Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
Determining the double-bond positions of monounsaturated compounds in the alcohol fraction in seep carbonate | |
Xu, Lanfang1,7; Guan, Hongxiang2,3,4 ; Liu, Lei2,3; Mao, Shengyi1; Feng, Junxi5,6; Su, Zheng1; Liu, Lihua1
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| 2022-06-07 | |
| Source Publication | JOURNAL OF CHROMATOGRAPHY A
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| ISSN | 0021-9673 |
| Volume | 1672Pages:11 |
| Corresponding Author | Guan, Hongxiang(guanhongxiang@ouc.edu.cn) ; Feng, Junxi(fengjunxi@hydz.cn) |
| Abstract | 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. |
| Keyword | 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 |
| WOS Keyword | CHROMATOGRAPHY-MASS-SPECTROMETRY ; DIMETHYL DISULFIDE DERIVATIVES ; CAPILLARY GC-MS ; FATTY-ACIDS ; LIPID BIOMARKER ; STABLE CARBON ; LOCATION ; METHANE ; IDENTIFICATION ; DISSOCIATION |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Biochemistry & Molecular Biology ; Chemistry |
| Funding Organization | 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 Subject | Biochemical Research Methods ; Chemistry, Analytical |
| WOS ID | WOS:000791409400009 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/36443 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Guan, Hongxiang; Feng, Junxi |
| Affiliation | 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 |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation 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. |
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