Search Results - "Kohnen, Math E. L"

Biases from natural sulphurization in palaeoenvironmental reconstruction based on hydrocarbon biomarker distributions by Kohnen, Math E. L, Sinninghe Damste, Jaap S, De Leeuw, Jan W

“…Research shows, that if not taken properly into account, the process of natural sulphurization may lead to a severe bias in the interpretation of the…”
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Recognition of Paleobiochemicals by a Combined Molecular Sulfur and Isotope Geochemical Approach by Math E. L. Kohnen, Schouten, Stefan, Jaap S. Sinninghe Damsté, de Leeuw, Jan W., Merritt, Dawn A., Hayes, J. M.

“…Study of organic matter in immature sediments from a Messinian evaporitic basin shows that consideration of structures, modes of occurrence, and carbon…”
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A 6,000-year sedimentary molecular record of chemocline excursions in the Black Sea by Sinninghe Damsté, Jaap S, Wakeham, Stuart G, Kohnen, Math E. L, Hayes, J. M, de Leeuw, Jan W

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Thiophenic biomarkers for palaeoenvironmental assessment and molecular stratigraphy by Damsté, Jaap S. Sinninghe, Kohnen, Math E. L, de Leeuw, Jan W

“…Reconstruction of ancient depositional environments is an important objective in the Earth sciences. A discussion of reconstruction of paleoenvironments is…”
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Chemocline of the Black Sea by Sinninghe Damsté, Jaap S, de Leeuw, Jan W, Wakeham, Stuart G, Hayes, J.M, Kohnen, Math E. L

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Restricted utility of aryl isoprenoids as indicators for photic zone anoxia by Koopmans, Martin P., Schouten, Stefan, Kohnen, Math E.L., Sinninghe Damsté, Jaap S.

“…In a North Sea oil, the carotenoid derivatives β-carotene, β-isorenieratane, and isorenieratane were identified, together with a series of aryl isoprenoids…”
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Early diagenesis of bacteriohopanepolyol derivatives: Formation of fossil homohopanoids by Sinninghe Damsté, Jaap S., Van Duin, Adri C.T., Hollander, David, Kohnen, Math E.L., De Leeuw, Jan W.

“…Diagenetic pathways of bacteriohopanepolyol derivatives are proposed based on the concentrations and 13C contents of homohopanes, homohop-17(21)-enes,…”
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Organic sulfur compounds formed during early diagenesis in Black Sea sediments by Wakeham, Stuart G., Sinninghe Damsté, Jaap S., Kohnen, Math E.L., De Leeuw, Jan W.

“…Sediments from Units I and II of the Black Sea were analyzed to assess the early diagenetic formation of organic sulfur compounds (OSC). A series of isomeric C…”
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Origin of low-molecular-weight alkylthiophenes in pyrolysates of sulphur-rich kerogens as revealed by micro-scale sealed vessel pyrolysis by Sinninghe Damsté, Jaap S, Kohnen, Math E.L, Horsfield, Brian

“…Micro-scale sealed vessel (MSSV) pyrolysis experiments have been conducted at temperatures of 150, 200, 250, 300, 330 and 350°C for various times on a…”
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The effect of hydrosulphurization on stable carbon isotopic compositions of free and sulphur-bound lipids by Schouten, Stefan, Sinninghe Damsté, Jaap S., Kohnen, Math E.L., De Leeuw, Jan W.

“…1-Decene was subjected to hydrosulphurization under phase-transfer conditions at room temperature. Compound-specific isotope analysis revealed that 1-decene…”
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Quantitative assessment of mono- and polysulphide-linked carbon skeletons in sulphur-rich macromolecular aggregates present in bitumens and oils by Schouten, Stefan, Damsté, Jaap S.Sinninghe, Baas, Marianne, Kock-Van Dalen, A.C., Kohnen, Math E.L., De Leeuw, Jan W.

“…Polar fractions of three immature sulphur-rich sediments and four sulphur-rich oils, all of Miocene age, were studied using two selective chemolytic methods,…”
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The combined application of organic sulphur and isotope geochemistry to assess multiple sources of palaeobiochemicals with identical carbon skeletons by Kohnen, M E, Schouten, S, Sinninghe Damsté, J S, de Leeuw, J W, Merrit, D, Hayes, J M

“…Five immature sediments from a Messinian evaporitic basin, representing one evaporitic cycle, were studied using molecular organic sulphur and isotope…”
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