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• W4281381549 endingPage "113499" @default.
• W4281381549 startingPage "113499" @default.
• W4281381549 abstract "Particulate matter (PM) has been considered to be closely related to human health, especially fine particulate matter. However, whether PM mass concentration alone is a good indicator for health impact remains a challenging question. In this study, emissions from residential coal combustion (RCC), one of the important PM sources in northern China, were tested to examine the relationship between the emission factors of particle-generated reactive oxygen species (ROS) (EFROS) and PM (EFPM). A total of 24 combinations of source tests were conducted, including eight types of coal with different geological maturities (two anthracites and six bituminous) burned in three types of stoves (one honeycomb coal stove, one old chunk stove, and one new chunk stove). Here, ROS was defined as generated hydroxyl radical (·OH) by PM, and results showed EFROS from 24 residential coal combustion varied greatly by nearly 20 times. EFROS ranged 0.78-14.85 and 2.99-12.91 mg kg-1 for the emissions from honeycomb and chunk coals, respectively. Moreover, the correlation between EFROS and EFPM was significantly positive in honeycomb coal emissions (r = 0.82, p < 0.05), but it was insignificant in chunk coal emissions (r = 0.07, p > 0.05). For honeycomb coal emissions, organic carbon (OC) was quite abundant in PM and it might be the predominant contributor to both EFPM and EFROS, resulting in a strong and positive correlation. For chunk coal emissions, high EFROS was mainly related to relatively high metal emissions in AN and LVB, while the metals were not major components in PM, leading to a poor correlation between EFPM and EFROS. Therefore, this study revealed that PM was not always positively correlated with ROS from residential coal burning, and the relationship was mainly determined by the compositions of PM, suggesting PM mass concentration alone may not be the best indicator for assessing health impacts." @default.
• W4281381549 created "2022-05-25" @default.
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• W4281381549 date "2022-09-01" @default.
• W4281381549 modified "2023-10-17" @default.
• W4281381549 title "Investigating the relationship between mass concentration of particulate matter and reactive oxygen species based on residential coal combustion source tests" @default.
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• W4281381549 doi "https://doi.org/10.1016/j.envres.2022.113499" @default.
• W4281381549 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35618007" @default.
• W4281381549 hasPublicationYear "2022" @default.
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