Uranium-234
25afed1d23ff3fd538e109022b645893f8bb6d22
Identity
- Substance
- fo-b61313e66a8bd8af Isotope
- Source
- bafu algorithm addition
- Unit
- Bq
- Context
- Environmental → Water → River
- CAS
- 13966-29-5
- EC
- —
Context
- Dimension
- Environmental
- Media
- Water
- Water body
- River
Source lists
2| List | Version | Source flow | Name there | Why this flow |
|---|---|---|---|---|
| bafu | 2026-v1 | 1687b21c-eea9-5a22-8869-c45c0fee162b | Uranium-234 | The CAS numbers are the same (13966-29-5); both name the same compartment. |
| bafu | 2026-v1 | 904480cf-3418-5567-9c14-d34f4a748325 | Uranium-234 | The CAS numbers are the same (13966-29-5); no flow of this substance sat in that compartment, so this one was created for the row. |
Concept associations
2| Source list | Source flow | Name there | Compartment there | Match | Conversion |
|---|---|---|---|---|---|
| bafu 2026-v1 | 904480cf-3418-5567-9c14-d34f4a748325 | Uranium-234 | emissions to water / river | broadMatch | — |
| bafu 2026-v1 | 1687b21c-eea9-5a22-8869-c45c0fee162b | Uranium-234 | emissions to water / river | closeMatch | — |
History
The change log and the PROV-O trail (0 consensus changes)
These are the heaviest sections of this page and the least often read, so the page does not pay for them until you ask.
Full record
Flow JSON
{
"altLabel": [],
"properties": {
"https://w3id.org/chemrof/molecular_formula": {
"@id": "https://w3id.org/chemrof/molecular_formula",
"@value": [
"U"
],
"attested_by": {
"U": [
"enrich_references.pubchem_semantic",
"rdkit_post_consensus"
]
},
"rdfs:label": "Molecular formula",
"provenance": [
{
"prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704"
],
"prov:wasDerivedFrom": "pubchem.props.Molecular Formula"
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
]
}
]
},
"https://w3id.org/chemrof/inchi2d_key_string": {
"@id": "https://w3id.org/chemrof/inchi2d_key_string",
"@value": [
"JFALSRSLKYAFGM-AHCXROLUSA-N"
],
"attested_by": {
"JFALSRSLKYAFGM-AHCXROLUSA-N": [
"enrich_references.pubchem_semantic",
"rdkit_post_consensus"
]
},
"rdfs:label": "InChIKey",
"provenance": [
{
"prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704"
],
"prov:wasDerivedFrom": "pubchem.props.InChIKey"
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
]
}
]
},
"https://w3id.org/chemrof/smiles_string": {
"@id": "https://w3id.org/chemrof/smiles_string",
"@value": [
"[U]"
],
"attested_by": {
"[234U]": [
"enrich_references.pubchem_semantic",
"rdkit_post_consensus"
],
"[U]": [
"enrich_references.pubchem_semantic"
]
},
"rdfs:label": "SMILES",
"provenance": [
{
"prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704"
],
"prov:wasDerivedFrom": "pubchem.props.SMILES"
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
]
},
{
"prov:wasGeneratedBy": "semantic_typing.classify",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
],
"prov:wasDerivedFrom": "smiles_string.stereochemistry_removed"
}
]
},
"https://w3id.org/chemrof/inchi2d_string": {
"@id": "https://w3id.org/chemrof/inchi2d_string",
"@value": [
"InChI=1S/U/i1-4"
],
"attested_by": {
"InChI=1S/U/i1-4": [
"enrich_references.pubchem_semantic",
"rdkit_post_consensus"
]
},
"rdfs:label": "InChI",
"provenance": [
{
"prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704"
],
"prov:wasDerivedFrom": "pubchem.props.InChI"
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
]
}
]
},
"https://w3id.org/chemrof/IUPAC_name": {
"@id": "https://w3id.org/chemrof/IUPAC_name",
"@value": [
"uranium-234"
],
"attested_by": {
"uranium-234": [
"enrich_references.pubchem_semantic"
]
},
"rdfs:label": "IUPAC name",
"provenance": {
"prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704"
],
"prov:wasDerivedFrom": "pubchem.identifiers.IUPAC Name"
}
},
"https://w3id.org/chemrof/molecular_mass": {
"@id": "https://w3id.org/chemrof/molecular_mass",
"rdfs:label": "Molecular mass",
"@value": [
234.041
],
"provenance": [
{
"prov:wasGeneratedBy": "rdkit_pre_consensus",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
]
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
]
}
],
"attested_by": {
"234.041": [
"rdkit_post_consensus",
"rdkit_pre_consensus"
]
},
"http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/GM-PER-MOL"
},
"https://w3id.org/chemrof/monoisotopic_mass": {
"@id": "https://w3id.org/chemrof/monoisotopic_mass",
"rdfs:label": "Monoisotopic mass",
"@value": [
234.040952
],
"provenance": [
{
"prov:wasGeneratedBy": "rdkit_pre_consensus",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
]
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
]
}
],
"attested_by": {
"234.040952": [
"rdkit_post_consensus",
"rdkit_pre_consensus"
]
},
"http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/GM-PER-MOL"
},
"isotope_lookup": {
"is_kbq_candidate": true,
"matched": true,
"matched_on": "Uranium-234",
"claimed_nuclide": "U-234",
"resolved_nuclide": "U-234",
"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=0.0054±0.5%; α=100%; SF=1.64e-9±2.2%; 28Mg=1.4e-11±0.3%; 24Ne+26Ne=9e-12±0.7%"
},
{
"check": "half_life_sources_agree",
"passed": true,
"detail": {
"pubchem_days": 89668875.0,
"chemlin_days": 89668875.0,
"ratio": 1.0
}
}
],
"reason": "",
"source": "pubchem_pug_view_annotation_heading",
"sources": [
"pubchem_pug_view_annotation_heading",
"https://www.chemlin.org"
],
"isomer_resolution": {
"wanted_nuclide": "U-234",
"expected_half_life_days": 89668875.0,
"attempted_slugs": [
"234"
],
"attempted_urls": [
"https://www.chemlin.org/isotope/uranium-234"
],
"strategy": "half_life_agrees_with_pubchem",
"selected_slug": "uranium-234",
"selected_half_life": "2.455(6)e5 years",
"selected_half_life_days": 89668875.0,
"half_life_ratio_to_pubchem": 1.0,
"alternates": []
}
},
"relationships": {
"parent_element_flow_object_id": "fo-93d10c394b58394e",
"relationship_type": "isotope_of"
},
"isotope": {
"nuclide": "234U",
"mass_number": 234,
"atomic_mass_and_uncertainty_u": "234.040950296 ± 0.000001212",
"half_life_and_uncertainty": "245.5 ky ± 0.6",
"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%",
"discovery_year": "1912",
"specific_activity_bq_per_g": "230370257.49594",
"specific_activity_bq_per_g_value": 230370257.49594,
"half_life_chemlin": "2.455(6)e5 years",
"chemlin_url": "https://www.chemlin.org/isotope/uranium-234",
"isomer_resolution": {
"wanted_nuclide": "U-234",
"expected_half_life_days": 89668875.0,
"attempted_slugs": [
"234"
],
"attempted_urls": [
"https://www.chemlin.org/isotope/uranium-234"
],
"strategy": "half_life_agrees_with_pubchem",
"selected_slug": "uranium-234",
"selected_half_life": "2.455(6)e5 years",
"selected_half_life_days": 89668875.0,
"half_life_ratio_to_pubchem": 1.0,
"alternates": []
},
"symbol": "U",
"isomeric_state": "",
"metastable": false
},
"https://w3id.org/chemrof/nucleon_number": {
"rdfs:label": "nucleon number",
"@value": [
234
],
"http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/NUM",
"provenance": {
"prov:wasGeneratedBy": "semantic_typing.classify",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:wasDerivedFrom": "isotope.mass_number"
}
},
"https://w3id.org/chemrof/symbol": {
"rdfs:label": "symbol",
"@value": [
"U"
],
"provenance": {
"prov:wasGeneratedBy": "semantic_typing.classify",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:wasDerivedFrom": "isotope.symbol"
}
},
"https://w3id.org/chemrof/half_life": {
"rdfs:label": "half life",
"@value": [
245500.0
],
"http://qudt.org/schema/qudt/hasUnit": "https://vocab.brightway.one/units/unit/YR",
"provenance": {
"prov:wasGeneratedBy": "semantic_typing.classify",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:wasDerivedFrom": "isotope.half_life_and_uncertainty"
}
},
"https://w3id.org/chemrof/decay_mode": {
"rdfs:label": "decay mode",
"@value": [
"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%"
],
"provenance": {
"prov:wasGeneratedBy": "semantic_typing.classify",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:wasDerivedFrom": "isotope.decay_modes"
}
},
"https://w3id.org/chemrof/isomeric_smiles_string": {
"rdfs:label": "isomeric smiles string",
"@value": [
"[234U]"
],
"provenance": [
{
"prov:wasGeneratedBy": "enrich_references.pubchem_semantic",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704"
],
"prov:wasDerivedFrom": "pubchem.props.SMILES"
},
{
"prov:wasGeneratedBy": "rdkit_post_consensus",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"[234U]"
]
},
{
"prov:wasGeneratedBy": "semantic_typing.classify",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:wasDerivedFrom": "smiles_string"
}
]
},
"https://w3id.org/chemrof/has_element": {
"rdfs:label": "has element",
"@value": [
{
"@id": "https://vocab.brightway.dev/flow-objects/fo-93d10c394b58394e"
}
],
"provenance": {
"prov:wasGeneratedBy": "semantic_typing.classify",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:wasDerivedFrom": "relationships.parent_element_flow_object_id"
}
}
},
"references": [
{
"@id": "https://commonchemistry.cas.org/detail?cas_rn=13966-29-5",
"provenance": {
"prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704;CAS:13966-29-5"
],
"prov:wasDerivedFrom": "pubchem.identifiers[13966-29-5]"
}
},
{
"@id": "https://comptox.epa.gov/dashboard/DTXSID40891752",
"provenance": {
"prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704;CAS:13966-29-5"
],
"prov:wasDerivedFrom": "pubchem.identifiers[13966-29-5]"
}
},
{
"@id": "https://pubchem.ncbi.nlm.nih.gov/compound/61704",
"provenance": {
"prov:wasGeneratedBy": "enrich_references.pubchem_compound",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704;CAS:13966-29-5"
],
"prov:wasDerivedFrom": "pubchem.by_cas[13966-29-5]"
}
},
"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",
"https://www.chemlin.org/isotope/uranium-234",
{
"@id": "https://www.wikidata.org/wiki/Q2153640",
"provenance": {
"prov:wasGeneratedBy": "enrich_references.pubchem_identifier_url",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"CID:61704;CAS:13966-29-5"
],
"prov:wasDerivedFrom": "pubchem.identifiers[13966-29-5]"
}
}
],
"prefLabel": [
{
"@value": "Uranium-234",
"@language": "en",
"@lang": "en",
"provenance": {
"prov:wasGeneratedBy": "bootstrap_labels",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"EF 3.1"
],
"prov:wasDerivedFrom": "legacy name field"
}
}
],
"@type": [
"https://w3id.org/chemrof/Isotope",
"https://w3id.org/chemrof/Radionuclide"
],
"http://www.w3.org/2004/02/skos/core#definition": [],
"uuid": "25afed1d23ff3fd538e109022b645893f8bb6d22",
"identifier": "",
"name": "Uranium-234",
"source": "bafu algorithm addition",
"cas_numbers": [
"13966-29-5"
],
"ec_numbers": [],
"context": {
"dimension": "Environmental",
"media": "Water",
"water_body": "River"
},
"synonyms": [],
"lcia_methods": [],
"unit": "Bq",
"input_datasets": [],
"context_iri": "https://vocab.brightway.one/flow-contexts/envi-wate-rive",
"unit_iri": "https://vocab.brightway.one/units/unit/BQ",
"flow_object_id": "fo-b61313e66a8bd8af",
"concept_associations": [
{
"@type": "xkos:ConceptAssociation",
"xkos:sourceConcept": {
"@id": "https://vocab.brightway.one/bafu/2026-v1/flow/904480cf-3418-5567-9c14-d34f4a748325",
"skos:prefLabel": "Uranium-234",
"context": "emissions to water / river",
"qudt:hasUnit": {
"@id": "https://vocab.brightway.one/units/unit/BQ"
},
"skos:broadMatch": {
"@id": "https://vocab.brightway.dev/elementary-flows/25afed1d23ff3fd538e109022b645893f8bb6d22"
}
},
"xkos:targetConcept": {
"@id": "https://vocab.brightway.dev/elementary-flows/25afed1d23ff3fd538e109022b645893f8bb6d22"
},
"provenance": {
"prov:wasGeneratedBy": "merge_bafu",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"bafu:2026-v1:904480cf-3418-5567-9c14-d34f4a748325",
"Uranium-234",
"",
"algorithm.lookup_order=cas>ec>label",
"algorithm.basis=cas:13966-29-5",
"algorithm.flow_object_candidates=1",
"algorithm.elementary_candidates=14",
"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"
],
"prov:wasDerivedFrom": "algorithmic_fallback:lookup_order(cas>ec>label);basis(cas:13966-29-5);flow_object_candidates(1);elementary_candidates(14);selector(new-elementary-flow-created);exact-iri-shortcircuit;up-tree-filter;score=(2*unit_exact)+context_overlap-context_penalty+context_iri_exact;contradiction-veto"
}
},
{
"@type": "xkos:ConceptAssociation",
"xkos:sourceConcept": {
"@id": "https://vocab.brightway.one/bafu/2026-v1/flow/1687b21c-eea9-5a22-8869-c45c0fee162b",
"skos:prefLabel": "Uranium-234",
"context": "emissions to water / river",
"qudt:hasUnit": {
"@id": "https://vocab.brightway.one/units/unit/KiloBQ"
},
"skos:closeMatch": {
"@id": "https://vocab.brightway.dev/elementary-flows/25afed1d23ff3fd538e109022b645893f8bb6d22"
}
},
"xkos:targetConcept": {
"@id": "https://vocab.brightway.dev/elementary-flows/25afed1d23ff3fd538e109022b645893f8bb6d22"
},
"provenance": {
"prov:wasGeneratedBy": "merge_bafu",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"bafu:2026-v1:1687b21c-eea9-5a22-8869-c45c0fee162b",
"Uranium-234",
"",
"algorithm.lookup_order=cas>ec>label",
"algorithm.basis=cas:13966-29-5",
"algorithm.flow_object_candidates=1",
"algorithm.elementary_candidates=15",
"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(cas:13966-29-5);flow_object_candidates(1);elementary_candidates(15);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": {},
"cas_match_labels": {},
"general_comment": "",
"_transformed": false,
"_provided": {
"name": null,
"synonyms": [],
"context": [],
"cas_numbers": [],
"ec_numbers": [],
"unit": null
},
"elementary_flow_id": "25afed1d23ff3fd538e109022b645893f8bb6d22"
}