Diffusion and Equilibrium Adsorption Coefficients of Aromatic Hydrocarbon Species in Capillary Columns
Bibliographic record
Abstract
Abstract This study focuses on a mathematical description of elution of aromatic species in a 30 m×0.25 mm×0.25 μm BPX5 capillary column. Experimental studies involve the detection of chemical species at the capillary column outlet. Using the recorded peaks, statistical moments of different orders are calculated for both toluene and naphthalene. Modeling studies involve a laminar flow model with an equilibrium coefficient ( K s ) and a solute diffusion coefficient in the stationary phase ( D s ). Model validation is developed by performing experiments at different carrier gas velocities and GC oven temperatures. Under the conditions, neither the first statistical moment ( M 1 ) nor the second statistical moment ( M 2 ) is affected by the carrier gas velocity. Thus, the interface equilibrium coefficients ( K s ) and the diffusion coefficients ( D s ) solely depend on the solute and the capillary column polymer coating properties. Furthermore, the statistical moments of different orders show that the proposed interface equilibrium based model in the “narrow bore” 30 m×0.25 mm×0.25 μm BPX5 capillary column is adequate for aromatic species such as toluene and naphthalene.
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 | 0.000 | 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".