Utilization of 2-Nitro-6-(thiazol-2-yldiazenyl)phenol for Spectrophotometric Determination of Trace Amounts of Copper(II) in Water Samples
Bibliographic record
Abstract
A simple ultra sensitive and fairly selective non extractive spectrophotometric method for the determination of copper using 2-nitro-6-(thiazol-2-yldiazenyl) phenol (NTDP) has been developed.. The method is based on the color reaction of copper with NTDP at pH 7.1 buffer. The optimal reaction conditions (e.g., reagent concentration, pH and effect of time and temperature) were studied and the analytical characteristics of the method (e.g., limit of detection, limit of quantification, and linear ranges) were obtained. Linearity was obeyed in the range of 0.1-5.0 µg/mL of copper(II) ion and the detection limit of the method was 3.0 ng/mL. The relative standard deviation (RSD) and relative error for six replicate measurements of 2.0 µg/mL Cu(II) were 0.76 % and 1.34 %, respectively. The interference effect of some anions and cations was also tested. The method was applied to the determination of copper(II) in water samples.
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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 | 0.001 |
| 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".