Uptake of selenium by Ruppia maritima from microcosm sediments under controlled redox conditions
- Clemson Univ., Pendleton, SC (United States). Dept. of Environmental Toxicology/TIWET
Redox potential plays a vital role in the speciation, bioavailability, and toxicity of metals and metalloids in sediments. The authors previously reported the development of a unique system which drives and maintains the redox of microcosm sediments with electrical current. The effectiveness of the redox control system has been validated by dosing microcosm sediments with acid volatile sulfide (AVS) and exerting either reducing conditions to maintain AVS or oxidizing conditions to induce a significant loss of AVS. Uptake of selenite, selenite and seleno-methionine from microcosm sediments by the aquatic plant Ruppia maritima was determined under redox conditions appropriate for each selenium species. Selenate uptake was determined for oxidizing and neutral conditions, while selenite and seleno-methionine uptake was determined for neutral and reducing redox potentials.
- OSTI ID:
- 49591
- Report Number(s):
- CONF-9410273-; TRN: IM9523%%414
- Resource Relation:
- Conference: 15. annual meeting of the Society of Environmental Toxicology and Chemistry (SETAC), Denver, CO (United States), 30 Oct - 3 Nov 1994; Other Information: PBD: 1994; Related Information: Is Part Of Society of Environmental Toxicology and Chemistry 15th annual meeting: Abstract book. Ecological risk: Science, policy, law, and perception; PB: 286 p.
- Country of Publication:
- United States
- Language:
- English
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