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Record W2051776990 · doi:10.1021/es990507d

Radiolytic Organic Iodide Formation under Nuclear Reactor Accident Conditions

2000· article· en· W2051776990 on OpenAlex

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.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueEnvironmental Science & Technology · 2000
Typearticle
Languageen
FieldChemistry
TopicRadioactive element chemistry and processing
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsChemistryAlkylIodideHalideIodineVolatilisationGas chromatographyRadiolysisEnvironmental chemistryRadiochemistryOrganic chemistryNuclear chemistryChromatographyRadical

Abstract

fetched live from OpenAlex

The radiological and environmental impacts of serious nuclear reactor accidents are governed to a large extent by the release of airborne radioiodine to the environment. The post-accident volatilization of radioiodine can be significantly affected by organic impurities present in a reactor containment structure. In this research, the impact of organic compounds on iodine behavior was investigated under chemical conditions representative of those expected post-accident in a reactor containment structure. Gas chromatography, mass spectrometry, and UV spectrophotometry were used to analyze the gas and liquid phases of irradiated iodide solutions containing various alkyl halide, carbonyl, and aromatic compounds; the three classes of organic molecules most likely present in containment. Chloro-iodo organics and alkyl iodides were the major types of volatile iodo-organics formed in the presence of alkyl chlorides and carbonyls, respectively, while no volatile iodo-organics were formed in the presence of aromatics. The originally present I - formed small amounts of I 2 in the presence of ionizing radiation. The quasi-steady-state I 2 concentration increased in the presence of alkyl chlorides and decreased in the presence of carbonyls and aromatics. These results indicate that using materials, such as paints, containing aromatics as opposed to alkyl halides and carbonyl compounds will provide a passive means to reduce iodine releases following reactor accidents.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.030
Threshold uncertainty score0.971

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0010.001
Scholarly communication0.0000.001
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0300.001

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.

Opus teacher head0.006
GPT teacher head0.216
Teacher spread0.210 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it