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| Characterization of VOCs and odorous compounds from industrial sources in Binhai New Area, Tianjin |
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Abstract Volatile organic compound (VOC) samples were collected from six industrial sources including pharmacy, bike manufacturing, oil refinery, petrochemical, resin synthesis and rubber manufacturing. The samples were preconcentrated on a cold trap and then analyzed by gas chromatography (GC) and mass spectrometry detection (MS) adopting USEPA TO-14A/15 method. VOCs concentrations and profiles were developed after analysis. Concentrations of above six sources were 16.8, 115.3, 204.6, 225.3, 10.9, 191.7mg/m3, respectively. According to the source profiles, toluene was the most abundant component in both profiles of pharmacy source and bike manufacturing source, with abundance of 79.1% and 94% respectively. Petrochemical source was characterized by high o,m,p-xylene (more than 60%). Rubber manufacturing source exhibited the highest percentage of sulfur compounds among all sources. High level of styrene was found in the resin synthesis source, whereas oil refinery source was dominated by halocarbon. Thus, more attention should be paid to these sources for its odor pollution potential.
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Received: 15 February 2011
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