STUDY ON CHEMICAL ANALYSIS OF SOIL IN THE COUNTY OF GORJ, IN TERMS OF THE CONTENT OF HEAVY METALS AND CHLORIDES

The soil is the most complex environmental factor, but also the most important in ensuring existential and material support evolving generations of plants, animals and humans, succeeding in time. Gorj county shows the variability of the natural and thus a highly diversified soil cover. The main sources of soil pollution in the Gorj county are mining, energy and oil industry, sources that radically alter the physical indicators of soil quality and pollute with significant quantities of dust, oxides acids, polycyclic aromatic hydrocarbons, chlorides and heavy metals. To highlight the chemical pollution of the soil, samples were collected from representative areas of Gorj county and they were analysed in terms of heavy metals content, by atomic absorption spectrometry. Also, it was made a correlation between pH and chloride content which aimed soil characterization in terms of salinity. Concentrations obtained were compared with normal values and alert thresholds. Study demonstrates that they were recorded exceeding the normal values for heavy metals analysed in some areas of the county, without exceeding the alert thresholds. The pH indicated neutrality soils and in terms of salinity, these are weak saline or moderately saline. In Gorj county it is necessary to apply a strategy to increase the capitalization of potential soil.