{"id":"W2032866325","doi":"10.1016/s1044-0305(03)00143-0","title":"Direct determination of polycyclic aromatic hydrocarbons in solid matrices using laser desorption/laser photoionization ion trap mass spectrometry","year":2003,"lang":"en","type":"article","venue":"Journal of the American Society for Mass Spectrometry","topic":"Mass Spectrometry Techniques and Applications","field":"Chemistry","cited_by":19,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of British Columbia","funders":"","keywords":"Chemistry; Mass spectrometry; Analytical Chemistry (journal); Ion trap; Photoionization; Laser; Quadrupole ion trap; Desorption; Ion; Sample preparation; Ionization; Chromatography; Adsorption; Optics; Organic chemistry","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":[0.0005143821,0.0009900889,0.0006638514,0.001087525,0.0006086056,0.0009431626,0.0005026823,0.0006469471,0.000970428],"category_scores_gemma":[0.0008879246,0.0004826808,0.0002798762,0.0007499108,0.0007189661,0.0006449826,0.0005508764,0.0009125185,0.0008339281],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003909652,"about_ca_system_score_gemma":0.0008753664,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001384408,"about_ca_topic_score_gemma":0.005863748,"domain_scores_codex":[0.9991478,0.0001091001,0.00004122926,0.0002271023,0.0004248972,0.00004995311],"domain_scores_gemma":[0.9994784,0.0001600475,0.00009339664,0.00005054946,0.0001632107,0.00005440224],"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":[0.00003857562,0.00001749023,0.0003106515,0.0000484783,0.00000838188,0.00002099233,0.00001017537,0.00005941192,0.9956955,0.00003255393,0.00001927317,0.003738541],"study_design_scores_gemma":[0.00002254949,0.0004547082,0.003623788,0.00001695311,0.00003156433,0.0003128755,0.00004793435,0.002064391,0.9909477,0.0001702092,0.002282402,0.00002501501],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.7563196,0.01100089,0.2209714,0.0003014348,0.000156496,0.0008245668,0.003938013,0.001363266,0.00512437],"genre_scores_gemma":[0.5698069,0.01181252,0.4086937,0.0002582535,0.0001213364,0.0005045395,0.002742698,0.0001426239,0.005917365],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.001384408,"threshold_uncertainty_score":0.003246367,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0127993241812536,"score_gpt":0.2760129549901502,"score_spread":0.2632136308088965,"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."}}