{"id":"W2204837489","doi":"10.3791/53416","title":"Measurement of H<sub>2</sub>S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection","year":2015,"lang":"en","type":"article","venue":"Journal of Visualized Experiments","topic":"Analytical Chemistry and Chromatography","field":"Chemistry","cited_by":11,"is_retracted":false,"has_abstract":true,"ca_institutions":"Natural Resources Canada","funders":"Natural Sciences and Engineering Research Council of Canada; Government of Canada","keywords":"Hydrogen sulfide; Sulfur; Chromatography; Gas chromatography; Chemistry; Sulfide; Hydrogen; Chemiluminescence; Analytical Chemistry (journal); Organic chemistry","routes":{"ca_aff":true,"ca_fund":true,"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":[0.0008030569,0.0004271803,0.0008102467,0.0003382406,0.000152795,0.00006025313,0.0001706242,0.0002648159,0.0000195765],"category_scores_gemma":[0.0001988014,0.0004057838,0.0002695428,0.000435891,0.000180565,0.0003409524,0.0001165902,0.0004366198,7.023454e-7],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003414128,"about_ca_system_score_gemma":0.0001744236,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00006740019,"about_ca_topic_score_gemma":0.00002997204,"domain_scores_codex":[0.9966791,0.0001123817,0.001084791,0.0004138916,0.001242151,0.0004677349],"domain_scores_gemma":[0.997834,0.0000812093,0.0008198666,0.0002107792,0.0005533373,0.0005007766],"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":[0.0009186123,0.0006301666,0.004509291,0.0002358588,0.0003977829,0.00005089527,0.001127053,0.00003353579,0.991163,0.00002244412,0.00002524943,0.0008860822],"study_design_scores_gemma":[0.005788122,0.0001824703,0.0005739873,0.001071533,0.0001646904,0.0002995473,0.001242909,0.001100528,0.9889483,0.0001230032,0.0001271706,0.000377774],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9924532,0.006363234,0.0004120682,0.0000297311,0.00009504842,0.00003315274,0.000005200087,0.00002499784,0.0005834142],"genre_scores_gemma":[0.9979392,0.0005090288,0.001329913,0.00002521683,0.00012738,0.000007257191,0.00000224555,0.00004623501,0.00001352601],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.005854205,"threshold_uncertainty_score":0.9998394,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.03216034661655183,"score_gpt":0.3385556808637545,"score_spread":0.3063953342472027,"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."}}