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Technical Paper

Long-term impact of PM2.5 mass and sulfur reductions on ultrafine particle trends in Boston, MA from 1999 to 2018

ORCID Icon, , &
Pages 700-707 | Received 20 Aug 2019, Accepted 03 May 2020, Published online: 02 Jul 2020

Figures & data

Figure 1. Time series of log UFP, 1999–2018.

Figure 1. Time series of log UFP, 1999–2018.

Figure 2. Time series of PM2.5 mass, 1999–2018.

Figure 2. Time series of PM2.5 mass, 1999–2018.

Figure 3. Time series of S, 1999–2018.

Figure 3. Time series of S, 1999–2018.

Figure 4. Estimated Annual UFP Penalties Due to PM2.5 Mass and S Trends.

Figure 4. Estimated Annual UFP Penalties Due to PM2.5 Mass and S Trends.

Table 1. Comparison of estimated annual and study period UFP penalties in full model vs. model without date categories.

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