Serious Changing the PAHs Contents in Suncun Coal through Subcritical Isopropyl Ether_Benzene Pretreatment

Volume 4, Issue 5, October 2019     |     PP. 137-145      |     PDF (189 K)    |     Pub. Date: September 25, 2019
DOI:    249 Downloads     6456 Views  

Author(s)

Zhen-Xue Liu, College of Chemical and Environment Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
Xiao-Wen Zhang, College of Chemical and Environment Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
Xiao-Xuan Wei, College of Chemical and Environment Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
Shi-Xue Zhou, College of Chemical and Environment Engineering, Shandong University of Science and Technology, Qingdao 266590, China.

Abstract
Suncun coal was pretreated with subcritical isopropyl ether/benzene for observing the changes of the polycyclic aromatic hydrocarbons (PAHs) contents. The raw and pretreated coal samples were extracted by using cyclohexane as the first step then extracted by using benzene as the second step respectively. The extracts were analyzed by gas chromatograph-mass spectrometer (GC/MS), and twelve PAHs in extracts were analyzed quantitatively. The results indicated that all the extracts yields and the contents of these PAHs in extracts were different according to the pretreatments and the extracting solvents; and the PAHs contents in all the extracts from pretreated coals were much higher than them from raw coal. Both isopropyl ether and benzene are common solvents we used in laboratory and in industrial; these results show that we need new ideas to study the compositions, the structure and the applications of coal, as well to understand the environmental impact from coal using. And if we want to know what the genuine coal is, more researching work should be done.

Keywords
coal; subcritical; isopropyl ether; benzene; extract; PAHs; GC/MS

Cite this paper
Zhen-Xue Liu, Xiao-Wen Zhang, Xiao-Xuan Wei, Shi-Xue Zhou, Serious Changing the PAHs Contents in Suncun Coal through Subcritical Isopropyl Ether_Benzene Pretreatment , SCIREA Journal of Chemistry. Volume 4, Issue 5, October 2019 | PP. 137-145.

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