Aqueous photolysis of the 8:2 fluorotelomer alcohol, and, The determination of the water solubility of N-ethylperfluorooctanesulfoneamidoethyl alcohol
Bibliographic record
Abstract
The 8:2 fluorotelomer alcohol (8:2 FTOH) was photodegraded in hydrogen peroxide solutions, Synthetic Field Water systems, and Lake Ontario water samples. It was found to undergo indirect photolysis, with the data suggesting that the hydroxyl radical was the main degradation agent. The half life of 8:2 FTOH was 0.83 ± 0.20 hours (10 mM H2O2), 38.0 ± 6.0 hours (100 μM H2O2), 30.5 ± 8.0 to 163.1 ± 3.0 hours (SFW systems), and 93.2 ± 10.0 hours (Lake Ontario). The main monitored products were the 8:2 fluorotelomer aldehyde, the 8:2 fluorotelomer acid and perfluorooctanoate; minor products were the 8:2 fluorotelomer unsaturated acid and perfluorononanoate. Determined by the column elution method, the water solubility for NEtFOSE was found to be: 119 ± 20 ug/L at 35°C, 99 ± 10 ug/L at 25°C, 71 ± 7 ug/L at 20°C, and 93 ± 20 ug/L at 15°C.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".