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The study aims to identify seasonal variations in gaseous air pollutants in Phnom Penh.

May 22, 2026

Seasonal characterization of gaseous air pollutants in Phnom Penh, Cambodia

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The study aims to identify seasonal variations in gaseous air pollutants in Phnom Penh.
Characterized pollutant levels over six months, covering both rainy and dry seasons.
Analyzed nitric oxide, nitrogen dioxide, nitrogen oxides, ozone, and carbon monoxide concentrations.
Examined meteorological factors' influence on pollutant levels and determined diurnal patterns.
In the rainy season, NO, NO2, and NOx showed higher concentrations compared to the dry season.
Ozone levels were elevated during the dry season, indicating different emission sources like vehicular emissions and biomass burning.
CO concentrations remained stable, and diurnal analysis revealed peaks correlating with rush hours and sunlight intensity.

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Randomized trial investigates seasonal air pollution patterns in Phnom Penh, indicating diverse emission sources.

Doeurn et al. (2026) studied this question.

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