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Chemosphere

Title:		Measuring real-time concentration trends of individual VOC in an elementary school using a sub-ppb detection muGC and a single GC-MS analysis
Author(s):		Jian RS; Sung LY; Lu CJ;
Address:		"Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan. Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan; Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan. Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan. Electronic address: cjlu@ntnu.edu.tw"
Journal Title:		Chemosphere
Year:		2014
Volume:		20131207
Issue:
Page Number:		261 - 266
DOI:		10.1016/j.chemosphere.2013.10.094
ISSN/ISBN:		1879-1298 (Electronic) 0045-6535 (Linking)
Abstract:		"This paper reports the results from a field study that used a micro gas chromatograph (muGC) in conjunction with single gas chromatography-mass spectrometry (GC-MS) analysis to obtain the time-dependent concentration changes of individual volatile organic compounds (VOCs). The muGC is capable of performing sub-ppb analysis every 15min and has a total weight of only 3kg, which includes an embedded tablet computer. The field study was conducted in an elementary school near a chemical industrial area. Six VOCs including acetone, 2-butanone, methyl acetate, toluene, m-xylene and isobutyl acetate, were detected at low ppb levels via canister/GC-MS analysis. Five of the six chemicals were successfully quantified using the muGC. The lone exception was acetone, which prematurely breakthrough on the preconcentrator of the muGC because of its high volatility. The continuous analyses performed by the muGC revealed the individual temporal trends of the concentrations for the remaining 5 chemicals. The establishment of real-time trends for each of the chemicals enabled a detailed examination of their correlations"
Keywords:		"Air Pollutants/*analysis Air Pollution, Indoor/*analysis/statistics & numerical data Butanones/analysis Chromatography, Gas Environmental Monitoring/*methods Gas Chromatography-Mass Spectrometry Schools Volatile Organic Compounds/*analysis Xylenes/analysi;"
Notes:		"MedlineJian, Rih-Sheng Sung, Lung-Yu Lu, Chia-Jung eng Research Support, Non-U.S. Gov't England 2013/12/10 Chemosphere. 2014 Mar; 99:261-6. doi: 10.1016/j.chemosphere.2013.10.094. Epub 2013 Dec 7"