{"id":"W2091795411","doi":"10.1021/ac011296+","title":"Quantitation of Amphetamine, Methamphetamine, and Their Methylenedioxy Derivatives in Urine by Solid-Phase Microextraction Coupled with Electrospray Ionization−High-Field Asymmetric Waveform Ion Mobility Spectrometry−Mass Spectrometry","year":2002,"lang":"en","type":"article","venue":"Analytical Chemistry","topic":"Mass Spectrometry Techniques and Applications","field":"Chemistry","cited_by":90,"is_retracted":false,"has_abstract":true,"ca_institutions":"National Research Council Canada","funders":"","keywords":"Chemistry; Chromatography; Ion-mobility spectrometry; Electrospray ionization; Mass spectrometry; Electrospray; Solid-phase microextraction; Detection limit; Analytical Chemistry (journal); Methylenedioxy; Solid phase extraction; Extractive electrospray ionization; Selected ion monitoring; Sample preparation in mass spectrometry; Gas chromatography–mass spectrometry","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow","insufficient_payload"],"consensus_categories":[],"category_scores_codex":[0.0003514611,0.0004785614,0.000773229,0.0003496587,0.0001097129,0.00006831437,0.0002983095,0.0003486276,0.002905005],"category_scores_gemma":[0.0005263704,0.0004143139,0.0001391517,0.002916363,0.0002107264,0.0002687562,0.00005863027,0.0006155621,0.000003275043],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003035917,"about_ca_system_score_gemma":0.00003677326,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0001376712,"about_ca_topic_score_gemma":0.00001289205,"domain_scores_codex":[0.9972934,0.00003214122,0.0008656525,0.000824427,0.0004312055,0.0005532145],"domain_scores_gemma":[0.9978397,0.0006242925,0.0004571703,0.0006446806,0.0002256473,0.0002085418],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0001092081,0.001341457,0.002916816,0.0003043579,0.0001522377,0.000004464729,0.00003684068,0.0000106986,0.992977,0.001162328,0.000129468,0.0008550715],"study_design_scores_gemma":[0.001513531,0.0003130769,0.0008906745,0.00005307277,0.00009880235,0.0000290431,0.0002205381,0.01888637,0.9762981,0.001135274,0.0001282235,0.0004332802],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9023304,0.0008093066,0.08958769,0.0004148426,0.000011162,0.000236409,0.00007670918,0.0001385332,0.006394928],"genre_scores_gemma":[0.9900303,0.0008680258,0.007991143,0.00003666395,0.00008893133,0.00006881896,0.0002674615,0.00005034302,0.0005982603],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.08769993,"threshold_uncertainty_score":0.9998308,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.009913235235073257,"score_gpt":0.2764545436557785,"score_spread":0.2665413084207053,"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."}}