A case study on uptake of thorium from soil to plant by using X-ray fluorescence spectrometry

A case study was carried out to determine the uptake of thorium from soil to plant by using X-ray fluorescence technique. The radioecological experiment was undertaken to provide plant/soil concentration ratio (CR) data for thorium using 2 types of plant (barley and common vetch)×4 levels of Th(0, 1500, 3000,4500ppm)×2 types of soil (acidic and alkaline) with different configuration parameters. The calibration of the analytical method for thorium on dry basis of samples is described by using¹⁰⁹Cd excitation source. The results indicated that theCR values decreased with the corresponding Th concentration in soils with a 1000 fold range and differed among soil and plant types.