Bioaccumulation of Trivalent Chromium in the Aquatic Macrophytes Typha domingensis L. and Pontederia parviflora Alexander
Bibliographic record
Abstract
The phytoremediation employs the use of plants and is rapidly gaining interest due to effective and inexpensive cleanup of wastewater contaminated with metals, hydrocarbons, pesticides and chlorinated solvents. This study compares the performance of the Typha domingensis and Pontederia parviflora under similar conditions, in the absorption of trivalent chrome. The determination of the absorption capacity of the species was set in four tests of survival. The aquatic macrophytes were maintained in solution of 1.5L with concentration of trivalent chromium of 70mg.L. -1 for 72 hours. At the end of the experiment the concentration of chromium in T. domingensis was 85% and 60% in P. parviflora . The concentration of Cr in P. parviflora was high in shoots and high levels of Cr were found in roots of T. domingensis indicating that the plants have difficulties to translocate Cr from the roots to shoots. Thereby, our findings indicate P. parviflora for treatment of wastewater with high concentrations of chromium and T. domingensis has its use limited in this type of treatment.
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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) | 0.000 | 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 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".