NATURAL SCIENCES

Journal of fundamental
and
applied researches

Content and forms of microelements found in the soil of Astrakhan region

2013. №1, pp. 23-28

Svechnikova Anna A. - Engineer, LLC “Gazprom dobycha Noyabrsk”, 20 Respublika St., Nojabrsk, 629806, Yamal-Nenets Autonomous District, Russian Federation, astakhin@mail.ru

The paper investigated the concentration of gross and mobile forms of manganese, cuprum (copper), zink, ferrum (iron), nickel, cobalt and pumbum (lead) in the soil in 11 of the Astrakhan region’s districts. In investigating the microelements (manganese, cuprum, zink, nickel, cobalt and plumbum), the critique took into account the important biological role they play in overall ecosystems and in individual organisms (plants, animals and man). Moreover, an atom-absorption spectro chemical analysis was implemented to assess the concentration of gross and mobile forms in the region’s soil. In the analysis, the concentration of cuprum ranged from 12.19 to 20.37 ?g/g, the concentration of manganese varied from 20.72 to 328.64 ?g/g, the concentration of zink ranged from 10.59 to 154.95 ?g/g, the concentration of nickel varied from 5.55 to 30.19 ?g/g, the concentration of cobalt ranged from 1.52 to 12.88 ?g/g, and the concentration of plumbum varied from 3.64 to 14.95 ?g/g. The results indicated that the provisional concentration level of gross and mobile forms of microelements differed, depending on the granulometric structure of the soil and rock, and the directivity of the pedogenic process. According to the document, most of the soils in Astrakhan region are generally not adequate enough to provide for gross and mobile forms of microelements. The analysis also calculated the concentration and dispersion of microelements, demonstrating that they have a lower concentration than should have appeared in that particular region. Nevertheless, it did determine a highly significant coefficient of correlation between the microelements Mn – Pb and Ni – Pb (??0.9). This highly significant coefficient displays a synergism, so that an increase of one microelement would lead to an increased concentration of others.

Key words: microelements,manganese,cuprum,zink,nickel,cobalt,plumbum,soil,Astrakhan Region