Uranium Alpha

Substance: fo-42b901d9886626b1 Atom grouping class
Origin qualifier: alpha_emitters
Source: EF 3.1
Unit: kBq
Context: Environmental → Water → Unknown
CAS: 7440-61-1
EC: 231-170-6
Dimension: Environmental
Media: Water
Water body: Unknown
List	Version	Source flow	Name there	Why this flow
EF	3.1	039af71c-470c-4841-9ba4-8f1744353637	Uranium alpha	The consensus list is built from this one, so this row is the flow itself rather than something matched to it.
bafu	2026-v1	14a54ad2-1243-5874-899a-4b9c6d061c00	Uranium Alpha	This substance answers to the name the row carries; both name the same compartment.
ecoinvent	3.12	1cb0b78b-6fd5-4193-8144-d47478920ced	Uranium Alpha	A curator's mapping table (ecoinvent-3.11-biosphere-EF-3.1-biosphere) names this flow.
ecoinvent	3.8	1cb0b78b-6fd5-4193-8144-d47478920ced	Uranium Alpha	A curator's mapping table (ecoinvent-3.8-biosphere-EF-3.1-biosphere.json) names this flow.
Source list	Source flow	Name there	Compartment there	Match	Conversion
EF 3.1	039af71c-470c-4841-9ba4-8f1744353637	Uranium alpha	Emissions/Emissions to water/Emissions to water, unspecified	exactMatch	—
ecoinvent 3.12	1cb0b78b-6fd5-4193-8144-d47478920ced	Uranium Alpha	water / unspecified	exactMatch	—
ecoinvent 3.8	1cb0b78b-6fd5-4193-8144-d47478920ced	Uranium Alpha	water / unspecified	exactMatch	—
bafu 2026-v1	14a54ad2-1243-5874-899a-4b9c6d061c00	Uranium Alpha	emissions to water / unspecified	closeMatch	—
The change log and the PROV-O trail (1 consensus changes)
Open the changes page
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Flow JSON
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    "isotope_mix_candidates": {
      "element": "Uranium",
      "source": "pubchem_element_isotope_lists",
      "candidates": [
        {
          "nuclide": "215U",
          "mass_number": 215,
          "half_life_and_uncertainty": "1.4 ms ± 0.9",
          "decay_modes": "α=?; β+ ?",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "216U",
          "mass_number": 216,
          "half_life_and_uncertainty": "6.9 ms ± 2.9",
          "decay_modes": "α=100%",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "216Um",
          "mass_number": 216,
          "half_life_and_uncertainty": "1.4 ms ± 0.9",
          "decay_modes": "α=100%",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "217U",
          "mass_number": 217,
          "half_life_and_uncertainty": "850 us ± 710",
          "decay_modes": "α≈100%; β- ?",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "218U",
          "mass_number": 218,
          "half_life_and_uncertainty": "354 us ± 91",
          "decay_modes": "α=100%",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "218Um",
          "mass_number": 218,
          "half_life_and_uncertainty": "408 us ± 125",
          "decay_modes": "α≈100%; IT=?",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "219U",
          "mass_number": 219,
          "half_life_and_uncertainty": "60 us ± 7",
          "decay_modes": "α=100%; β+ ?",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "220U",
          "mass_number": 220,
          "half_life_and_uncertainty": "60 ns [Estimated]",
          "decay_modes": "α ?; β+ ?",
          "relative_abundance": null,
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          "relative_abundance_fraction": null
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        {
          "nuclide": "221U",
          "mass_number": 221,
          "half_life_and_uncertainty": "660 ns ± 140",
          "decay_modes": "α≈100%; β+ ?",
          "relative_abundance": null,
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          "relative_abundance_fraction": null
        },
        {
          "nuclide": "222U",
          "mass_number": 222,
          "half_life_and_uncertainty": "4.7 us ± 0.7",
          "decay_modes": "α=100%; β+ ?",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "223U",
          "mass_number": 223,
          "half_life_and_uncertainty": "65 us ± 12",
          "decay_modes": "α=100%; β+ ?",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "224U",
          "mass_number": 224,
          "half_life_and_uncertainty": "396 us ± 17",
          "decay_modes": "α=100%; β+ ?",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "225U",
          "mass_number": 225,
          "half_life_and_uncertainty": "62 ms ± 4",
          "decay_modes": "α=100%",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "226U",
          "mass_number": 226,
          "half_life_and_uncertainty": "269 ms ± 6",
          "decay_modes": "α=100%",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "227U",
          "mass_number": 227,
          "half_life_and_uncertainty": "1.1 m ± 0.1",
          "decay_modes": "α=100%; β+ ?",
          "relative_abundance": null,
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          "relative_abundance_fraction": null
        },
        {
          "nuclide": "228U",
          "mass_number": 228,
          "half_life_and_uncertainty": "9.1 m ± 0.2",
          "decay_modes": "α=97.5±0.14%; ε=2.5±1.4%",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "229U",
          "mass_number": 229,
          "half_life_and_uncertainty": "57.8 m ± 0.5",
          "decay_modes": "β+≈80%; α≈20%",
          "relative_abundance": null,
          "relative_abundance_source": "",
          "relative_abundance_fraction": null
        },
        {
          "nuclide": "230U",
          "mass_number": 230,
          "half_life_and_uncertainty": "20.23 d ± 0.02",
          "decay_modes": "α=100%; 22Ne=4.8e-12±2%; SF ?",
          "relative_abundance": null,
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          "relative_abundance_fraction": null
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        {
          "nuclide": "231U",
          "mass_number": 231,
          "half_life_and_uncertainty": "4.2 d ± 0.1",
          "decay_modes": "ε≈100%; α=0.004±0.1%",
          "relative_abundance": null,
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        },
        {
          "nuclide": "232U",
          "mass_number": 232,
          "half_life_and_uncertainty": "68.9 y ± 0.4",
          "decay_modes": "α=100%; 24Ne=8.9e-10±0.7%; SF=2.7e-12±0.6%; 28Mg<5e-12%",
          "relative_abundance": null,
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          "nuclide": "233U",
          "mass_number": 233,
          "half_life_and_uncertainty": "159.19 ky ± 0.15",
          "decay_modes": "α=100%; SF<6e-11%; 24Ne=7.2e-11±0.9%; 28Mg<1.3e-13%",
          "relative_abundance": 0.000054,
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          "nuclide": "234U",
          "mass_number": 234,
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          "decay_modes": "IS=0.0054±0.5%; α=100%; SF=1.64e-9±2.2%; 28Mg=1.4e-11±0.3%; 24Ne+26Ne=9e-12±0.7%",
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          "nuclide": "235U",
          "mass_number": 235,
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          "decay_modes": "IS=0.7204±0.6%; α=100%; SF=7e-9±0.2%; 20Ne=8e-10±0.4%; 25Ne≈8e-10%; 28Mg=8e-10%",
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          "decay_modes": "IT=100%",
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          "nuclide": "235Un",
          "mass_number": 235,
          "half_life_and_uncertainty": "3.6 ms ± 1.8",
          "decay_modes": "SF≈100%; IT ?",
          "relative_abundance": null,
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          "nuclide": "236U",
          "mass_number": 236,
          "half_life_and_uncertainty": "23.42 My ± 0.04",
          "decay_modes": "α=100%; SF=9.4e-8±0.4%",
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          "nuclide": "236Um",
          "mass_number": 236,
          "half_life_and_uncertainty": "100 ns ± 4",
          "decay_modes": "IT=100%",
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          "nuclide": "236Un",
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          "half_life_and_uncertainty": "120 ns ± 2",
          "decay_modes": "IT=87±0.6%; SF=13±0.6%; α ?",
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          "nuclide": "237U",
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          "half_life_and_uncertainty": "6.752 d ± 0.002",
          "decay_modes": "β-=100%",
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          "nuclide": "237Um",
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          "nuclide": "238U",
          "mass_number": 238,
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          "decay_modes": "IS=99.2742±1%; α=100%; SF=5.44e-5±0.7%; 2β-=2.2e-10±0.3%",
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          "nuclide": "238Um",
          "mass_number": 238,
          "half_life_and_uncertainty": "280 ns ± 6",
          "decay_modes": "IT=97.4±0.4%; SF=2.6±0.4%",
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          "mass_number": 239,
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          "decay_modes": "β-=100%",
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          "nuclide": "239Un",
          "mass_number": 239,
          "half_life_and_uncertainty": ">250 ns",
          "decay_modes": "SF ?; IT ?",
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          "nuclide": "240U",
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          "half_life_and_uncertainty": "14.1 h ± 0.1",
          "decay_modes": "β-=100%; α ?",
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          "nuclide": "241U",
          "mass_number": 241,
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          "decay_modes": "β- ?",
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          "nuclide": "243U",
          "mass_number": 243,
          "half_life_and_uncertainty": "16 m [Estimated]",
          "decay_modes": "β- ?",
          "relative_abundance": null,
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          "algorithm.flow_object_candidates=1",
          "algorithm.elementary_candidates=12",
          "algorithm.selector_reason=exact-context-iri-match",
          "algorithm.score_rule=exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto"
        ],
        "prov:wasDerivedFrom": "algorithmic_fallback:lookup_order(cas>ec>label);basis(label:Uranium Alpha);flow_object_candidates(1);elementary_candidates(12);selector(exact-context-iri-match);exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto"
      }
    }
  ],
  "_sources": {
    "prefLabel": "normalize_name_case",
    "name": "bootstrap_labels",
    "context": "default_context_mapping",
    "context_iri": "default_context_mapping",
    "unit_iri": "unit_normalization",
    "ec_numbers": "ec_cross_check",
    "properties": "link_flows_to_their_substance",
    "skos_definition": "enrich_references",
    "references": "enrich_references",
    "altLabel": "strip_qualifier_altlabels",
    "cas_match_labels": "consensus_match",
    "concept_associations": "carry_associations_onto_flows",
    "types": "link_flows_to_their_substance",
    "origin_qualifier": "link_flows_to_their_substance",
    "parent_flow_object_id": "link_flows_to_their_substance"
  },
  "cas_match_labels": {
    "7440-61-1": "exactMatch"
  },
  "origin_qualifier": "alpha_emitters",
  "parent_flow_object_id": "fo-93d10c394b58394e",
  "_transformed": true,
  "_provided": {
    "name": "Uranium alpha",
    "synonyms": [],
    "context": [
      "Emissions",
      "Emissions to water",
      "Emissions to water, unspecified"
    ],
    "cas_numbers": [
      "7440-61-1"
    ],
    "ec_numbers": [],
    "unit": "kBq"
  }
}
Uranium Alpha

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