MUSCAT : The study assessed the levels, chemical composition and sources of airborne particulate matter, including seasonal variations, to support national air quality monitoring and environmental protection efforts.

It focused on two major categories of airborne particles: PM10, which have a diameter of less than 10 micrometres, and fine particles known as PM2.5, with a diameter of less than 2.5 micrometres. Both are important indicators for assessing air quality and understanding potential environmental and health impacts.

Air samples were collected during two periods representing the summer and winter seasons to examine seasonal variations in particle concentrations and chemical composition, as well as the influence of weather conditions and local environmental characteristics.

The study analysed the elemental and ionic components of the particles to identify their chemical properties and determine the contribution of natural and human-related sources.

These sources include dust, soil and sea spray, as well as emissions associated with various human activities.

According to the findings, the analyses recorded no significant increases in the chemical components covered by the study, providing reassuring indications about the levels of these components at the monitoring locations during the two sampling periods.

The findings also provide a scientific database on the chemical composition and geographical and seasonal distribution of particulate matter across Oman, helping identify its sources and the factors influencing its concentration.

Covering all governorates through 33 monitoring locations, the study provides data to support environmental planning, improve air quality monitoring programmes and strengthen the assessment of environmental changes at both local and national levels.

The Environment Authority said it continues to conduct scientific research and develop environmental monitoring systems as part of its efforts to maintain air quality, protect public health, conserve natural resources and advance environmental sustainability in Oman.

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