The occurrence and geochemistry of Di - and trimethyl - 2- (4,8,12 trimethyltridecyl) chromans and benzohopanes in Fushun cannel coal,Northeast China |
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| Authors: | Fan Shanfa Fu Jiamo Geoffery Eglinton Simon C Brassell |
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| Institution: | (1) Institute of Geochemistry, Academia Sinica, Guiyang;(2) Organic Geochemistry Unit, School of Chemistry, University of Bristol, UK |
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| Abstract: | The distribution of methyl-2-methyl-2-(4,8,12-trimethyltridecyl)chromans (M - MTTC) is related to sedimentary environments.
5,7,8 - tri-Me-MTTC, 5,8 -di - Me-MTTC and 7,8 - di - Me - MTTC have been found in coal for the first time, implying that
M-MTTC is widely spread in sediments.The distribution of M - MTTC. the presence of C32—C35 benzohopanes, high Pr/Ph ratio, obvious even - odd predominance in C24—C34 alkanes and odd-even predominance in normal alkanes provide strong evidence of a near - shore lacustrine environment. |
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