GSD-1G and MPI-DING Reference Glasses for In Situ and Bulk Isotopic Determination
Bibliographic record
Abstract
This paper contains the results of an extensive isotopic study of United States Geological Survey GSD-1G and MPI-DING reference glasses. Thirteen different laboratories were involved using high-precision bulk (TIMS, MC-ICP-MS) and microanalytical (LA-MC-ICP-MS, LA-ICP-MS) techniques. Detailed studies were performed to demonstrate the large-scale and small-scale homogeneity of the reference glasses. Together with previously published isotopic data from ten other laboratories, preliminary reference and information values as well as their uncertainties at the 95% confidence level were determined for H, O, Li, B, Si, Ca, Sr, Nd, Hf, Pb, Th and U isotopes using the recommendations of the International Association of Geoanalysts for certification of reference materials. Our results indicate that GSD-1G and the MPI-DING glasses are suitable reference materials for microanalytical and bulk analytical purposes. Ce document contient les résultats d’une importante étude isotopique des verres de référence USGS GSD-1G et MPI-DING. Treize laboratoires différents ont participé au travers de techniques analytiques de haute précision travaillant soit sur échantillon total (TIMS, MC-ICP-MS) soit par microanalyse «in situ» (LA-MC-ICP-MS, LA-ICP-MS). Des études détaillées ont été réalisées pour démontrer l’homogénéité aussi bien à grande qu’à petite échelle des verres de référence. Grace aux résultats de cette étude auxquels ont été ajoutés les données isotopiques déjà publiées de dix autres laboratoires, des valeurs de référence et des informations préliminaires ainsi que les incertitudes associées à un niveau de confiance de 95% ont été déterminées pour les isotopes de H, O, Li, B, Si, Ca, Sr, Nd, Hf, Pb, Th et U et ceci en utilisant les recommandations de l’Association internationale des géoanalystes (IAG) pour la certification de matériaux de référence. Nos résultats indiquent que les verres GSD-1G et MPI-DING sont des matériaux de référence appropriés pour la microanalyse et pour l’analyse sur échantillon total.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".