| dc.description.abstract | This study investigates that monitoring the concentrations of volatile organic compounds(VOCs), wind speed, wind direction, temperature and humidity in a industrial area for 24 hours by volatile organic compounds automatic sampling equipment. When the VOCs monitoring concentration is higher than alarm value, automatic trigger cylinder sampling will start to analysis of pollutant concentration. The odor activity value (OAV) and weight analysis method were discussed. To establish the pollutants sources, fingerprints and provide reference information for inspection control by Environmental Protection Bureau local government were also major objectives of this research.
This research is based on the high-odor pollution of Toufen industrial zone in Miaoli County. The industrial zone has the highly potential for odor pollutants emissions factory, including the H company (plastic products manufacturing), the C company (chemical materials manufacturing), F Company (textile industry), T Company (chemical materials manufacturing), O Company (chemical materials manufacturing), S Company (chemical materials manufacturing), and V Company (chemical materials manufacturing). The results of the study showed that 5 automatic samplings were triggered and 62 pollutants were analyzed during the monitoring period. The main pollutants were toluene (9.88 ppb), meta-xylene (2.64 ppb), cis-1,2-dichloroethylene (2.56 ppb), ethane (2.26 ppb) and vinyl chloride (1.92 ppb). These pollutants represented and matched the pollution fingerprints of this Toufen industrial zone. According to the analysis results of odor activity value, it obviously showed that toluene (OAV = 0.706), m-xylene (OAV = 0.033), n-propylbenzene (OAV = 0.023), cumene (OAV = 0.018) and isobutyraldehyde (OAV = 0.014) have a highly potential for odor emission. And these pollutants could be regarded as the odor pollution fingerprints of the Toufen industrial zone. Based on the results of weight analysis comparison, the pollutants, such as vinyl chloride, toluene, benzene, methylene chloride and acrylonitrile, should be preferentially controlled in the Toufen industrial zone. The results of the comparison with the raw materials data, H, C, and T company should strengthen the control of toluene and vinyl chloride respectively. However, methylene chloride and acrylonitrile were also still needed to compare and figure out the corresponding pollution emission sources.
According to the results of this study, the automatic sampling technology of volatile organic compounds could be used as a model for the controlling of air pollutants by Environmental Protection Bureau of local government, and also could improve the effectiveness of audit control. | en_US |