Experimental Study of the Product Composition of the Chelyabinsk Meteorite (LL5) Outgassing

Resumo

The Chelyabinsk meteorite sample of type LL5 was subjected to calcination in the specially constructed instrument in the temperature range 200–800°C in increments of 100°C. The composition of the obtained volatile constituents was examined on a chromatograph. Detected were: CO₂, H₂O, and N₂ in concentrations of 5–40 μg/g of the sample; H₂, CO, CH₄, and H₂S in concentrations of 0.1–2.0 μg/g. By observing changes in the selected component concentrations over time (up to 90 minutes), it was concluded that chemical reactions in the system between volatile components occur directly during outgassing.