Photoionization Ion Mobility Spectrometry (UV-IMS) for the Isomeric Volatile Organic Compounds
LI Hu1,3, NIU Wen-qi2, WANG Hong-mei1, HUANG Chao-qun1, JIANG Hai-he1, CHU Yan-nan1*
1. Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Center of Medical Physics and Technology, Hefei Institutes of Physics, Chinese Academy of Sciences, Hefei 230031, China 2. School of Science, Anhui Agricultural University, Hefei 230036, China 3. Anhui University of Science and Technology, Huainan 232001, China
Abstract：The construction and performance study is reported for a newly developed ultraviolet photoionization ion mobility spectrometry (UV-IMS). In the present paper, an UV-IMS technique was firstly developed to detect eleven isomeric volatile organic compounds including the differences in the structure of carbon chain, the style of function group and the position of function group. Their reduced mobility values were determined and increased in this order: linears<branches<cycles, primary<secondary<tertiary, para-<meta-<ortho- and alcohols <acetones<aromas. The concentrations of analytes were obtained by means of exponential dilution method, and the experiments show that the limit of detection of the homemade UV-IMS was around ppb-ppm.
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