What question did this study set out to answer?

The aim is to analyze air pollution exposure disparities over time, focusing on economic sectors and states.

June 12, 2026Science AdvancesOpen Access

PM 2.5 air pollution inequities in the US by sector and state: Past trajectories and future directions

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Analysis reveals air pollution disparities by sector and state, indicating focused intervention areas.

The aim is to analyze air pollution exposure disparities over time, focusing on economic sectors and states.
Utilized the EQUATES emission inventory from 2002 to 2019.
Applied the InMAP Source-Receptor Matrix model for exposure prediction.
Disaggregated data by emissions sector across US census tracts.
Absolute disparities in PM2.5 exposure have decreased, but relative disparities remain unchanged.
Transportation and electricity sectors show decreasing disparities, while residential and cooking emissions are increasing.
Industrial emissions contribute the highest exposure and disparities, highlighting areas for regulation.

Bekbulat et al. (2026) studied this question.

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