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n-Alkan-2-one distributions in a northeastern China peat core spanning the last 16 kyr
Zheng,YH (Zheng, Yanhong)[1,2]; Zhou,WJ (Zhou, Weijian)[2,3]; Liu,XM (Liu, Xiaomin)[2]; Zhang,CLL (Zhang, Chuanlun L.)[4]
2011-01-30
发表期刊ORGANIC GEOCHEMISTRY
卷号42期号:1页码:25-30
文章类型期刊论文
摘要

Most research on long chain methyl ketones has focused on their origins and distributions. Their application in paleoclimate studies is less common than that of other n-alkyl lipids. The goal of this research was to explore this potential by studying n-alkan-2-ones from the Hani peat sequence in northeastern China. They were identified using gas chromatography-mass spectrometry (GC-MS) and showed a distribution ranging from C(19) to C(31) with a strong odd/even predominance. This type of distribution is considered to derive from Sphagum and microbial oxidation of n-alkanes. Comparison with climate sensitive indicators and macrofossil analysis shows that microbial oxidation of n-alkanes derived from higher plants was enhanced during the warm early Holocene period. This led us to develop three n-alkan-2-one proxies - C(27)/Sigma C(23-31) (C(27)/HMW-KET), carbon preference index (CPI(H)-KET) and average chain length (ACL((27-31))-KET) - as possible indicators of paleoclimate in the peat-forming environment. These proxies, in combination with C(27) n-alkane delta D values and peat cellulose delta(18)O records, might allow examination of paleo-ecosystem behavior during climatic evolution in northeastern China over the past 16,000 yr.

DOI10.1016/j.orggeochem.2010.10.003
收录类别SCI
语种英语
引用统计
被引频次:19[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10279
专题加速器质谱中心
通讯作者Zhou,WJ (Zhou, Weijian)[2,3]
作者单位1.State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069, China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
3.Xi’an AMS Center, Xi’an 710061, China;
4.Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA
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GB/T 7714
Zheng,YH ,Zhou,WJ ,Liu,XM ,et al. n-Alkan-2-one distributions in a northeastern China peat core spanning the last 16 kyr[J]. ORGANIC GEOCHEMISTRY,2011,42(1):25-30.
APA Zheng,YH ,Zhou,WJ ,Liu,XM ,&Zhang,CLL .(2011).n-Alkan-2-one distributions in a northeastern China peat core spanning the last 16 kyr.ORGANIC GEOCHEMISTRY,42(1),25-30.
MLA Zheng,YH ,et al."n-Alkan-2-one distributions in a northeastern China peat core spanning the last 16 kyr".ORGANIC GEOCHEMISTRY 42.1(2011):25-30.
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