Contents, Distribution and Correlation of Cd, Pb, Hg, As in Water, Sediment and Organsims from East Dongting Lake and Datong Lake
Why this work is in the frame
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Bibliographic record
Abstract
Samples of lake water, bottom sediment and organisms'muscles were obtained from East Dongting Lake and Datong Lake in November 2005, concentrations of Cd, Pb, Hg and As in water, bottom sediment and organisms were analyzed.Results showed that most samples'concentrations of Cd, Pb, Hg and As in lake water were lower than the values of classⅠof Chinese surface fresh water quality standards, and average concentrations of Cd, Pb, Hg in lake water were lower than environmental background concentrations of Dongting Lake water, however average concentrations of As in lake water were higher than that.Average concentrations of Cd, Pb, Hg and As in sediments were higher than environmental background concentrations of Dongting lake sediments, and concentrations of Cd, Pb, Hg and As in LuJiao and YueYang Port were higher than other samples sites and the values of fresh water sediment standards in USA and Canada, and is probably dangerous to other organisms in water and sediments or to humans feed on the organisms.There were different concentrations of cadmium, lead, mercury and arsenic in different fish species, i.e.concentrations of Cd, Pb, Hg and As in demersal fish species were higher than that in pelagic fish species, and concentrations of Cd, Pb, Hg and As in piscivorous fish species were higher than that in herbivorous fish species.Concentrations of Cd, Pb, Hg and As in Bellamya quadrata from east shore of East Dongting Lake are higher than that from west shore of East Dongting Lake, and concentrations of Cd, Pb, Hg and As in the place of LuJiao and Yueyang Harbor is the highest.Concentrations of Cd, Pb, Hg and As in fish species and Bellamya quadrata were all lower than the values of nonpollution aquatic products, fish and Bellamya quadrata in East Dongting Lake and Datong Lake were all safe foods.
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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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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