Bioavailability and distribution of the familiar heavy metals around rhizosphere sediment of Suaeda heteroptera
Why this work is in the frame
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Bibliographic record
Abstract
The total contents of four familiar heavy metals (Cu, Zn, Pb and Cd )in rhizosphere sediment around Suaeda heteroptera were found in sequence ZnPbCuCd and varied remarkably on different tidelands. Those around rhizosphere were much higher than those outside rhizosphere. At mean tideland, they were higher than those either at low tideland or at high tideland. The chemical species of the heavy metals in rhizosphere sediment were investigated in 5 forms (the exchangeable, carbonate, Fe-Mn oxide, organic complex and residual), which showed both Cu and Pb were existed in residual form, then the carbonates and the least the exchangeable. On the contrary, Zn was in the order of the exchangeable, the carbonates, the residuals, carbonates, Fe-Mn oxides and organic complexes, respectively. Considering the bioavailability, the above mentioned 5 forms can be classified as two groups, the active group (involving the exchangeable, carbonate, Fe-Mn oxide and organic complex) and the residuals. The forms about the chemical alteration happened around the rhizosphere, the trend of Cu and Pb changing from the active form to the residuals was found, and which led to the bioavailability reduction. But Zn was in the reversed direction, that means its bioavailability to be increased.
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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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 it