Distribution of environmentally persistent free radicals in size-segregated PMs emitted from residential biomass fuel combustion
Copyright © 2023 Elsevier B.V. All rights reserved..
Environmentally persistent free radicals (EPFRs) are considered as an emerging pollutant due to their potential environmental risks, but the distribution characteristics of particulate matters (PMs)-EPFRs from residential combustion source are poorly understood. In this study, biomass (corn straw, rice straw, pine and jujube wood) combustion was studied in lab-controlled experiments. More than 80% of PM-EPFRs were distributed in PMs with aerodynamic diameter (dae) ≤ 2.1 µm, and their concentration in fine PMs was about 10 times that in coarse PM (2.1 µm ≤ dae ≤ 10 µm). The detected EPFRs were carbon-centered free radicals adjacent to oxygen atoms or a mixture of oxygen- and carbon-centered radicals. The concentrations of EPFRs in coarse and fine PMs were positively correlated with char-EC, but the EPFRs in fine PMs exhibited a negative correlation with soot-EC (p < 0.05). The increase of PM-EPFRs signals with the increased dilution ratio during pine wood combustion was more significant than that from rice straw, which may be resulted from the interactions between the condensable volatiles and the transition metals. Our study provides useful information for better understanding the formation of combustion-derived PM-EPFRs, and will be instructive for its purposeful emissions control.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2023 |
|---|---|
| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:449 |
|---|---|
| Enthalten in: |
Journal of hazardous materials - 449(2023) vom: 05. Mai, Seite 130956 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Zhao, Jinfeng [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
Dilution ratio |
|---|
| Anmerkungen: |
Date Completed 06.03.2023 Date Revised 06.03.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1016/j.jhazmat.2023.130956 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM353189995 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM353189995 | ||
| 003 | DE-627 | ||
| 005 | 20231226055434.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231226s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.jhazmat.2023.130956 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1177.xml |
| 035 | |a (DE-627)NLM353189995 | ||
| 035 | |a (NLM)36812726 | ||
| 035 | |a (PII)S0304-3894(23)00238-8 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Zhao, Jinfeng |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Distribution of environmentally persistent free radicals in size-segregated PMs emitted from residential biomass fuel combustion |
| 264 | 1 | |c 2023 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 06.03.2023 | ||
| 500 | |a Date Revised 06.03.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2023 Elsevier B.V. All rights reserved. | ||
| 520 | |a Environmentally persistent free radicals (EPFRs) are considered as an emerging pollutant due to their potential environmental risks, but the distribution characteristics of particulate matters (PMs)-EPFRs from residential combustion source are poorly understood. In this study, biomass (corn straw, rice straw, pine and jujube wood) combustion was studied in lab-controlled experiments. More than 80% of PM-EPFRs were distributed in PMs with aerodynamic diameter (dae) ≤ 2.1 µm, and their concentration in fine PMs was about 10 times that in coarse PM (2.1 µm ≤ dae ≤ 10 µm). The detected EPFRs were carbon-centered free radicals adjacent to oxygen atoms or a mixture of oxygen- and carbon-centered radicals. The concentrations of EPFRs in coarse and fine PMs were positively correlated with char-EC, but the EPFRs in fine PMs exhibited a negative correlation with soot-EC (p < 0.05). The increase of PM-EPFRs signals with the increased dilution ratio during pine wood combustion was more significant than that from rice straw, which may be resulted from the interactions between the condensable volatiles and the transition metals. Our study provides useful information for better understanding the formation of combustion-derived PM-EPFRs, and will be instructive for its purposeful emissions control | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Dilution ratio | |
| 650 | 4 | |a EPFRs | |
| 650 | 4 | |a Generation | |
| 650 | 4 | |a Particle size distributions | |
| 650 | 4 | |a Solid fuel | |
| 700 | 1 | |a Shi, Lin |e verfasserin |4 aut | |
| 700 | 1 | |a Shi, Jianwu |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Hao |e verfasserin |4 aut | |
| 700 | 1 | |a Lang, Di |e verfasserin |4 aut | |
| 700 | 1 | |a Wei, Zhuo |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Shunling |e verfasserin |4 aut | |
| 700 | 1 | |a Pan, Bo |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Journal of hazardous materials |d 1998 |g 449(2023) vom: 05. Mai, Seite 130956 |w (DE-627)NLM093662688 |x 1873-3336 |7 nnns |
| 773 | 1 | 8 | |g volume:449 |g year:2023 |g day:05 |g month:05 |g pages:130956 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.jhazmat.2023.130956 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 449 |j 2023 |b 05 |c 05 |h 130956 | ||