Uranium-238

Substance: fo-bbc90a2dbdb048ca Isotope
Source: bafu algorithm addition
Unit: kBq
Context: Environmental → Water → Lake
CAS: 24678-82-8
EC: —

Dimension: Environmental
Media: Water
Water body: Lake

List	Version	Source flow	Name there	Why this flow
bafu	2026-v1	725c8ba7-8b3a-5404-a5fb-1aa7c01ed012	Uranium-238	The CAS numbers are the same (24678-82-8); both name the same compartment.
bafu	2026-v1	d7e285ae-d90e-5065-aa9c-8490993e3017	Uranium-238	The CAS numbers are the same (24678-82-8); no flow of this substance sat in that compartment, so this one was created for the row.

Source list	Source flow	Name there	Compartment there	Match	Conversion
bafu 2026-v1	d7e285ae-d90e-5065-aa9c-8490993e3017	Uranium-238	emissions to water / lake	broadMatch	—
bafu 2026-v1	725c8ba7-8b3a-5404-a5fb-1aa7c01ed012	Uranium-238	emissions to water / lake	closeMatch	—

consensus-flow-list 2

Every implementation that says anything about this flow. Published as is what this list did with the row: where more than one implementation states a number and they agree it publishes it as agreed; where only one speaks, as sole; where they disagree it publishes nothing and asks.

Method	Implementation	Category	Place	Factor	Published as
EF 3.1	consensus-flow-list	Ionising radiation, human health	—	0.107	carried
Stepwise 2006	consensus-flow-list	Ionizing radiation	—	10.952381	carried

This flow in the difference report

The change log and the PROV-O trail (0 consensus changes)

Open the changes page

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Flow JSON

{
  "altLabel": [],
  "properties": {
    "isotope_lookup": {
      "is_kbq_candidate": true,
      "matched": true,
      "matched_on": "Uranium-238",
      "claimed_nuclide": "U-238",
      "resolved_nuclide": "U-238",
      "state_resolution": {
        "claimed_state": "",
        "selected_state": "",
        "strategy": "state_taken_as_written",
        "candidates": []
      },
      "checks": [
        {
          "check": "ground_state_does_not_decay_by_isomeric_transition",
          "passed": true,
          "detail": "IS=99.2742±1%; α=100%; SF=5.44e-5±0.7%; 2β-=2.2e-10±0.3%"
        },
        {
          "check": "half_life_sources_agree",
          "passed": true,
          "detail": {
            "pubchem_days": 1630110750000.0,
            "chemlin_days": 1631937000000.0,
            "ratio": 1.001120322652924
          }
        }
      ],
      "reason": "",
      "source": "pubchem_pug_view_annotation_heading",
      "sources": [
        "pubchem_pug_view_annotation_heading",
        "https://www.chemlin.org"
      ],
      "isomer_resolution": {
        "wanted_nuclide": "U-238",
        "expected_half_life_days": 1630110750000.0,
        "attempted_slugs": [
          "238"
        ],
        "attempted_urls": [
          "https://www.chemlin.org/isotope/uranium-238"
        ],
        "strategy": "half_life_agrees_with_pubchem",
        "selected_slug": "uranium-238",
        "selected_half_life": "4.468(6)e9 years",
        "selected_half_life_days": 1631937000000.0,
        "half_life_ratio_to_pubchem": 1.001120322652924,
        "alternates": []
      }
    },
    "relationships": {
      "parent_element_flow_object_id": "fo-93d10c394b58394e",
      "relationship_type": "isotope_of"
    },
    "isotope": {
      "nuclide": "238U",
      "mass_number": 238,
      "atomic_mass_and_uncertainty_u": "238.050786936 ± 0.000001601",
      "half_life_and_uncertainty": "4.463 Gy ± 0.003",
      "decay_modes": "IS=99.2742±1%; α=100%; SF=5.44e-5±0.7%; 2β-=2.2e-10±0.3%",
      "discovery_year": "1896",
      "specific_activity_bq_per_g": "12436.520359891",
      "specific_activity_bq_per_g_value": 12436.520359891,
      "half_life_chemlin": "4.468(6)e9 years",
      "chemlin_url": "https://www.chemlin.org/isotope/uranium-238",
      "isomer_resolution": {
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        "expected_half_life_days": 1630110750000.0,
        "attempted_slugs": [
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        ],
        "attempted_urls": [
          "https://www.chemlin.org/isotope/uranium-238"
        ],
        "strategy": "half_life_agrees_with_pubchem",
        "selected_slug": "uranium-238",
        "selected_half_life": "4.468(6)e9 years",
        "selected_half_life_days": 1631937000000.0,
        "half_life_ratio_to_pubchem": 1.001120322652924,
        "alternates": []
      },
      "symbol": "U",
      "isomeric_state": "",
      "metastable": false
    },
    "https://w3id.org/chemrof/nucleon_number": {
      "rdfs:label": "nucleon number",
      "@value": [
        238
      ],
      "http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/NUM",
      "provenance": {
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        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:wasDerivedFrom": "isotope.mass_number"
      }
    },
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      ],
      "provenance": {
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        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:wasDerivedFrom": "isotope.symbol"
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    },
    "https://w3id.org/chemrof/half_life": {
      "rdfs:label": "half life",
      "@value": [
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      ],
      "http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/YR",
      "provenance": {
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    },
    "https://w3id.org/chemrof/decay_mode": {
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      ],
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        "prov:wasDerivedFrom": "isotope.decay_modes"
      }
    },
    "https://w3id.org/chemrof/has_element": {
      "rdfs:label": "has element",
      "@value": [
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        "prov:wasDerivedFrom": "relationships.parent_element_flow_object_id"
      }
    }
  },
  "references": [
    {
      "@id": "https://commonchemistry.cas.org/detail?cas_rn=24678-82-8",
      "provenance": {
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        "prov:wasAttributedTo": "consensus-flow-list",
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        ],
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      }
    },
    "https://pubchem.ncbi.nlm.nih.gov/element/92",
    "https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/element/92/JSON",
    "https://www.chemlin.org",
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  ],
  "prefLabel": [
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      "@language": "en",
      "@lang": "en",
      "provenance": {
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        "prov:wasAttributedTo": "consensus-flow-list",
        "prov:hadPrimarySource": [
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        ],
        "prov:wasDerivedFrom": "legacy name field"
      }
    }
  ],
  "@type": [
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    "https://w3id.org/chemrof/Radionuclide"
  ],
  "http://www.w3.org/2004/02/skos/core#definition": [],
  "uuid": "ca3c9068aa89c4d2949049cfee4bf5d81bbea6cf",
  "identifier": "",
  "name": "Uranium-238",
  "source": "bafu algorithm addition",
  "cas_numbers": [
    "24678-82-8"
  ],
  "ec_numbers": [],
  "context": {
    "dimension": "Environmental",
    "media": "Water",
    "water_body": "Lake"
  },
  "synonyms": [],
  "lcia_methods": [],
  "unit": "kBq",
  "input_datasets": [],
  "context_iri": "https://vocab.brightway.one/flow-contexts/envi-wate-lake",
  "unit_iri": "https://vocab.brightway.one/units/unit/KiloBQ",
  "flow_object_id": "fo-bbc90a2dbdb048ca",
  "concept_associations": [
    {
      "@type": "xkos:ConceptAssociation",
      "xkos:sourceConcept": {
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        "skos:prefLabel": "Uranium-238",
        "context": "emissions to water / lake",
        "qudt:hasUnit": {
          "@id": "https://vocab.brightway.one/units/unit/BQ"
        },
        "skos:broadMatch": {
          "@id": "https://vocab.brightway.dev/elementary-flows/ca3c9068aa89c4d2949049cfee4bf5d81bbea6cf"
        }
      },
      "xkos:targetConcept": {
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          "Uranium-238",
          "",
          "algorithm.lookup_order=cas>ec>label",
          "algorithm.basis=cas:24678-82-8",
          "algorithm.flow_object_candidates=1",
          "algorithm.elementary_candidates=13",
          "algorithm.selector_reason=new-elementary-flow-created",
          "algorithm.score_rule=exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto",
          "algorithm.winning_score=1",
          "algorithm.tie_on_top_score=true"
        ],
        "prov:wasDerivedFrom": "algorithmic_fallback:lookup_order(cas>ec>label);basis(cas:24678-82-8);flow_object_candidates(1);elementary_candidates(13);selector(new-elementary-flow-created);exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto"
      }
    },
    {
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        "skos:prefLabel": "Uranium-238",
        "context": "emissions to water / lake",
        "qudt:hasUnit": {
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        },
        "skos:closeMatch": {
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      }
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  ],
  "_sources": {},
  "cas_match_labels": {},
  "general_comment": "",
  "_transformed": false,
  "_provided": {
    "name": null,
    "synonyms": [],
    "context": [],
    "cas_numbers": [],
    "ec_numbers": [],
    "unit": null
  },
  "elementary_flow_id": "ca3c9068aa89c4d2949049cfee4bf5d81bbea6cf"
}

A flow can be wrong in three ways, and they are decided differently. Pick the one that matches what you are looking at.

You do not need to run a build or clone anything. Name the row and say what your evidence is; the measurement is done for you. How contributing works

Uranium-238

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