Search: L773:0969 806X OR L773:1879 0895 >
Radiolytic degradat...
Radiolytic degradation of dimethyl telluride in aqueous solutions
-
- Pasi, Anna-Elina, 1993 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Foreman, Mark, 1973 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Ekberg, Christian, 1967 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- English.
-
In: Radiation Physics and Chemistry. - : Elsevier BV. - 1879-0895 .- 0969-806X. ; 207
- Related links:
-
https://research.cha... (primary) (free)
-
show more...
-
https://doi.org/10.1...
-
https://research.cha...
-
show less...
Abstract
Subject headings
Close
- The formation of volatile radioactive species is a major concern in severe nuclear reactor accident scenarios. Release of radioactive material to the environment is highly governed by the volatility of the species and therefore it its crucial to understand the behavior of any such species during the accident and the days and weeks following. One of the volatile, yet highly understudied fission products is tellurium. Although tellurium has been released in significant amounts during the major nuclear accidents that have occurred, the knowledge of the behavior is still lacking. Here we present results on the radiolysis of dimethyl telluride, a highly volatile species shown to form in accident conditions. The behavior of dimethyl telluride was investigated under gamma irradiation in various aqueous solutions and conditions representative to severe nuclear reactor accident conditions. The results suggest that dimethyl telluride is relatively stable towards gamma irradiation and its degradation is highly affected by the amount of dissolved oxygen and competing species. It was found that dimethyl telluride degrades via oxidative processes by reacting with oxidizing radiolysis products e.g. •OH, O.-. In the absence of oxygen, several volatile telluride dimers were observed. The results presented here increase the interest in organic tellurides in severe accident conditions and highlight the need for further investigation of the re-volatilization and mitigation of volatile tellurium species.
Subject headings
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
Keyword
- Nuclear accident
- Tellurium
- Radiolysis
- Degradation
- Gamma irradiation
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database