|Statement||by D.J. MacDonald.|
|Series||[OFR -- 1-90], Open file report (United States. Bureau of Mines) -- 90-1.|
|Contributions||Reno Research Center (United States. Bureau of Mines)|
|The Physical Object|
Get this from a library! Volatilization of selenium from Astragalus plants irrigated with selenium-laden water. [D J MacDonald; Reno Research Center (United States. Bureau of . On the mechanism of selenium tolerance in selenium-accumulating plants: Purification and characterization of a specific selenocysteine methyltransferase from cultured cells of Astragalus bisulcatus. European Journal of Biochemistry, , –Cited by: Twenty‐five species of Astragalus have been characterized as Se hyperaccumulators (Shrift, ). Some species can accumulate up to % of shoot DW as Se from soils with 2–10 μg Se g −1 DW. This is – times more Se than adjacent non‐accumulating plants including other Astragalus species (Pickering et al., ; Shrift, ).Cited by: Release of volatile selenium compounds by two plant species, Astragalus racemosus (Pursh.), a selenium-accumulating plant, and alfalfa, Medicago .
The reduction in loads from East Mill Creek to Spring Creek (fig. 12, sites 17 and 18) suggests losses of selenium from the water column by mechanisms such as to plant . Acceleration of selenium volatilization in seleniferous agricultural drainage sediments amended with methionine and casein G.S. Ba~nuelos a,*, Z.-Q. Lin b a USDA-ARS, Water Management Research Laboratory, Parlier, CA , USA b Department of Biological Sciences & Environmental Sciences Program, Southern Illinois University Edwardsville, Edwardsville, IL . There was a slight increase of tissue selenium concentration with the addition of chloride salt concentration. Selenium Volatilization Plants irrigated with a nutrient solution supplemented with 1 mg liter' Se produced volatile Se of 65 lag g-' day'. The addition of mM Na2SO4 did not cause a reduction of volatile Se. Selenium (Se) removal from polluted waters and soils is especially complicated and highly expensive. Phytoremediation has been suggested as a low-cost, efficient technology for Se removal. Plants remove Se by uptake and accumulation in their tissues, and by volatilization into the atmosphere as a harmless gas. Unraveling the mechanisms of Se uptake and volatilization in plants .
Lin, Z. Q. & Terry, N. Selenium removal by constructed wetlands: quantitative importance of biological volatilization in the treatment of selenium-laden agricultural drainage water. Environ. Sci. Uptake, Metabolism, and Volatilization of Selenium by Terrestrial Plants Elizabeth A.H. Pilon-Smits, Gary S. Ban˜uelos, and David R. Parker Introduction Selenium (Se) in irrigation drainage water became a major concern after it was implicated in deaths and deformities of waterfowl at Kesterson Reservoir (Presser and Ohlendorf Leaf material from selenium accumulating plants was collected and analyzed for selenium to obtain a relative indication of selenium concentrations in soils and identify sites suitable for further soil study. Selenium concentrations of 14 samples of leaf material from Astragalus oxyphysus ranged from to microg/g dry weight and had a median concentration of . Natural background concentrations of selenium in nonvolcanic areas are only around –1 ng m −3, but the short residence time, usually a matter of weeks, makes the atmosphere a rapid transport route for selenium. Volatilization of selenium into the atmosphere results from microbial methylation of selenium from soil, plant, and water, and.