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- W4323304990 abstract "Oxidative potential (OP) has gained attention as a parameter that can reveal the ability of different properties of particulate matter (PM) to generate reactive oxygen species (ROS) as one single value. Moreover, OP is also believed to be a predictor of toxicity and hence the health effects of PM. This study evaluated the OP of PM10, PM2.5, and PM1.0 samples using dithiothreitol assays in two cities of Chile (Santiago and Chillán). The results showed that the OP was different between cities, PM size fractions, and seasons. Additionally, OP was strongly correlated with certain metals and meteorological variables. Higher mass-normalized OP was observed during cold periods in Chillán and warm periods in Santiago and was associated with PM2.5 and PM1. On the other hand, volume-normalized OP was higher during winter in both cities and for PM10. Additionally, we compared the OP values to the Air Quality Index (AQI) scale and found cases of days that were classified as having “good” air quality (supposed to be less harmful to health) showing extremely high OP values that were similar to those on days that were classified as “unhealthy”. Based on these results, we suggest using the OP as a complementary measure to the PM mass concentration because it includes important new information related to PM properties and compositions that could help improve current air quality management tools." @default.
- W4323304990 created "2023-03-07" @default.
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- W4323304990 date "2023-03-01" @default.
- W4323304990 modified "2023-10-18" @default.
- W4323304990 title "The oxidative potential of airborne particulate matter in two urban areas of Chile: More than meets the eye" @default.
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- W4323304990 doi "https://doi.org/10.1016/j.envint.2023.107866" @default.
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