Distribution features of PCBs in sediments of the Grand Canal (SuQian--YangZhou )
Why this work is in the frame
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Bibliographic record
Abstract
In order to ensure the water quality of the South-to-North Water Transfer Project and study the pollution features of Polychlorinated Biphenyls(PCBs),this study adopts the GC-ECD Method to carry a search of a quantitative analysis measurement of 12 kinds of homologues of PCBs out of surface sediments from 8 sections in the SuQian to YangZhou Section of the Grand Canal.It is indicated that the concentration of the PCBs is between 3.00 ng/g to 81.81ng/g,and the mean value is 40.01ng/g.The average content of PCBs in surface sediments between SuQian to YangZhou Section is higher than those contents of PCBs in some Chinese rivers,such as the Yellow River and the Yangtze River.Among the contents,the PCBs in SuQian Section is obviously higher than that in the downstream of HuanAn and YangZhou Sections.By adopting the SQG evaluation method which is issued by Canadian Environment Committee and the ecological hazard index method,the author carries a preliminary risk evaluation and both of the two methods indicate that the PCBs in the surface sediments of the Grand Canal(SuQian to YangZhou) has an obvious inclination of ecological risk.
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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) | 0.000 | 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 it