Integrated Method of Combining Fixed and Mobile Stations for Air Pollution Tracking and Reduction Assessment
Abstract
An integrated method combining continuous air pollution monitoring at fixed and mobile stations is developed for tracking volatile organic compound (VOC) sources and reduction assessment after correction. The approach is implemented at Linyuan Petrochemical Industrial Park in southern Taiwan, where complex emission sources of different industrial Hazardous Air Pollutants (HAPs), metropolitan transportation and small business workshops are present at local communities.
The method contains four workflow stages. Stage I, monitoring at sensitive receptors (schools) near the industrial park are selected for continuous and long-term HAPs exposure assessment. An automatic gas chromatography (Auto-GC, MiTAP P310 Tricorntech, Taiwan) capable of measuring >15 VOCs is installed in a slat-mountable cabinet with an anemometer (Met One Instruments, US) for wind field information. The concentrations of each speciated VOC is analyzed to determine the direction of VOCs sources based on meteorological data and facility inventories. In Stage II, a sport-utility-vehicle equipped with the same Auto-GC and anemometer is deployed as mobile station for fast onsite analysis to track and verify the VOC source. The mobile station can be placed inside the process plant to further narrow down the emission location. In Stage III, both fixed station and mobile monitoring results are provided to the plant manager to develop a reduction plan. The correction plan is then reviewed, approved and implemented. During Stage IV, the effectiveness of the reduction process is evaluated and maintained by the same continuous monitoring at receptor stations as in Stage I. In this study, the method has successfully identified three key fugitive HAPs (benzene, butadiene and vinyl chloride) from the industrial park and confirmed the plants as emission sources. With the corrective processes, the emissions of benzene, butadiene and vinyl chloride from the Linyuan Industrial Park have been reduced by 10, 2, and 1.5 folds, respectively. The technique utilizing portable Auto-GC has demonstrated that one can precisely track the emission source with greater temporal and spatial resolutions, which facilitates the effectiveness of emission reduction plan. It also serves as an onsite monitoring tool for HAPs exposures assessment at communities.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.A11I2677T
- Keywords:
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- 0345 Pollution: urban and regional;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0368 Troposphere: constituent transport and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 3307 Boundary layer processes;
- ATMOSPHERIC PROCESSES;
- 3360 Remote sensing;
- ATMOSPHERIC PROCESSES