Regional Differences in PM Chemical Composition and Inhalation Risk Assessment: A Case Study of Seoul, Incheon, and Wonju.

This study evaluates the chemical components of an aerodynamic diameter less than 2.5 μm (PM) and its health risks in Seoul, Incheon, and Wonju, South Korea. The results revealed significant regional variations, particularly under the reasonable maximum exposure scenario, with Seoul's average daily dose (6.

Characterization of odorous gases at landfill site and in surrounding areas.

Concentration levels and seasonal variation of odorous gases at landfill site and in surrounding areas within the city of Incheon, South Korea were investigated. Sampling was conducted at 11 points (5 at landfill site and 6 in surrounding areas). The highest concentrations of odorous gases (complex odor, ammonia, acetaldehyde, and VOCs) at landfill site were found in summer, probably due to fast decomposition of waste in high temperature related with more release of ammonia.