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Long-chain alkyl diol proxies and their applications in GC-MS analysis

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Version 2 2024-06-03, 01:38
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posted on 2024-06-03, 01:38 authored by Kotaro Hoshi, Madoka Kobayashi, Akira Kuwata, Ken Sawada

Long-chain (C28, C30, and C32) alkyl diols (LCD) in marine sediments are considered to originate from marine diatom genus Proboscia and Eustigmatophytes. LCD has been proposed as a proxy for upwelling, riverine input and sea surface temperature, but has not yet been applied much to palaeoceanographic studies. Long-chain (C27 and C29) hydroxy alkenoates such as 12-hydroxy methyl alkanoate (MA) were found in marine sediments and also derived from diatom Proboscia. In this study, we analyzed LCD and 12-OH MA in surface sediment from the Northwest Pacific off the coast of Sanriku and Proboscia alata culture sample. We identified monosaturated and saturated 1,13-, 1,14-, and 1,15-diols, as well as saturated 12-OH MA.

Funding

Precise reconstruction of variation in paleovegetation during Cretaceous hot period by analyses of terrestrial plant-derived organic molecules in sediments

Japan Society for the Promotion of Science

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Refinement of biomarker-based paleovegetation analysis, and its application to reconstruction of the paleovegetational variation in the northern Japan over the past 5 million years

Japan Society for the Promotion of Science

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Elucidation of the variation in marine primary production and the land-ocean biogeochemical linkage in North Pacific Ocean

Japan Society for the Promotion of Science

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History

Corresponding author email address

souryuu1223@eis.hokudai.ac.jp

Title (in Japanese)

GC-MS分析における長鎖アルキルジオール指標とその応用

Manuscript title (in Japanese)

北西太平洋三陸沖の表層堆積物および珪藻 Proboscia alata 培養試料における長鎖アルキルジオール・ヒドロキシアルケノエイトの GC-MS 分析

Authors (in Japanese)

星 恒太郎, 小林 まどか, 桑田 晃, 沢田 健

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© 2024 The Japanese Association of Organic Geochemists

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