stroe et al., 2010. Selenium in the rock-soil-plant system in the south-eastern part of Romania, Present Env. and Sustainable Development, 4:145-157.
[8] Xing K., S. Zhou, X. Wu, Y. Zhu, J. Kong, T. Shao, 2015. Concentrations and characteristics of selenium in soil samples from Dashan Region, a selenium-enriched area in China, Soil Science and Plant Nutritio, V 61, 889-897.
[9] S. Krustev, V. Angelova, K. Ivanov, Determination of selenium in different wheat varities, Agricultural University, Scientific Works, vol. LIX, book 3,pp. 151-154, 2015.
[10] Alfthan G., G. Bogye, A. Aro, J. Feher, 1992. The human selenium status in Hungary. J. Trace Elem. Electrolytes Health Dis 6: 233-238.
[11] Maksimovic Z., V. Jovic V, I. Djujic, M. Rsumovic, 1992. Selenium deficiency in Yugoslavia and possible effects on health. Environmental Geochemistry and Health 14: 107-111.
[12] EPA Method. 1996. Mikrowave assisted acid digestion of sediments, sludge, soils.
[13] S. Krustev, V. Angelova, P. Zaprjanova, M. Nankova, K. Ivanov Selenium status in soil and wheat grain of Northeast region of Bulgaria, Agricultural University, Agricultural sciences, vol. IX, issue 21, pp. 115-122, 2017.