{"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":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0005574841,0.0005375855,0.0004223744,0.001110806,0.0003954255,0.0004504455,0.0003139722,0.000587604,0.0005921171],"category_scores_gemma":[0.001041362,0.0003145567,0.0002050663,0.0004663714,0.0003585621,0.0003576131,0.0002613789,0.0003654304,0.0004400876],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002715937,"about_ca_system_score_gemma":0.0005172727,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0007584322,"about_ca_topic_score_gemma":0.001887503,"domain_scores_codex":[0.9993332,0.0001436637,0.00004410557,0.00009360312,0.0003519941,0.0000334323],"domain_scores_gemma":[0.9995327,0.0001413928,0.00006075377,0.00003014577,0.0001713581,0.0000636404],"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":[0.000175456,0.00008832898,0.002774179,0.00007574468,0.00003068492,0.00007387006,0.00004001023,0.00009004929,0.9817361,0.00008437844,0.00008486061,0.01474649],"study_design_scores_gemma":[0.00007772868,0.00122419,0.02363324,0.00004218984,0.000075038,0.001472627,0.00008249671,0.003301671,0.9651018,0.0003860909,0.004563008,0.00003985675],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.950878,0.01216249,0.0327301,0.000301771,0.0001089314,0.0002335017,0.001128329,0.0003747394,0.00208207],"genre_scores_gemma":[0.8703976,0.009726315,0.1113848,0.0003016783,0.000134102,0.0004018226,0.001470448,0.00005260546,0.006130714],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.001110806,"threshold_uncertainty_score":0.002948284,"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."}}