{"id":"W2017362010","doi":"10.1021/ac802341y","title":"Separation and Measurement of Pa, Th, and U Isotopes in Marine Sediments by Microwave-Assisted Digestion and Multiple Collector Inductively Coupled Plasma Mass Spectrometry","year":2009,"lang":"en","type":"article","venue":"Analytical Chemistry","topic":"Radioactive element chemistry and processing","field":"Chemistry","cited_by":27,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"University of British Columbia; Ministerio de Ciencia e Innovación; Institut Polaire Français Paul Emile Victor; Polar Knowledge Canada","keywords":"Chemistry; Inductively coupled plasma mass spectrometry; Aqua regia; Microwave digestion; Mass spectrometry; Inductively coupled plasma; Analytical Chemistry (journal); Chromatography; Digestion (alchemy); Microwave; Microwave oven; Detection limit; Plasma; Metal","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.0001942272,0.0002390744,0.0003392618,0.00003465803,0.00008283014,0.00005669584,0.00007404556,0.0001969559,0.0001026522],"category_scores_gemma":[0.0002073943,0.0002456774,0.00003048895,0.0002008989,0.0001344521,0.0001375768,0.00003825032,0.0002612397,2.251026e-7],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001657297,"about_ca_system_score_gemma":0.00004705163,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00001686128,"about_ca_topic_score_gemma":0.000003199453,"domain_scores_codex":[0.9986092,0.00001317134,0.0003712449,0.0004451389,0.0003143172,0.0002468773],"domain_scores_gemma":[0.9993834,0.00009075231,0.0001614359,0.0001321461,0.00009229438,0.000139907],"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":[0.000233485,0.0001734283,0.04344233,0.0003190581,0.00007320088,0.000005812995,0.00005390147,0.000002185261,0.9547379,0.00000262911,0.00006247618,0.0008936191],"study_design_scores_gemma":[0.00186238,0.00003783276,0.0132262,0.0001197565,0.00007517289,0.00002157664,0.0001366773,0.003980679,0.9801102,0.0001099192,0.00007279395,0.0002467652],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9955054,0.0002614692,0.00008069618,0.0002036695,0.000005577857,0.00007163788,0.00002218441,0.00001877169,0.003830578],"genre_scores_gemma":[0.998764,0.00008917969,0.000576733,0.00002440969,0.00004162877,0.000005150064,0.00007093533,0.00001105525,0.0004168967],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.03021613,"threshold_uncertainty_score":0.9999995,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01640037775026022,"score_gpt":0.2517839199302833,"score_spread":0.2353835421800231,"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."}}