{
  "abstract": "Aerosol iron (Fe) significantly impacts human health, atmospheric chemistry and marine biogeochemistry. The stable isotope ratio of Fe, typically reported as δ ⁵⁶ Fe, has emerged as a promising method for source apportionment of total and soluble aerosol Fe. However, the δ ⁵⁶ Fe endmember values remain poorly constrained for aerosol Fe from various non-dust sources, impeding the application of Fe isotopes in atmospheric research. This work measured isotopic compositions for aerosol Fe from desert dust and several anthropogenic sources. The average δ ⁵⁶ Fe was determined to be +0.14 ‰ ± 0.10 ‰ for the seven dust samples we examined, in good agreement with previous work. We found that different anthropogenic aerosols exhibit a wide range of Fe isotopic composition. Compared to desert dust, the average δ ⁵⁶ Fe was found to be higher for power plant coal fly ash (+0.26 ‰ ± 0.18 ‰, n =28), slightly lower for steelwork fly ash (−0.07 ‰ ± 0.41 ‰, n =18), and considerably lower for biofuel burning aerosol (−0.28 ‰ ± 0.39 ‰, n =11). In addition, the average δ ⁵⁶ Fe was determined to be +0.20 ‰ ± 0.12 ‰ for municipal incineration fly ash ( n =2), +0.38 ‰ ± 0.13 ‰ for heavy oil bottom ash ( n =1), and +0.08 ‰ ± 0.13 ‰ for certificated urban particulate matter sample ( n =1). We suggest that not all the anthropogenic aerosol Fe is isotopically lighter than natural dust Fe, in contrast to what is conventionally assumed. Our findings also imply that Fe isotope-based source apportionment must account for the δ ⁵⁶ Fe endmember variability both among and within different anthropogenic aerosols. Overall, our work substantially improves our ability to constrain δ ⁵⁶ Fe endmember values for various anthropogenic sources.",
  "abstract_shown": true,
  "affiliations": [
    "Guangzhou Institute of Geochemistry (Guangzhou, China)",
    "Tianjin University (Tianjin, China)"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "name": "Yifan Zhang"
    },
    {
      "name": "Guanhong Zhu"
    },
    {
      "name": "Rui Li",
      "orcid": "0009-0009-1574-6247"
    },
    {
      "name": "Mingyuan Liu",
      "orcid": "0000-0003-4391-3929"
    },
    {
      "name": "Yi Yang"
    },
    {
      "name": "Tianyu Zhang"
    },
    {
      "name": "Yizhu Chen"
    },
    {
      "affs": [
        0
      ],
      "name": "Jinlong Ma"
    },
    {
      "name": "Xinming Wang",
      "orcid": "0000-0002-1982-0928"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Mingjin Tang",
      "orcid": "0000-0002-8756-8445"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/45ac3qfq8y93w.bib",
  "cited_by": 0,
  "doi": "10.5194/acp-26-14073-2026",
  "fulltext_url": null,
  "id": "45ac3qfq8y93w",
  "issns": [
    "1680-7324"
  ],
  "landing_url": "https://acp.copernicus.org/articles/26/14073/2026/",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1902|Atmospheric chemistry and aerosols"
    ]
  ],
  "openalex": "W7168255548",
  "pdf_url": "https://acp.copernicus.org/articles/26/14073/2026/acp-26-14073-2026.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": "Copernicus GmbH",
  "ris": "https://research.draconitic.com/paper/45ac3qfq8y93w.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:34Z",
      "native_id": "10.5194/acp-26-14073-2026",
      "source": "crossref",
      "url": "https://acp.copernicus.org/articles/26/14073/2026/"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "openalex:1902|Atmospheric chemistry and aerosols",
      "subfield": "atmospheric"
    }
  ],
  "title": "Isotopic composition of aerosol iron from anthropogenic sources: implications for source apportionment of aerosol iron",
  "title_text": "Isotopic composition of aerosol iron from anthropogenic sources: implications for source apportionment of aerosol iron",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:20:34Z",
  "url": "https://research.draconitic.com/paper/45ac3qfq8y93w",
  "venue": "Atmospheric Chemistry and Physics",
  "versions": [
    {
      "doi": "10.5194/egusphere-2026-3780",
      "pid": null,
      "relation": "preprint",
      "title": null,
      "venue": null
    }
  ]
}