Technetium-99m
aa28eafd8341dfb6cfa912584037a7b562666b0a
Identity
- Substance
- fo-6f9bc5d050c36e88 Isotope
- Source
- ecoinvent algorithm addition
- Unit
- kBq
- Context
- Environmental → Water → Unconfined aquifer
- CAS
- 378784-45-3
- EC
- —
Context
- Dimension
- Environmental
- Media
- Water
- Water body
- Unconfined aquifer
Source lists
2| List | Version | Source flow | Name there | Why this flow |
|---|---|---|---|---|
| ecoinvent | 3.12 | 954f7083-c85d-428f-af32-177be2e25ac9 | Technetium-99m | A curator's mapping table names this substance, which had no flow in this compartment, so this flow was created for the row. |
| ecoinvent | 3.8 | 954f7083-c85d-428f-af32-177be2e25ac9 | Technetium-99m | A curator's mapping table names this flow. |
Concept associations
2| Source list | Source flow | Name there | Compartment there | Match | Conversion |
|---|---|---|---|---|---|
| ecoinvent 3.12 | 954f7083-c85d-428f-af32-177be2e25ac9 | Technetium-99m | water / ground- | exactMatch | — |
| ecoinvent 3.8 | 954f7083-c85d-428f-af32-177be2e25ac9 | Technetium-99m | water / ground- | exactMatch | — |
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": {
"isotope_lookup": {
"is_kbq_candidate": true,
"matched": true,
"matched_on": "Technetium-99m",
"claimed_nuclide": "Tc-99m",
"resolved_nuclide": "Tc-99m",
"state_resolution": {
"claimed_state": "m",
"selected_state": "m",
"strategy": "state_taken_as_written",
"candidates": []
},
"checks": [
{
"check": "ground_state_does_not_decay_by_isomeric_transition",
"passed": true,
"detail": "IT≈100%; β-=0.0037±0.6%"
},
{
"check": "half_life_sources_agree",
"passed": true,
"detail": {
"pubchem_days": 0.25027499999999997,
"chemlin_days": 0.25027499999999997,
"ratio": 1.0
}
}
],
"reason": "",
"source": "pubchem_pug_view_annotation_heading",
"sources": [
"pubchem_pug_view_annotation_heading",
"https://www.chemlin.org"
],
"isomer_resolution": {
"wanted_nuclide": "Tc-99m",
"expected_half_life_days": 0.25027499999999997,
"attempted_slugs": [
"99",
"99m",
"99m1",
"99m2",
"99m3"
],
"attempted_urls": [
"https://www.chemlin.org/isotope/technetium-99",
"https://www.chemlin.org/isotope/technetium-99m",
"https://www.chemlin.org/isotope/technetium-99m1",
"https://www.chemlin.org/isotope/technetium-99m2",
"https://www.chemlin.org/isotope/technetium-99m3"
],
"strategy": "half_life_agrees_with_pubchem",
"selected_slug": "technetium-99m",
"selected_half_life": "6.0066(2) h (NUBASE2020)",
"selected_half_life_days": 0.25027499999999997,
"half_life_ratio_to_pubchem": 1.0,
"alternates": [
{
"slug": "technetium-99",
"url": "https://www.chemlin.org/isotope/technetium-99",
"half_life": "2.115(12)e5 years (DDEP-2025 [04])",
"half_life_days": 77250375.00000001
}
]
}
},
"relationships": {
"parent_element_flow_object_id": "fo-dc268fb4a63f197d",
"relationship_type": "isotope_of"
},
"isotope": {
"nuclide": "99Tcm",
"mass_number": 99,
"atomic_mass_and_uncertainty_u": "98.906249681 ± 0.000000974",
"half_life_and_uncertainty": "6.0066 h ± 0.0002",
"decay_modes": "IT≈100%; β-=0.0037±0.6%",
"discovery_year": "1958",
"specific_activity_bq_per_g": "1.9515426033329e+17",
"specific_activity_bq_per_g_value": 1.9515426033329e+17,
"half_life_chemlin": "6.0066(2) h (NUBASE2020)",
"chemlin_url": "https://www.chemlin.org/isotope/technetium-99m",
"isomer_resolution": {
"wanted_nuclide": "Tc-99m",
"expected_half_life_days": 0.25027499999999997,
"attempted_slugs": [
"99",
"99m",
"99m1",
"99m2",
"99m3"
],
"attempted_urls": [
"https://www.chemlin.org/isotope/technetium-99",
"https://www.chemlin.org/isotope/technetium-99m",
"https://www.chemlin.org/isotope/technetium-99m1",
"https://www.chemlin.org/isotope/technetium-99m2",
"https://www.chemlin.org/isotope/technetium-99m3"
],
"strategy": "half_life_agrees_with_pubchem",
"selected_slug": "technetium-99m",
"selected_half_life": "6.0066(2) h (NUBASE2020)",
"selected_half_life_days": 0.25027499999999997,
"half_life_ratio_to_pubchem": 1.0,
"alternates": [
{
"slug": "technetium-99",
"url": "https://www.chemlin.org/isotope/technetium-99",
"half_life": "2.115(12)e5 years (DDEP-2025 [04])",
"half_life_days": 77250375.00000001
}
]
},
"symbol": "Tc",
"isomeric_state": "m",
"metastable": true
},
"https://w3id.org/chemrof/nucleon_number": {
"rdfs:label": "nucleon number",
"@value": [
99
],
"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": [
"Tc"
],
"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": [
0.0006852156057494866
],
"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": [
"IT≈100%; β-=0.0037±0.6%"
],
"provenance": {
"prov:wasGeneratedBy": "semantic_typing.classify",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:wasDerivedFrom": "isotope.decay_modes"
}
},
"https://w3id.org/chemrof/has_element": {
"rdfs:label": "has element",
"@value": [
{
"@id": "https://vocab.brightway.dev/flow-objects/fo-dc268fb4a63f197d"
}
],
"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=378784-45-3",
"provenance": {
"prov:wasGeneratedBy": "enrich_references.consensus_cas_link",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"378784-45-3"
],
"prov:wasDerivedFrom": "cas_numbers"
}
},
"https://pubchem.ncbi.nlm.nih.gov/element/43",
"https://pubchem.ncbi.nlm.nih.gov/rest/pug_view/data/element/43/JSON",
"https://www.chemlin.org",
"https://www.chemlin.org/isotope/technetium-99",
"https://www.chemlin.org/isotope/technetium-99m"
],
"prefLabel": [
{
"@value": "Technetium-99m",
"@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": "aa28eafd8341dfb6cfa912584037a7b562666b0a",
"identifier": "",
"name": "Technetium-99m",
"source": "ecoinvent algorithm addition",
"cas_numbers": [
"378784-45-3"
],
"ec_numbers": [],
"context": {
"dimension": "Environmental",
"media": "Water",
"water_body": "Unconfined aquifer"
},
"synonyms": [],
"lcia_methods": [],
"unit": "kBq",
"input_datasets": [],
"context_iri": "https://vocab.brightway.one/flow-contexts/envi-wate-unaq",
"unit_iri": "https://vocab.brightway.one/units/unit/KiloBQ",
"flow_object_id": "fo-6f9bc5d050c36e88",
"concept_associations": [
{
"@type": "xkos:ConceptAssociation",
"xkos:sourceConcept": {
"@id": "https://vocab.brightway.one/ecoinvent/3.12/flow/954f7083-c85d-428f-af32-177be2e25ac9",
"skos:prefLabel": "Technetium-99m",
"context": "water / ground-",
"qudt:hasUnit": {
"@id": "https://vocab.brightway.one/units/unit/KiloBQ"
},
"skos:exactMatch": {
"@id": "https://vocab.brightway.dev/elementary-flows/aa28eafd8341dfb6cfa912584037a7b562666b0a"
}
},
"xkos:targetConcept": {
"@id": "https://vocab.brightway.dev/elementary-flows/aa28eafd8341dfb6cfa912584037a7b562666b0a"
},
"provenance": {
"prov:wasGeneratedBy": "merge_ecoinvent",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"ecoinvent:3.12:954f7083-c85d-428f-af32-177be2e25ac9",
"Technetium-99m",
""
],
"prov:wasDerivedFrom": "randonneur_replace_table:prepared_mapping"
}
},
{
"@type": "xkos:ConceptAssociation",
"xkos:sourceConcept": {
"@id": "https://vocab.brightway.one/ecoinvent/3.8/flow/954f7083-c85d-428f-af32-177be2e25ac9",
"skos:prefLabel": "Technetium-99m",
"context": "water / ground-",
"qudt:hasUnit": {
"@id": "https://vocab.brightway.one/units/unit/KiloBQ"
},
"skos:exactMatch": {
"@id": "https://vocab.brightway.dev/elementary-flows/aa28eafd8341dfb6cfa912584037a7b562666b0a"
}
},
"xkos:targetConcept": {
"@id": "https://vocab.brightway.dev/elementary-flows/aa28eafd8341dfb6cfa912584037a7b562666b0a"
},
"provenance": {
"prov:wasGeneratedBy": "merge_ecoinvent",
"prov:wasAttributedTo": "consensus-flow-list",
"prov:hadPrimarySource": [
"ecoinvent:3.8:954f7083-c85d-428f-af32-177be2e25ac9",
"Technetium-99m",
""
],
"prov:wasDerivedFrom": "randonneur_replace_table:prepared_mapping"
}
}
],
"_sources": {},
"cas_match_labels": {},
"general_comment": "",
"_transformed": false,
"_provided": {
"name": null,
"synonyms": [],
"context": [],
"cas_numbers": [],
"ec_numbers": [],
"unit": null
},
"elementary_flow_id": "aa28eafd8341dfb6cfa912584037a7b562666b0a"
}
Something wrong here?
A flow can be wrong in three ways, and they are decided differently. Pick the one that matches what you are looking at.
- A row from my list should not reach this flow
- This flow is not that chemical
- The compartment or the unit is wrong
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