Organic contaminant sorption in Triassic sandstone deposits, Birmingham, UK
Bibliographic record
Abstract
Sorption of the organic contaminant PCE (perchloroethene) is currently being studied in the Birmingham Triassic sandstone aquifer, UK, an example of a low f oc (fraction of organic carbon) aquifer. The research aims to evaluate the degree of spatial variability of sorption in the aquifer and identify correlations with other aquifer parameters. PCE sorption has been shown to be nonlinear with Freundlich partition coefficients in the range 0.17-1.32 and retardation factors 1.7-9.0 (most samples <5). Sorption varies heterogeneously between the various sandstone and mudstone lithologies present. There is evidence of increased sorption with increasing sample f oc suggesting dominance of the, albeit low f oc as the sorbing phase. In spite of the aquifer's quite different geological origins, sorption parameters compare favourably with those of the Borden site (Canada), which has a similarly low f oc .
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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 | 0.000 | 0.000 |
| 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) | 0.007 | 0.001 |
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; both teacher heads agree on what is shown here.
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".