{"id":"W2970663031","doi":"10.1016/j.envpol.2019.113129","title":"Atmospheric perfluoroalkyl acid occurrence and isomer profiles in Beijing, China","year":2019,"lang":"en","type":"article","venue":"Environmental Pollution","topic":"Per- and polyfluoroalkyl substances research","field":"Environmental Science","cited_by":35,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of Alberta","funders":"Fundamental Research Funds for the Central Universities; China Scholarship Council; Natural Sciences and Engineering Research Council of Canada; National Natural Science Foundation of China","keywords":"Perfluorooctane; Particulates; Environmental chemistry; Chemistry; Aerosol; Cascade impactor; Beijing; Environmental science; Sulfonate; Organic chemistry; China","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001917839,0.0003708489,0.0003162005,0.001147818,0.0006333713,0.0004197407,0.0003180599,0.0003163169,0.001023554],"category_scores_gemma":[0.0001656127,0.0002139987,0.0002608352,0.001467224,0.0002430087,0.0002523674,0.0003214767,0.0001779125,0.000200555],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001176277,"about_ca_system_score_gemma":0.0009286923,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.1001131,"about_ca_topic_score_gemma":0.1085102,"domain_scores_codex":[0.9998317,0.0000181692,0.00001847831,0.00004338204,0.00004989419,0.00003833775],"domain_scores_gemma":[0.9998401,0.00001475404,0.00003779023,0.00001053422,0.00004553358,0.00005124147],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0002646832,0.00005674228,0.9801907,0.00004045114,0.0001329141,0.0006143298,0.0005893877,0.000234826,0.01034745,0.00007404344,0.0002691916,0.007185274],"study_design_scores_gemma":[0.000003420877,0.00002404636,0.9989484,0.000001265413,0.00001752499,0.00008454452,0.0001989677,0.0001213496,0.0003414211,0.00001425153,0.0002419765,0.000002807988],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9988175,0.0001518982,0.00005797168,0.00002398003,0.000003510854,0.000005557138,0.0003966893,0.000005540363,0.0005374902],"genre_scores_gemma":[0.9984136,0.0001134635,0.00005386653,0.00001961673,0.000006544742,0.000007938996,0.0004236432,0.000001894061,0.0009593652],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1001131,"threshold_uncertainty_score":0.1990609,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.003958228874969853,"score_gpt":0.2061044368253404,"score_spread":0.2021462079503705,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}