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Guang Pu Xue Yu Guang Pu Fen Xi

Title:		[Discharge ion mobility spectrometry of ketonic organic compounds]
Author(s):		Huang GD; Han HY; Jia XD; Jin SP; Li JQ; Wang HM; Tang XS; Jiang HH; Chu YN; Zhou SK;
Address:		"Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Key Laboratory of Environmental Optics and Technology, Chinese Academy of Sciences, Hefei 230031, China"
Journal Title:		Guang Pu Xue Yu Guang Pu Fen Xi
Year:		2007
Volume:		27
Issue:		5
Page Number:		833 - 836
DOI:
ISSN/ISBN:		1000-0593 (Print) 1000-0593 (Linking)
Abstract:		"Ion mobility spectrometry (IMS) is a sensitive technique for fast on-line monitoring trace volatile organic compounds based upon the mobilities of gas phase ions at ambient pressure in weak electric field. In the present work, protonated water reactant ions were successfully prepared, and eight ketones were studied on a homemade high-resolution IMS apparatus using a discharge ionization source. The reduced mobility values of all ions were derived from the observed ion mobility spectra. The experimentally determined reduced mobilities for acetone, 2-butone, 1-methyl-2-pyrrolidinone acetophenone, cyclohexanone and product ions were compared with the previously reported values in the Ni-IMS, indicating that they are in good agreement. The reduced mobilities of methyl isopropyl ketone, 4-methyl-2-pentanone and cyclopentanone ions were given for the first time. The ionization process for organic compounds in the authors' discharge ion mobility spectrometer is suggested to be similar to Ni-IMS system, i.e., the proton transfer reactions produce protonated ketone ions. In addition, a linear correlation was found between the reduced mobilities of the ketone ions and their molecular masses. Qualitative measurements show that the limit of detection is in the ng x L(-1) order of magnitude in the authors' discharge ion mobility spectrometer"
Keywords:		Ions/chemistry Ketones/*analysis/chemistry Spectrum Analysis/instrumentation/*methods;
Notes:		"MedlineHuang, Guo-dong Han, Hai-yan Jia, Xian-de Jin, Shun-ping Li, Jian-quan Wang, Hong-mei Tang, Xiao-shuan Jiang, Hai-he Chu, Yan-nan Zhou, Shi-kang chi English Abstract Research Support, Non-U.S. Gov't China 2007/07/28 Guang Pu Xue Yu Guang Pu Fen Xi. 2007 May; 27(5):833-6"