Correlations of natural radionuclides in soil with those in sediment from the Danube and nearby irrigation channels

► 238U, 232Th and 40K were measured in soil, Danube and surrounding channel sediment. ► Correlation of activity concentrations were observed. ► In cannel sediment natural radionuclides are not well correlated as in Danube one. ► Ratios of 238U, 232Th and 40K can be good indicator for TENORM monitoring.