| In Rock-Eval pyrolysis, a sample is placed in a vessel and is progressively heated to [[temperature::550°C]] under an inert atmosphere. During the analysis, the hydrocarbons already present in the sample are volatized at a moderate temperature. The amount of hydrocarbons are measured and recorded as a peak known as S1. Next pyrolyzed is the kerogen present in the sample, which generates hydrocarbons and hydrocarbon-like compounds (recorded as the S2 peak), CO<sub>2</sub>, and water.<ref name=ch06r12>Tissot, B., P., Welte, D., H., 1984, Petroleum Formation and Occurrence, 2 ed.: New York, Springer-Verlag, 699 p. ''The best overall reference for petroleum geochemistry.''</ref> The CO<sub>2</sub> generated is recorded as the S3 peak. Residual carbon is also measured and is recorded as S4. | | In Rock-Eval pyrolysis, a sample is placed in a vessel and is progressively heated to [[temperature::550°C]] under an inert atmosphere. During the analysis, the hydrocarbons already present in the sample are volatized at a moderate temperature. The amount of hydrocarbons are measured and recorded as a peak known as S1. Next pyrolyzed is the kerogen present in the sample, which generates hydrocarbons and hydrocarbon-like compounds (recorded as the S2 peak), CO<sub>2</sub>, and water.<ref name=ch06r12>Tissot, B., P., Welte, D., H., 1984, Petroleum Formation and Occurrence, 2 ed.: New York, Springer-Verlag, 699 p. ''The best overall reference for petroleum geochemistry.''</ref> The CO<sub>2</sub> generated is recorded as the S3 peak. Residual carbon is also measured and is recorded as S4. |