GIS-Based Analysis of Volatile Organic Compounds in Bucheon, Korea, Using Mobile Laboratory and...

Area of Science:

• Environmental Science
• Atmospheric Chemistry
• Air Quality Monitoring

Background:

• Volatile organic compounds (VOCs) are critical precursors to secondary organic particles, contributing to smog, global warming, and health issues.
• Effective VOC management is essential for mitigating air pollution and its associated environmental and health impacts.

Purpose of the Study:

• To measure and analyze winter volatile organic compound (VOC) concentrations in industrial and residential areas of Bucheon, Korea.
• To identify major VOCs, their sources, and spatial distribution patterns.
• To assess the utility of GIS-based visualization for air quality management.

Main Methods:

• Utilized a mobile laboratory equipped with proton-transfer-reaction time-of-flight mass spectrometry for VOC measurements.
• Collected data on regional characteristics, meteorological conditions, traffic volume, and other environmental variables.
• Employed Geographic Information System (GIS)-based analysis to visualize and interpret spatial and temporal VOC concentrations.

Main Results:

• Toluene, methanol, and n + i-butene were identified as the most abundant VOCs, with average concentrations of 48.3, 34.4, and 32.6 ppb, respectively.
• Highest VOC concentrations were observed near the Ojeong Industrial Complex.
• Mobile pollution sources, particularly traffic, were significant contributors to elevated VOC levels.

Conclusions:

• Industrial complexes and mobile pollution sources are key drivers of VOC concentrations.
• GIS-based visualization enhances the efficiency of identifying air pollution hotspots and managing air quality.
• Comprehensive review of traffic variables is crucial for effective air pollution management strategies.