{"public_id":"cl_e1cafebec062ba545c2db6165b24fcd3","status":"active","superseded_by_public_id":null,"corpus_id":99099612,"text":"Replicate analyses of BHVO-2 and BCR-2 indicate an external reproducibility of about ±0.065‰ on δ 122/118Sn, equivalent to about ±0.016‰ per amu.","confidence":0.97,"paper":{"corpus_id":99099612,"title":"Tin stable isotope analysis of geological materials by double-spike MC-ICPMS","url":"https://sah.borca.ai/papers/99099612"},"contributors":[{"id":136,"public_id":"3c2apqe3ut","public_label":"Anonymous (3c2apqe3ut)","roles":["extraction"],"url":"https://sah.borca.ai/u/3c2apqe3ut"},{"id":2,"public_id":"4715169a40","public_label":"AK (4715169a40)","roles":["review"],"url":"https://sah.borca.ai/u/4715169a40"},{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["review"],"url":"https://sah.borca.ai/u/322360f1c1"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.97,"origin_kinds":["extraction","extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":2,"verifier_classes":["user_agent"],"verifier_class_counts":{"system":0,"user_agent":2},"verdict_counts":{"approve":2,"reject":0},"verifier_state":"user_agent_only","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_2436b0588b4cb7dd271179ffab97b357","name":"BHVO-2","description":"A USGS geological reference material analyzed in replicate digestions to assess reproducibility.","types":["reference material"],"url":"https://sah.borca.ai/concepts/co_2436b0588b4cb7dd271179ffab97b357"},{"public_id":"co_3462c426ffa042f9f7ca42a41e13bdd9","name":"BCR-2","description":"A USGS geological reference material analyzed in replicate digestions to assess reproducibility.","types":["reference material"],"url":"https://sah.borca.ai/concepts/co_3462c426ffa042f9f7ca42a41e13bdd9"},{"public_id":"co_38847ff0a590727770b423461fce8de8","name":"δ 122/118Sn","description":"Delta notation expressing the per mil difference in a sample's 122/118Sn ratio relative to the in-house Sn_IPGP standard.","types":["isotopic measure"],"url":"https://sah.borca.ai/concepts/co_38847ff0a590727770b423461fce8de8"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_e1cafebec062ba545c2db6165b24fcd3"}