A Verification of Free Radical Mechanism in the Photochemical Reaction of n-Pentane Sulfur Dioxide by ESR

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (9): 1455.

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A Verification of Free Radical Mechanism in the Photochemical Reaction of n-Pentane Sulfur Dioxide by ESR

XU Zi-Li¹, SHANG Jing¹, LIU Chun-Ming¹, DU Yao-Guo¹, WANG Ling², GUO Hai-Chen², DONG Feng-Xia², LI Wen-Yan²

1. Department of Environmetnal Science, Jilin University, Changchun 130023, China;
2. Analytical and Testing Center, Jilin University, Changchun 130023, China

Received:1999-03-23 Online:1999-09-24 Published:1999-09-24

Abstract

Abstract: The gaseous photochemical reaction of n-pentane and sulfur dioxide was studied.Aseries of gaseous products such as alcohols, ketones, acids, esters and inorganic compound were identified by GC/MS and GC.According to the characters of the compounds and the free radical theory, the free radical mechanism of this gaseous photochemical reaction was suggested.The free radical mechanism was verified directly by means of the gaseous free radicals measured by spin trapping-ESR methods in which PBN was selected as the spintrap.

Key words: ESR, Spin trapping, Photochemical reaction, Sulfur dioxide, n-Pentane

CLC Number:

O643

TrendMD:

XU Zi-Li, SHANG Jing, LIU Chun-Ming, DU Yao-Guo, WANG Ling, GUO Hai-Chen, DONG Feng-Xia, LI Wen-Yan. A Verification of Free Radical Mechanism in the Photochemical Reaction of n-Pentane Sulfur Dioxide by ESR[J]. Chem. J. Chinese Universities, 1999, 20(9): 1455.

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A Verification of Free Radical Mechanism in the Photochemical Reaction of n-Pentane Sulfur Dioxide by ESR

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