Determination of aluminum ion at ng mL -1 level in natural water using trimethoxyphenylfl uorone by light-absorption ratio varia- tion approach
Bibliographic record
Abstract
The complexation between trimethoxyphenylfl uorone (TMPF) and Al 3+ is sensitive at pH 10.98 in the presence of both cetyltrimethylammonium bromide (CTAB) and acetone. CTAB was used as a sensitizer to bind TMPF and acetone as a stabilizer to inhibit the oxidation of the TMPF-Al complex. The masking reagent, ethylenediaminetetraacetic acid (EDTA) is helpful to improve the selectivity of the complexation. The spectral correction technique was applied to characterize the Al-TMPF complex and the formation of Al (TMPF) 2 complex. The light-absorption ratio variation approach (LARVA) is used for quantitative detection of Al 3+ using complexation in a range from of 2 to 50 ng mL -1 of Al 3+ . The lightabsorption ratio difference in this range is linear. The limit of detection (3σ) of Al 3+ by the LARVA is only 2 ng mL -1 . Trace amounts of Al 3+ in natural water has been determined with satisfactory results.
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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 | 0.001 | 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".