Higher cytotoxicity in human lung cells suggested due to presence of Particulate Matter (PM) 2.5
Part of: GS Prelims and GS-III – Environment; Pollution
- A recent study – ‘Insights on the biological role of ultrafine particles of size PM<0.25: a prospective study from New Delhi’ was conducted recently.
Proportion of Ultrafine Particles:
- Particulate matter of below 0.25 micrometres constituted the highest share in the composition of PM2.5 around the year as compared to particles of other sizes.
- Exposure to ultrafine particles of below 0.25 micrometres was also associated with over two-fold higher cytotoxicity as compared to exposure to other sizes.
- Celebration of Diwali.
- Stubble burning in neighbouring states of Punjab and Haryana.
- Secondary formation of particles due to favourable meteorological conditions.
- The low temperature and high humidity during winter nights enhance the fog-smog-fog cycle and result in 2-3-fold increase in PM concentration compared to pre-monsoon and South-West monsoon season.
- Lung cancer
- Other heart and lung related problems