Quantitative evaluation of water-soluble iron in atmospheric particulates to reactive oxygen species via DTT assay

Key Points

• Reactive oxygen species levels are significantly influenced by water-soluble iron concentrations in atmospheric particulates, suggesting environmental concerns.
• The DTT assay effectively quantifies the ability of water-soluble iron to generate reactive oxygen species from particulates.
• Observational analysis across multiple air quality monitoring sites shows varying levels of oxidative stress potential related to particulates.
• Understanding the relationship between water-soluble iron and oxidative stress informs public health recommendations regarding air quality.