Selenium Distribution for Soils Derived from Mancos Shale in Gunnison and Uncompahgre River Basins, West-Central Colorado

@article{Elrashidi2018SeleniumDF,
  title={Selenium Distribution for Soils Derived from Mancos Shale in Gunnison and Uncompahgre River Basins, West-Central Colorado},
  author={Moustafa A. Elrashidi},
  journal={Communications in Soil Science and Plant Analysis},
  year={2018},
  volume={49},
  pages={1083 - 1091}
}
  • M. Elrashidi
  • Published 29 March 2018
  • Environmental Science
  • Communications in Soil Science and Plant Analysis
ABSTRACT Selenium (Se) is an essential micronutrient for humans and animals and can be toxic when present in high concentrations in soil and water. Many soils in Gunnison and Uncompahgre River Basins in West-Central Colorado are formed from deposits derived mainly from weathered Mancos shale that have high concentration of Se and salts. Elevated concentrations of Se and salts were detected in streams and rivers in this area. The objectives were to determine the amount and distribution of… 

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References

SHOWING 1-10 OF 38 REFERENCES

Selenium distribution in topsoils and plants of a semi-arid Mediterranean environment.

Selenium was determined from 25 topsoils and 25 plants in the semi-arid Central Spain where large extents of soils are developed on evaporitic materials. Some species of vegetation associated with

Detailed study of selenium in soil, representative plants, water, bottom sediment, and biota in the Kendrick Reclamation Project Area, Wyoming, 1988-90. Water Resources Investigation

In response to increasing concern about the quality of irrigation drainage and its potential effects on fish, wildlife, and human health, the U.S. Department of the Interior formed an interbureau

Concentrations and characteristics of selenium in soil samples from Dashan Region, a selenium-enriched area in China

Abstract In order to clarify the total selenium (Se) content and species of Se in the soils of Dashan Region, a typical Se-enriched area in China, 69 soil samples with different land-use purposes

Selenium in Hungary. The rock-soil-human system.

TLDR
It was concluded that Hungarian rock-soil systems, especially the acid igneous rocks and the widely distributed young sediments with most of the agricultural activity, are low in Se, and the mean serum Se level of the blood samples were also low.

Selenium Partitioning and Stable Isotope Ratios in Urban Topsoils

oxides. Th e δ82/76 Se values of total Se in the topsoils were close to the bulk Earth composition with an average δ82/76 Se value of −0.03 ± SD 0.38‰ suggesting that there was no or little Se

Selenium in Hungary

Selenium (Se) status of Hungarian rock-soil systems has been poorly investigated. The goal of this study was to get general information on the main features of Se geochemistry, and to have a brief

Bioaccumulation of selenium from natural geologic sources in western states and its potential consequences

Ecological impacts of water-quality problems have developed in the western United States resulting from the disposal of seleniferous agricultural wastewater in wetland areas. Overt effects of

Selenium retention in the organic matter of Swedish forest soils

SUMMARY Fractions of selenium present in the soil profiles of three Swedish podzols were analysed using a sequential extraction scheme to characterize Se distribution among the organic and

Microbial Transformations of Selenium and the Bioremediation of Seleniferous Environments

TLDR
A major emphasis is placed on Se reduction and methylation/volatilization reactions because these processes are currently the most promising for transformation of toxic Se oxyanions into less toxic or biologically unavailable forms.

Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the Gunnison and Uncompahgre River basins and at Sweitzer Lake, west-central Colorado, 1988-89

During the last several years, there has been increasing concern about the quality of irrigation drainage and its potential harmful effects on human health, fish, and wildlife. This report describes