Evolution of Volatile Selenium From Soils

Abu-Erreish, Ghaleb M.; Whitehead, E. I.; Olson, O. E.

doi:10.1097/00010694-196812000-00002

Cited by 73 publications

(37 citation statements)

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“…6). The increase of Se volatilization rates in soils that received C amendments was also reported in previous works (Abu-Erreish et al 1968;Frankenberger and Karlson 1989). In treatments without straw amendments, volatilization was only enhanced at the beginning of the experiment, probably due to moistening the soils, as suggested by Biggar and Jayaweera (1993).…”

Section: Selenium Volatilizedsupporting

confidence: 84%

“…Studies on the effects of organic matter and/or N on Se processes have mainly been focused on anoxic conditions Steinberg and Oremland 1990;Weres et al 1990), not resembling those conditions commonly found in agricultural situations and, thus, investigation in this area is needed. On the other hand, the addition of fresh organic matter to the soil might stimulate Se microbial methylation (Abu-Erreish et al 1968;Frankenberger and Karlson 1989). The toxicity of dimethylselenide is about three orders of magnitude less than that of aqueous selenite [Se(IV)] and selenate [Se(VI)] ions, and in situ Se biomethylation has been contemplated as a remediation alternative (Frankenberger and Karlson 1989).…”

Section: Mots Clésmentioning

confidence: 99%

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Effect of straw amendment and plant growth on selenium transfer in a laboratory soil-plant system

Arbestain¹

1998

Can. J. Soil. Sci.

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Camps Arbestain, M. 1998. Effect of straw amendment and plant growth on selenium transfer in a laboratory soil-plant system. Can. J. Soil Sci. 78: [187][188][189][190][191][192][193][194][195]. Knowledge of the transfers of selenium (Se) in the soil-plant-atmosphere environmental compartments is fundamental in assessing Se cycling through the environment. The purpose of this study was to determine the effects of straw amendments and barley (Hordeum vulgare L.) on Se cycling in soils from Kesterson Reservoir, Merced County, CA (0.68 mg soluble Se kg -1 , 6.15 mg total Se kg -1 ), and to evaluate the feasibility of these agricultural practices as bioremediation strategies. Four treatments were evaluated: soil only, soil + straw, soil + plant, and soil + straw + plant. Straw amendments greatly reduced Se from soil solution (92-97% of initial soluble Se). Selenate [Se(VI)] was the predominant species in soil solution. Phosphate-extractable Se did not account for the decline in soluble Se. Selenium volatilized by microbes represented only 4-5% of the soluble Se removed. Highest Se removal from soil solution and highest Se volatilization rates occurred when both microbial activity and growth were maximal. Selenate microbial reduction to more insoluble Se forms is indicated as being responsible for this removal. Plants did not account for as much Se removal from soil solution as did straw amendments. Total shoot Se corresponded to 1-9% of soluble Se removal. At the end of the experiment, Se in plants represented 0.1-0.7% of total Se in the system, and the Se volatilized accounted for 0.2 to 0.5% of total Se inventory. The results obtained in this study suggest the use of straw amendments as a remediation technique for managing Se contamination at Kesterson Reservoir. ce qui s'expliquait en partie par la réduction microbienne des sélénates en formes de Se plus insolubles. La mise en culture n'avait pas un rôle aussi important que l'incorporation de paille dans le sol pour la réduction des concentrations de Se dans la solution du sol. Le Se total contenu dans les parties aériennes de la culture équivalait à 1-9 % du retrait total de Se soluble. Au terme de l'expérience, le Se contenu dans la culture ne formait que 0,1 à 0,7 % du sélénium total présent dans le système sol-plante et le Se volatilisé 0,2 à 0,5 %. Il ressort de ces observations que l'incorporation de paille au sol s'annonce comme une technique efficace de maîtrise biologique des niveaux de Se dans le Kesterson Reservoir.

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Section: Selenium Volatilizedsupporting

confidence: 84%

Section: Mots Clésmentioning

confidence: 99%

Effect of straw amendment and plant growth on selenium transfer in a laboratory soil-plant system

Arbestain¹

1998

Can. J. Soil. Sci.

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“…The evolution of volatile Se from unamended-seleniferous or selenite- amended soils is directly related to the content of soluble Se (Abu-Erreish et al, 1968;Zieve and Peterson, 1981). Hamdy and Gissel-Nielsen (1976) concluded that the higher recoveries of volatile Se from a selenite-amended sand (8.1%), as compared with clay or organic soils (0.5-3%), resulted from less fixation of selenite in the sand.…”

Section: Soils Sediments and Sewagementioning

confidence: 99%

Microorganisms and the Biological Cycling of Selenium

Doran

1982

Advances in Microbial Ecology

181

100

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“…Volative Se compounds are naturally released into the atmosphere as a result of biological activity in aquatic (Chau et al, 1976) and terrestrial ecosystems (Abu-Erreish et al, 1968;Doran & Alexander, 1977). The pathways for Se volatilization in higher plants have been reviewed by Lewis (1976).…”

Section: Selenium Volatilitymentioning

confidence: 99%

Selenium in Seleniferous Environments

Mayland

James

Panter

et al. 2015

Selenium in Agriculture and the Environment

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Selenium is biologically important because (i) it is essential in animal and possibly plant metabolism, (ii) in many areas diets do not contain sufficient Se to meet, animals' needs, and (iii) in other areas it is toxic to animals when it occurrs in high concentrations in soil, water, plants, fly ash, or in aerosols. Animals require 0.05 to 0.1 mg Se/kg in their diets to prevent Se deficiency but suffer Se toxicosis when dietary levels exceed 5 to 15 mg Se/kg. The earth's crustal materials generally contain <0.1 mg Se/kg. Higher concentrations are found in Cretaceous shales. The Seaccumulator plants growing on the seleniferous soils may contain hundreds or even thousands of mg Se/kg. However, the nonaccumulator grasses and forbs seldom accumulate >50 mg Se/kg and more often contain <5 mg Se/kg. Soils and plants may discharge volatile forms of Se into the atmosphere. However, plants may also absorb measurable amounts of gaseous Se from the atmosphere. Anthropogenic activities impact the amount of Se entering our nation's lakes, rivers, and the atmosphere. Combustion of coal and incineration of municipal waste exhaust Se into the environment. In addition, crop-fallow and irrigation practices that allow leaching waters to pass through seleniferous strata prior to intersecting with surface flow, augment the Se levels encountered by plant and animal life.In 1857, U.S. Army Surgeon T.W. Madison described toxicity symptoms in horses (Equus caballus) grazing near Fort Randall, SD (Rosenfeld & Beath, 1964). Since then, ranchers in that area have continued to experience livestock losses. They associated the toxicosis with the saline seeps and outcrops, com-

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Evolution of Volatile Selenium From Soils

Cited by 73 publications

References 0 publications

Effect of straw amendment and plant growth on selenium transfer in a laboratory soil-plant system

Effect of straw amendment and plant growth on selenium transfer in a laboratory soil-plant system

Microorganisms and the Biological Cycling of Selenium

Selenium in Seleniferous Environments

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