Enhanced Uptake of PAHs by Organic-Coated Aqueous Surfaces
Bibliographic record
Abstract
We report direct laser-induced fluorescence measurements of the uptake of the polycyclic aromatic hydrocarbons (PAHs) anthracene and pyrene to the air−aqueous interface for pure water and for water coated with an organic film. The surface uptake coefficients of anthracene and pyrene to the air−water interface are estimated to be on the order of 10 -5 . For both PAHs, the surface uptake coefficients for uptake to a 1-octanol-coated water surface increase by a factor of 2−3 over those determined for the pure water surface. The surface uptake of pyrene to a hexanoic-acid-coated interface does not display this enhancement, though there is a small enhancement of its equilibrium partitioning to hexanoic-acid-coated surfaces. Resolved fluorescence spectra of pyrene adsorbed onto 1-octanol-coated surfaces indicate that pyrene is in a less polar environment there than when adsorbed at hexanoic-acid-coated interfaces.
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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) | 0.000 | 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".