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Citation: GUO Xian-Hou, WEI Xian-Yong, LIU Fang-Jing, ZONG Zhi-Min, FAN Xing, YU Zhang-Yu. Mass Spectrometric Analysis of Oxygen-containing Organic Compounds in A Middle/Low-temperature Coal Tar from Northern Shaanxi[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(11): 1755-1762. doi: 10.11895/j.issn.0253-3820.181272 shu

Mass Spectrometric Analysis of Oxygen-containing Organic Compounds in A Middle/Low-temperature Coal Tar from Northern Shaanxi

¹ Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining and Technology, Xuzhou 221116, China;
² State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, Ningxia University, Yinchuan 750000, China;
³ School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China

Received Date: 24 April 2018
Revised Date: 3 August 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (No.21576280) and the Program of University in Jiangsu Province for Graduate Student's Innovation in Science Research (No. KYLX16-0548).

The total content of oxygen-containing organic compounds (OCOCs) in middle/low temperature coal tar (M/LTCT) are relatively high. Many OCOCs in M/LTCT are value-added organic compounds. In this investigation, a gas chromatograph-mass spectrometer (GC-MS) and negative-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (NIESIFTICRMS) were used to analyze OCOCs in a M/LTCT from Northern Shaanxi, aiming at understanding the composition and structures of the OCOCs to provide scientific basis for efficiently separating the OCOCs. The results showed that one oxygen-containing species (O₁, most of which are arenols) and two oxygen-containing species (O₂) in the GC-MS-detectable OCOCs accounted for 99.4% and 0.6%, respectively; numbers of carbon, oxygen and aromatic rings in the OCOCs detected with the NIESIFTICRMS were 8-35, 1-5 and 1-4, respectively, and O₁ and O₂ were predominantly abundant among the OCOCs; the main acidic OCOCs were phenol, benzenediols, benzoic acid and their alkyl-substitutes along with cyclanoic and chain alkanoic acids, and the main species were arenols with 1-4 aromatic rings among O₁. GC-MS and NIESIFTICRMS have complementary advantages, and are proved to be effective tools for understanding the composition and structures of OCOCs in M/LTCT at molecular level.
- Middle/low-temperature coal tar,
- Oxygen-containing organic compounds,
- Mass spectrometric analysis
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