{"id":"W1994150580","doi":"10.1021/es048635b","title":"Fluorotelomer Carboxylic Acids and PFOS in Rainwater from an Urban Center in Canada","year":2005,"lang":"en","type":"article","venue":"Environmental Science & Technology","topic":"Per- and polyfluoroalkyl substances research","field":"Environmental Science","cited_by":141,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Manitoba; Fisheries and Oceans Canada","funders":"","keywords":"Perfluorooctane; Rainwater harvesting; Extraction (chemistry); Chemistry; Environmental chemistry; Solid phase extraction; Carboxylic acid; Electrospray ionization; Chromatography; Sulfonate; Mass spectrometry; Organic chemistry; Biology; Ecology","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":true,"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":[0.0001026243,0.0003795379,0.0002454303,0.001017832,0.001894993,0.0005609256,0.000434228,0.0002119486,0.0005960682],"category_scores_gemma":[0.00023724,0.000209287,0.0001145725,0.001127475,0.0003765074,0.0001401753,0.0002232498,0.0002112507,0.0001062086],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.009802165,"about_ca_system_score_gemma":0.008571105,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.97429,"about_ca_topic_score_gemma":0.988201,"domain_scores_codex":[0.9997035,0.000008440142,0.00000717201,0.00005557727,0.000137873,0.00008744533],"domain_scores_gemma":[0.9998253,0.000007544697,0.000015515,0.000003752791,0.0001219953,0.00002590177],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0002980908,0.0001885475,0.8092164,0.0001732062,0.00008030031,0.001533462,0.003116272,0.00125205,0.1295,0.000305036,0.001390759,0.05294596],"study_design_scores_gemma":[0.00001769096,0.00007700928,0.9651699,0.00001480542,0.00003448712,0.0002844713,0.001852478,0.001484206,0.02643357,0.00005417861,0.004560759,0.00001656232],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9974297,0.0001981742,0.0004494901,0.00005149646,0.000003125651,0.0000439572,0.0006124928,0.00001936913,0.001192195],"genre_scores_gemma":[0.9940076,0.0004683295,0.001724937,0.00006634247,0.000004628578,0.00002309527,0.001289959,0.000009133724,0.002405996],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.02571005,"threshold_uncertainty_score":0.07112002,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.004359899871238053,"score_gpt":0.2114623617107534,"score_spread":0.2071024618395153,"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."}}