Seeking for radioactive graphite in the forest litter

Objective : Our goal was to introduce the differential method for the investigation of 14 C in the sam- ples of the environment that were inhomogeneous by the content of 14 C and by the inhomogeneity of thermo-destruction of their components. We estimated sensitivity and reproduction of the method. Materials and methods: For the investigation of 14 C we used traditional method on the basis of liq- uid scintillation count and applied vacuum pyrolysis for the component preparation of the forest litter in the search of radioactive graphite. Results and conclusions: We compared the results of the application of vacuum pyrolysis technology (Skripkin & Kovaliukh, 1997) for the production of benzene samples where the fractions of one and the same sample were processed together or separately. 14 C is indicated systemati- cally more by 51.5% in the prepared separate second fraction of two ones of the samples in comparison with the joint sample of two fractions (R 2 = 0.9554).Systematically, there was 14 C more by 51.5% in the prepared separate second of two fractions of the samples in comparison with the joint sample of two fractions (R 2 = 0.9554).