Abstract
Curie-point pyrolysis - gas chromatography analyses were performed on four vitrinite concentrates of maturity levels from 0.96 %Rmax to 1.93 %Rmax. Analyses were carried out on "thermal extracts" obtained at a Curie-temperature of 358 °C and on pyrolysates obtained at a Curie-temperature of 770 °C. The relative concentrations of alkylphenols
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