5th INTERNATIONAL MULTIDISCIPLINARY CONFERENCE SEQUENTIAL EXTRACTION AND VALUATION OF DIFFERENT FORMS OF CHROMIUM IN SOIL

Abstract: Influence of chromium on the course of biochemical reactions in the environment depends among others on possibility of its getting from soil to soil solutions. In practice this process is investigated among others by performance of the sequential extraction of soil and characterization of chemical fraction of chromium. Chromium description in soil eluates requires establishing conditions of preparation of a soil sample for researches, performing of the sequential extraction of soil and chromium determination in obtained solutions. Influence of a grain diameter and drying temperature of soil and time of extraction, volume of the eluent and leaching temperature on the final result of Cr extraction from soil to solutions and its determination in eluates were performed. Optimum conditions of Cr extraction from soil and its analysis were established. The estimate of contents of various fraction of Cr in soil was performed as well as it was found not larges contents of exchangeable chromium and higher Cr contents in residual. Key words: soil, sequential extraction of soil, chromium, FAA