Publications by authors named "Neel Kotra"
Environ Pollut
November 2013
Article Synopsis
- The study examines the toxicity of fine particulate matter (PM2.5) in Atlanta using freshwater rotifers as test organisms.
- PM samples were extracted in water and methanol, and their toxic effects were measured in terms of LC50, indicating that ambient particles can kill between 50% of the rotifers at concentrations of 5 to 400 μg of PM.
- Methanol extracts of the aerosols proved to be significantly more toxic (8 ± 6 times) to the rotifers than water extracts, and over 70% of the observed toxicity was linked to the hydrophobic fraction of PM, suggesting complex interactions among different PM components.
Environ Sci Technol
October 2012
Article Synopsis
- * The study found that the oxidative potential of particulate matter is significantly higher in methanol extracts, with a notable contribution from hydrophobic compounds, evidenced by decreased DTT response after separation.
- * Correlations between DTT activities and the organic carbon content indicate that hydrophobic organic fractions, such as brown carbon, play a substantial role in the oxidative properties of ambient aerosols, suggesting avenues for future research on aerosol toxicity sources.
