Results of high temperature processing of high-carbon materials from the lower Cambrian period of the Earth’s history

“…The scheme of the setup for y ash burning: 1 Å tubular electric furnace, 2 Å quartz tube, 3 Å sample, 4 Å quartz tube for air supply, 5 Å a collection of stainless steel, 6 Å a collection of gold foil, 7 and 8 Å traps with 6 M NaOH solution, 9 Å carbon ˇlter, 10 Å membrane pump volatile compounds. The carbon ˇlter was located at the exit of gases from the column (9). After each experience fractions deposited at different temperatures were collected.…”

“…The study of the element distribution on the setup and chemical processing of samples were done with the help of their radioactive nuclides. 74 As (T 1/2 = 17.77 d, E γ = 595.9 keV), 126 I (T 1/2 = 13 d, 203 Hg (T 1/2 = 46.59 d, E γ = 279 keV), and 203 Pb (T 1/2 = 52.1 h, E γ = 279.18 keV) were used as tracers and obtained by irradiation of elements or their compounds on the MT-22, 25 microtrons of FLNR [3,9].…”