SMOG CHAMBER STUDY OF ACENAPHTHENE: GAS/PARTICLE PARTITION MEASUREMENTS OF THE PRODUCTS FORMED BY REACTION WITH THE OH RADICAL
Bibliographic record
Abstract
We studied the gas/particle partitioning of the products of the reaction of acenaphthene with the OH radical in a 10 m 3 smog chamber using multichannel, annular, diffusion denuders. The results showed that most of the products are predominantly in the particulate phase. Only four compounds, such as nitroacenaphthene, preferred the gas phase. We expect that the majority of the oxidation products would be adsorbed onto atmospheric particles. A comparison of solid-phase microextraction (SPME) and denuder sampling showed that the SPME syringe takes a representative sample of both gaseous and particulate phases and therefore cannot be used to determine the gas/particle partitioning ratios of the products. Another interesting result of this study showed that methanol cannot be used for sample extraction because this solvent reacts with some of the oxidation products of acenaphthene (probably the epoxide compounds) to produce artifacts that could lead to a misinterpretation of the actual atmospheric reactions.
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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) | 0.001 | 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 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".