{
  "abstract": "High Resolution Image Download MS PowerPoint Slide The oxidative potential (OP) of PM 2.5 was investigated during two measurement campaigns in 2024 (winter and summer) done simultaneously at an urban background and a traffic site. The research provides unprecedented chemical detail for this region, integrating elemental analysis (ED-XRF), carbonaceous fractions (OC/EC, WSOC), major ions, organic tracers (sugars/levoglucosan), and water-soluble organic nitrogen (WSON). The OP was quantified by using two assays: dithiothreitol (OP DTT ) and ascorbic acid (OP AA ). Source apportionment revealed competing trends of sources limiting spatial and seasonal variabilities and distinct drivers for the two OP assays. Traffic emerged as the primary contributor to OP AA at both sites, while OP DTT was influenced by traffic, secondary organic aerosols (SOAs), biomass burning, and resuspension/construction. Sea spray, nitrate, and construction-related emissions significantly impacted OP DTT but had a negligible effect on OP AA . Primary biological aerosols (fungal spores) influenced the OP AA . Seasonal variations showed dominance of traffic and biomass burning in winter (50–60% of OP), whereas sulfate and SOA became prominent during summer, for OP DTT . OP AA peaked in summer, while OP DTT peaked in winter. Traffic-induced SOA exhibits a higher redox activity relative to its mass contribution, opposite to sulfate. Season-dependent mitigation strategies could be useful to effectively reduce the oxidative burden of PM 2.5 .",
  "abstract_shown": true,
  "affiliations": [
    "Dipartimento di Ingegneria dell’Innovazione, Università del Salento, Via Per Monteroni 165, Lecce 73100, Italy",
    "Istituto di Scienze dell’Atmosfera e del Clima (ISAC), Consiglio Nazionale delle Ricerche (CNR), Str. Prv. Lecce-Monteroni km 1.2, Lecce 73100, Italy",
    "Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali DiSTeBA, Università del Salento, Via Per Monteroni 165, Lecce 73100, Italy",
    "Dipartimento di Matematica e Fisica, Università del Salento, Via Per Arnesano, Lecce 73100, Italy",
    "Dipartimento di Chimica, Università degli Studi di Bari, Via Orabona 4, Bari 70126, Italy"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 16,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Serena Potì",
      "orcid": "0009-0004-4521-5950"
    },
    {
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        2,
        1
      ],
      "name": "Laura Martina",
      "orcid": "0009-0007-8518-7415"
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    {
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        1
      ],
      "name": "Florin Unga",
      "orcid": "0000-0002-8490-0940"
    },
    {
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        1
      ],
      "name": "Daniela Cesari",
      "orcid": "0000-0003-1229-0714"
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    {
      "affs": [
        1
      ],
      "name": "Adelaide Dinoi",
      "orcid": "0000-0002-1869-3963"
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    {
      "affs": [
        1
      ],
      "name": "Antonio Pennetta",
      "orcid": "0000-0002-6760-9393"
    },
    {
      "affs": [
        1
      ],
      "name": "Ermelinda Bloise",
      "orcid": "0000-0003-3380-3996"
    },
    {
      "affs": [
        1
      ],
      "name": "Paola Semeraro",
      "orcid": "0000-0001-7682-2252"
    },
    {
      "affs": [
        1
      ],
      "name": "Giuseppe Deluca",
      "orcid": "0009-0009-0287-9702"
    },
    {
      "affs": [
        1
      ],
      "name": "Cirillo Luca Ciricugno"
    },
    {
      "affs": [
        2
      ],
      "name": "Livia Giotta",
      "orcid": "0000-0002-5240-0677"
    },
    {
      "affs": [
        2
      ],
      "name": "Maria Giulia Lionetto",
      "orcid": "0000-0003-3752-0192"
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    {
      "affs": [
        3
      ],
      "name": "Lucio Calcagnile",
      "orcid": "0000-0001-8800-218X"
    },
    {
      "affs": [
        4
      ],
      "name": "Annarosa Mangone",
      "orcid": "0000-0002-4757-1228"
    },
    {
      "affs": [
        2,
        1
      ],
      "name": "Maria Rachele Guascito",
      "orcid": "0000-0002-3399-4983"
    },
    {
      "affs": [
        1
      ],
      "name": "Daniele Contini",
      "orcid": "0000-0003-4454-0642"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2czqtxccvvk17.bib",
  "cited_by": 5,
  "doi": "10.1021/acs.est.6c02676",
  "fulltext_url": null,
  "id": "2czqtxccvvk17",
  "issns": [
    "0013-936X",
    "1520-5851"
  ],
  "landing_url": "https://doi.org/10.1021/acs.est.6c02676",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
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      "openalex",
      "1902|Atmospheric chemistry and aerosols"
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  "pdf_url": null,
  "pmcid": "PMC13262043",
  "pmid": "42183662",
  "published": "2026-05-25",
  "publisher": "American Chemical Society",
  "ris": "https://research.draconitic.com/paper/2czqtxccvvk17.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T13:21:15Z",
      "native_id": "W7162300702",
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      "url": "https://doi.org/10.1021/acs.est.6c02676"
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  "subjects": [
    {
      "field": "earth",
      "origin": "openalex:1902|Atmospheric chemistry and aerosols",
      "subfield": "atmospheric"
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  ],
  "title": "Unraveling the Different Drivers of PM 2.5 Mass and Oxidative Potential at Two Sites of Southern Italy",
  "title_text": "Unraveling the Different Drivers of PM 2.5 Mass and Oxidative Potential at Two Sites of Southern Italy",
  "type": "peer-reviewed",
  "updated_at": "2026-11-07T13:21:01Z",
  "url": "https://research.draconitic.com/paper/2czqtxccvvk17",
  "venue": "Environmental Science & Technology",
  "versions": []
}