{"id":"W2010114673","doi":"10.1016/j.chroma.2009.01.022","title":"Automated polyvinylidene difluoride hollow fiber liquid-phase microextraction of flunitrazepam in plasma and urine samples for gas chromatography/tandem mass spectrometry","year":2009,"lang":"en","type":"article","venue":"Journal of Chromatography A","topic":"Analytical chemistry methods development","field":"Chemistry","cited_by":69,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of Waterloo","funders":"","keywords":"Chromatography; Chemistry; Mass spectrometry; Sample preparation; Matrix (chemical analysis); Extraction (chemistry); Detection limit; Fiber; Gas chromatography–mass spectrometry; Analytical Chemistry (journal)","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"],"consensus_categories":[],"category_scores_codex":[0.0007409582,0.0004301714,0.001045695,0.0009650186,0.00008385058,0.00006059576,0.000343171,0.0003061088,0.0002635857],"category_scores_gemma":[0.0003186406,0.0004049485,0.0006413694,0.001119877,0.0001810164,0.0002844385,0.00003046008,0.0004695888,7.299857e-7],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001199499,"about_ca_system_score_gemma":0.0001462775,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.000009464859,"about_ca_topic_score_gemma":0.000002834005,"domain_scores_codex":[0.9968862,0.00005724742,0.001600973,0.0003656666,0.0005510157,0.0005389185],"domain_scores_gemma":[0.9974494,0.000532669,0.001110222,0.0003083127,0.0002674415,0.0003319728],"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":[0.001227027,0.0007402634,0.004339017,0.0003905424,0.0004668969,0.0001152637,0.00009432877,0.00001017712,0.9909282,0.00003909729,0.0002819246,0.00136722],"study_design_scores_gemma":[0.00608712,0.0007299567,0.008385138,0.0006551725,0.0002892124,0.0008029241,0.0001956702,0.000547979,0.9797896,0.001193064,0.0008791281,0.000445019],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9935048,0.00102892,0.00423716,0.0002368651,0.00006101535,0.0001473502,0.00005013701,0.00009896877,0.0006348265],"genre_scores_gemma":[0.8712369,0.0003933248,0.1280909,0.00003464859,0.0001456136,0.0000072074,0.00001835711,0.0000373911,0.00003572536],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1238537,"threshold_uncertainty_score":0.9998403,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0165327557584834,"score_gpt":0.2998541002759385,"score_spread":0.2833213445174551,"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."}}