Table · dataset · 2026
Solid Waste Burning: An Overlooked Atmospheric Source of p‑Phenylenediamine Antioxidants and Their Quinones
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<i>N</i>,<i>N</i>′-Disubstituted <i>p</i>-phenylenediamines (PPDs) and their oxidized derivatives (PPD-Qs) are widely used as rubber antioxidants, but their atmospheric sources remain incompletely characterized.
Description
Here we systematically investigate solid waste burning as a previously overlooked source of atmospheric PPDs and PPD-Qs. Field measurements of uncontrolled open burning and controlled incineration, combined with suspect screening and targeted analysis, revealed distinct emission profiles.
Suspect screening detected and annotated 47 PPD-related features (20 confirmed, five tentatively identified, and 22 provisionally annotated), with more features detected in open burning PM<sub>2.5</sub> (<i>n</i> = 43) than in incineration PM<sub>2.5</sub> (<i>n</i> = 27). Quantitative analysis showed that open burning predominantly emitted parent PPDs at higher concentrations (median: 11.54 μg/g PM<sub>2.5</sub>), whereas incineration was characterized by a higher relative abundance of PPD-Qs (median: 2.50 μg/g PM<sub>2.5</sub>).
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In a screening-level esimate for China, open burning accounted for more than 99.7% of the estimated emissions of the 10 targeted ∑(PPDs + PPD-Qs) from solid waste burning in China. These findings suggest that solid waste burning is an overlooked source of atmospheric PPDs and PPD-Qs, indicating the need to incorporate waste disposal into emission inventories and targeted emission control strategies.
Links
Where it is published
- DOI doi.org/10.1021/acs.estlett.6c00796.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
Provenance · 1 source records, 15 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34021321 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
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| concepts[field].local:field:astronomy | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:chemistry | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
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| concepts[field].local:field:ocean-atmospheric | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:psychology-behavioral | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:social-science | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/rights |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |