Dust and bio-burning in polluted cities like Delhi, Arabian Sea region: study

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A new study has found that burning mineral dust and biomaterials from northwestern India and Pakistan have polluted cities such as Delhi and the Arabian Sea.

Aryabhata Research Institute (ARIES) in Nainital, an autonomous research institute under the Department of Science and Technology (DST), along with Indian and foreign collaborators, studied the chemical composition and source component of Total Suspended Particles (TSP). , Including all aerosols and air pollution in the central Himalayan region.

“The Himalayan region is the main source of aerosols in the center of polluted cities such as mineral dust, biodegradable, secondary sulfate, secondary nitrate from northwest India and Pakistan, the Thar Desert and the Arabian Sea, and long-distance sea-mixed aerosols,” he said. The Ministry of Technology shared the findings of the study.

Aerosol is a collection of solid particles or liquid droplets dispersed in air. The study of the source distribution of air pollution, which clarifies atmospheric chemistry, emission source origin and aerosol transport pathways in the Central Himalayas, will also help to assess the contribution and temporal variability of sources affecting the region through regional transport. As a climate impact assessment, the study says.

The study also found that the Himalayan region is considered a vulnerable environment, with a unique contribution to the Asian climate.

The study notes that “there is a gap in the knowledge of primary and secondary organic carbon (POC, SOC) fractions due to the lack of statistical methods for identifying and measuring sources of air pollution at a receiver site in the central Indian Himalayas.” .

The study revealed that ninidol is the main aerosol source

* Mineral dust (34 percent)
* Bio-combustion (27 percent)
* Secondary sulfate (20 percent)
* Secondary nitrate (9 percent)
* Long-haul marine aerosols (10 percent)

The spring and summer were dominated by mineral dust and biodegradable and secondary sulfate in the winter.





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