What question did this study set out to answer?

This research aims to examine how the concentration of carbonaceous components in ultrafine particles changes with seasons and time of day.

July 1, 2026AtmosphereOpen Access

Seasonal and Diurnal Variation of Carbonaceous Components in PM0.1 Collected at Phnom Penh City, Cambodia

View Full Paper

Ask AI

Bookmark

Authors

Randomized trial examines carbonaceous components in ultrafine particles in Phnom Penh, suggesting pollution sources vary by season.

This research aims to examine how the concentration of carbonaceous components in ultrafine particles changes with seasons and time of day.
Collected PM0.1 samples over 14 consecutive days during wet (September 2024) and dry seasons (February 2025).
Analyzed mass concentration of ultrafine particles, organic carbon (OC), and elemental carbon (EC).
Used backward trajectory analysis and satellite data to identify pollution sources.
Average PM0.1 concentration in February was 8.5 μg/m3, three times higher than in September (3.9–11.3 μg/m3).
POC concentrations in February were nearly four times higher than in September.
SOC concentrations peaked during February daytime at 1.4 ± 1.0 μg/m3, indicating photochemical activity.

Sieng et al. (2026) studied this question.

View Full Paper

Ask AI

Bookmark