IEECAS OpenIR  > 加速器质谱中心
Carbon chain length distribution in n-alkyl lipids: A process for evaluating source inputs to Lake Qinghai
Wang, Z (Wang, Zheng)[1]; Liu, WG (Liu, Weiguo)[1,2]
2012-09-30
Source PublicationORGANIC GEOCHEMISTRY
Volume50Pages:36-43
Subtype期刊论文
Abstract

Lake sediments generally contain a mixture of terrestrial and aquatic source inputs, and determining the major inputs is important for understanding geological records in paleoenvironment and paleoclimate research. In this study we describe the distribution of n-alkanes and n-fatty acids (FAs) in representative modern plants from around Lake Qinghai. We found a significant difference in the average length of n-FA carbon chains (ACL Fa(16-32)) in terrestrial (23.3) and aquatic plants (18.6). The results reveal that ACL Fa(16-32) may essentially serve as a proxy for evaluating the major source inputs to lake sediments. Assessment of surface sediments from the lake showed that the FAs originated from a mixture of inputs, with the aquatic source input predominant at most sites. Additionally, the delta D values of sediment mid-chain n-acids (C-22) showed a relationship with the ACL Fa(16-32) proxy: an increased Fa ACL corresponded to more negative hydrogen isotope ratio values. We suggest that different sources should be considered and ACL Fa(16-32) could be a potential calibration proxy before using delta D values to extract reliable isotopic information from lake water. More attention should be paid to source inputs and their relationship to other geochemical proxies in future studies of lake sediments.

DOI10.1016/j.orggeochem.2012.06.015
Indexed BySCI ; EI
Language英语
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10117
Collection加速器质谱中心
Corresponding AuthorLiu, WG (Liu, Weiguo)[1,2]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, IEE, CAS, Xi’an 710075, China;
2.School of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Recommended Citation
GB/T 7714
Wang, Z ,Liu, WG . Carbon chain length distribution in n-alkyl lipids: A process for evaluating source inputs to Lake Qinghai[J]. ORGANIC GEOCHEMISTRY,2012,50:36-43.
APA Wang, Z ,&Liu, WG .(2012).Carbon chain length distribution in n-alkyl lipids: A process for evaluating source inputs to Lake Qinghai.ORGANIC GEOCHEMISTRY,50,36-43.
MLA Wang, Z ,et al."Carbon chain length distribution in n-alkyl lipids: A process for evaluating source inputs to Lake Qinghai".ORGANIC GEOCHEMISTRY 50(2012):36-43.
Files in This Item:
File Name/Size DocType Version Access License
Carbon chain length (414KB)期刊论文作者接受稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, Z (Wang, Zheng)[1]]'s Articles
[Liu, WG (Liu, Weiguo)[1,2]]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Z (Wang, Zheng)[1]]'s Articles
[Liu, WG (Liu, Weiguo)[1,2]]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Z (Wang, Zheng)[1]]'s Articles
[Liu, WG (Liu, Weiguo)[1,2]]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.