Dinamika ugljika i sumpora u hidromelioriranom tlu i drenažnoj vodi na području srednje Posavine

Abstract: In this work, total carbon (C) and sulfur (S) were determined in the hydroameliorated soil in the Sava river valley, at depth of 0-25 cm and 25-50 cm.The maximum amount of C (1.96%) and S (0.055%) was found at a depth of 0-25 cm. .In the drainage water samples from same location, dissolved organic carbon (DOC), particulate organic carbon (POC), organic and inorganic reduced sulfur species (RSS), and surface active substances (SAS) were investigated. The DOC concentrations were in the range from 1.07 to 9.93 mg C dm−3 the average value of 4.68 ± 2.52 mg C dm−3, and concentrations of POC were between 0.11 and 3.51 mg C dm−3 (average value: 1.06 ± 0.96 mg C dm−3). The SAS in the drainage water samples corresponds with mainly humic/fulvic type of the material. The total concentrations of RSS were in the range from 0.24 and 0.36 μmol dm−3; organic sulfur fraction was lower, up to 36%.