Determination of Stable Mercury Isotopes by ICP/MS and Their Application in Environmental Studies
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Inductively coupled plasma mass spectrometry (ICP/MS) is a powerful tool for mercury determinations. Introducing mercury in form of gaseous species into a dry plasma greatly reduces memory effects, achieving absolute detection limits of less than 100 pg of Hg. The capability of ICP/MS to take advantage of speciated isotope dilution methods makes this technique suitable for very precise and accurate measurements. Equally important, multiple stable tracer experiments to study the fate of Hg species in the environment become possible. This novel concept allows the investigation of multiple transformation processes simultaneously. However, since isotope enrichments are often well below 100 %, a system of linear equations must be solved to exactly calculate individual isotope concentrations. This paper describes the necessary calculations and demonstrates how stable isotopes improve methylmercury measurements.
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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) | 0.000 | 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