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  • Title: Development of a combined real time monitoring and integration analysis system for volatile organic compounds (VOCs).
    Author: Oka K, Iizuka A, Inoue Y, Mizukoshi A, Noguchi M, Yamasaki A, Yanagisawa Y.
    Journal: Int J Environ Res Public Health; 2010 Dec; 7(12):4100-10. PubMed ID: 21317996.
    Abstract:
    A combined integration analysis and real time monitoring (Peak Capture System) system was developed for volatile organic compounds (VOCs). Individual integration analysis and real time monitoring can be used to qualitatively and quantitatively analyze VOCs in the atmosphere and in indoor environments and determine the variation in total VOC (TVOC) concentration with time, respectively. In the Peak Capture System, real time monitoring was used to predict future elevations in the TVOC concentration (peak), and this was used an indicator of when to collect (capture) ambient air samples for integration analysis. This enabled qualitative and quantitative analysis of VOCs when the TVOC concentration was high. We developed an algorithm to predict variation in the TVOC concentration, and constructed an automatic system to initiate air sampling for integration analysis. With the system, auto-sampling and analysis of VOCs in a conventional house were conducted. In comparison with background concentrations, the results of peak analysis enabled identification of compounds whose concentration rose. This also enabled an evaluation of possible VOC emission sources.
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