Extraction Equilibrium and Simple Extractive Spectrophotometric Determination of Gold (I& III) in Water Using the Ion - Pairing Amiloride Hydrochloride
Bibliographic record
Abstract
The chemical equilibrium of the ternary complex ion associate of the complex anion AuCl4- and the ion – pairingreagent 1- (3, 5-diamino-6-chloropyrazinecarboxyl) guanidine hydrochloride monohydrate, DPG+.Cl- extractedfrom aqueous solutions of pH 5-6 onto 4-methyl pentan-2-one was demonstrated. The extraction constants (Kex,KD and ß) of the chemical equilibrium and the structure of the produced associate were determined. The resultshave indicated that, the formation of the complex ion associate of the chemical structure DPG+.AuCl4- and theextraction mechanism does not involve solvation of the ion associate by the amine and/or water molecules in theorganic phase. Beer's law was obeyed in the range 0.01 -2.5 ?g mL-1gold (III) in the aqueous solution. Themethod was applied successfully for the analysis of gold (I) after oxidation to gold (III). The method was alsoapplied for the analysis of gold (I& III) at trace concentrations in industrial wastewater samples. Gold (III) ionsat trace level in one liter aqueous solution was concentrated in 10.0 mL by the developed extraction system so anenrichment factor of 100 was achieved. The time taken for the separation and determination of gold ions was inthe range of 3-5 min.
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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 | 0.001 |
| 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 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".