<p>Determining the double-bond positions of monounsaturated compounds in the alcohol fraction in seep carbonate</p>

doi:10.1016/j.chroma.2022.463009

GIEC OpenIR

	Determining the double-bond positions of monounsaturated compounds in the alcohol fraction in seep carbonate
	Xu, Lanfang 1,7; Guan, Hongxiang2,3,4 ; Liu, Lei 2,3; Mao, Shengyi 1; Feng, Junxi 5,6; Su, Zheng1 ; Liu, Lihua 1
	2022-06-07
发表期刊	JOURNAL OF CHROMATOGRAPHY A
ISSN	0021-9673
卷号	1672 页码:11
通讯作者	Guan, Hongxiang(guanhongxiang@ouc.edu.cn) ; Feng, Junxi(fengjunxi@hydz.cn)
摘要	The unsaturation patterns of molecular fossils are critical in distinguishing their biological precursors and diagenetic processes. However, questions regarding the determination of double-bond positions of unsaturated dialkyl glycerol ethers (DAGEs) in submarine hydrocarbon seep ecosystems remain unsolved. To address this problem, a protocol for dimethyl disulfide (DMDS) derivative analysis using gas chromatography (GC)-mass spectrometry was optimised. Herein, the double-bond positions of monounsaturated short-chain alcohols, monoalkyl glycerol ethers (MAGEs), and DAGEs in seep carbonates were analysed. Among these compounds, the double-bond positions of trimethylsilyl (TMS) derivatives of the monounsaturated DAGE-DMDS adducts were determined for the first time, with mass spectra characterized by molecular ions (M (+)(.)) and two major diagnostic ions (omega(+)& nbsp;and delta(+) ) cleaved at the double bonds. For both the MAGEs and DAGEs, the double-bond positions of the monounsaturated n-C 16:1-alkyl moieties were identified at omega 5 and omega 7. Compared to monounsaturated short-chain alcohols and MAGEs, both ionization efficiency and relative sensitivity for the TMS derivatives of DAGE-DMDS adducts were low as indicated by the high limit of detection at a signal-to-noise ratio of 3. In addition, the appropriate injection parameters and oven temperature program during GC analyses may be crucial in determining the double-bond positions within monounsaturated DAGEs. (C) 2022 Elsevier B.V. All rights reserved.
关键词	Double-bond position Monounsaturated alkyl glycerol ether lipids Gas chromatography-mass spectrometry (GC-MS) Dimethyl disulfide (DMDS) Seep carbonate
DOI	10.1016/j.chroma.2022.463009
关键词[WOS]	CHROMATOGRAPHY-MASS-SPECTROMETRY ; DIMETHYL DISULFIDE DERIVATIVES ; CAPILLARY GC-MS ; FATTY-ACIDS ; LIPID BIOMARKER ; STABLE CARBON ; LOCATION ; METHANE ; IDENTIFICATION ; DISSOCIATION
收录类别	SCI
语种	英语
资助项目	National Natural Science Foun-dation of China[91958105] ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2021QNLM020002] ; Major Program of Guangdong Basic and Applied Research[2019B030302004]
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry
项目资助者	National Natural Science Foun-dation of China ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao) ; Major Program of Guangdong Basic and Applied Research
WOS类目	Biochemical Research Methods ; Chemistry, Analytical
WOS记录号	WOS:000791409400009
出版者	ELSEVIER
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/36443
专题	中国科学院广州能源研究所
通讯作者	Guan, Hongxiang; Feng, Junxi
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Ocean Univ China, MOE, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Key Lab Submarine Geosci & Prospecting Tech, Qingdao 266100, Peoples R China 3.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266061, Peoples R China 5.Guangzhou Marine Geol Survey, Key Lab Marine Mineral Resources, Guangzhou 511458, Peoples R China 6.China Geol Survey, Technol Ctr Gas Hydrate, Guangzhou 511458, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Xu, Lanfang,Guan, Hongxiang,Liu, Lei,et al. Determining the double-bond positions of monounsaturated compounds in the alcohol fraction in seep carbonate [J]. JOURNAL OF CHROMATOGRAPHY A,2022,1672:11.
APA	Xu, Lanfang.,Guan, Hongxiang.,Liu, Lei.,Mao, Shengyi.,Feng, Junxi.,...&Liu, Lihua.(2022). Determining the double-bond positions of monounsaturated compounds in the alcohol fraction in seep carbonate .JOURNAL OF CHROMATOGRAPHY A,1672,11.
MLA	Xu, Lanfang,et al." Determining the double-bond positions of monounsaturated compounds in the alcohol fraction in seep carbonate ".JOURNAL OF CHROMATOGRAPHY A 1672(2022):11.