One-third of Delhi’s PM2.5 is ammonium sulfate: Study
Published on: Dec. 26, 2025, 3:40 a.m. | Source: Hindustan Times
A 2025 Harvard-led study, conducted by researchers from Harvard TH Chan School of Public Health, found that sulfate particles, including ammonium sulfate, were among the strongest contributors to asthma hospitalisations.
