Heavy Metals in Surface Soils and Streambed Sediments in the Wallapai Mining District, Northwestern Arizona, a Historic Mining District in a Semiarid Region PDF Download
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Author: Ulrike Rösner
Publisher:
ISBN:
Category : River channels
Languages : en
Pages : 50
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Author: Ulrike Rösner
Publisher:
ISBN:
Category : River channels
Languages : en
Pages : 50
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 134
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Author:
Publisher:
ISBN:
Category : Water-supply
Languages : en
Pages : 468
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The primary objectives of the Atlas are to present an overview of water supply and demand conditions [as has not been available on a statewide basis for over ten years], to provide water resource information for planning and resource development purposes and to help identify the needs of communities throughout Arizona, particularly those outside the AMAs [the five active management areas].
Author: Calspan Corporation
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 126
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Author: Tanya G. Baker
Publisher:
ISBN:
Category : Soils
Languages : en
Pages : 142
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The Hanover Mining District, located east of Silver City in south west New Mexico, has been mined since at least the 1600's. The majority of production was for iron and base metals such as Cu, Zn, and Pb. The two sites of interest in this study are the Hanover and Bullfrog tailings piles. Tailings were produced from Zn-Pb sulfide-vein deposits. The main ore mineral at Hanover is sphalerite. Ankerite, specular hematite, pyrite, and pyrrhotite are common gangue minerals. The main ore minerals at Bullfrog (derived from three mines) are sphalerite and galena. Gangue minerals include quartz, pyrite, manganiferous calcite, chlorite, and rarely barite. Movement of heavy metals from the tailings piles may occur by wind transport of metal-containing particles, fluvial transport, aqueous transport, and/or plant uptake. To determine the mobility of heavy metals present at the sites, surrounding soils, vegetation, and surface water were sampled and analyzed. Soils were sampled at the surface and at depth to determine possible downward movement. Foliar samples were taken to determine metal concentrations in plants on and near the tailings. Surface water samples were taken from Hanover Creek above, adjacent to, and below the Hanover tailings to determine possible contamination from the tailings. Surface soil samples taken in an area affected by wind-transported tailings material show slightly elevated Pb, Zn, and Cu concentrations above background. Concentrations of these metals drop to background levels below 2-4 cm in depth. Plant samples show little uptake of heavy metals even in samples taken on the edge of the tailings piles where wind transported material had engulfed the plant. Water samples taken adjacent to and below the Hanover tailings contain fewer total dissolved solids and lesser concentrations of the main ions SO4, and Ca than those taken upstream of the tailings. This is probably due to the presence of calcium carbonate in the tailings material. These results, together with the alkaline nature of the soils and arid climate of the southwest United States, indicate the probability of dissolved aqueous transport of heavy metals away from the tailings is low. It is recommended that the tailings be covered with topsoil and revegetated to decrease any effects the tailings may have on the surrounding environment.
Author: Kenneth C. Ames
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 118
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Author:
Publisher:
ISBN:
Category : King County (Wash.)
Languages : en
Pages : 114
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Author: Irena Sherameti
Publisher: Springer Science & Business Media
ISBN: 364202436X
Category : Technology & Engineering
Languages : en
Pages : 492
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Human activities have dramatically changed the composition and organisation of soils. Industrial and urban wastes, agricultural application and also mining activities resulted in an increased concentration of heavy metals in soils. How plants and soil microorganisms cope with this situation and the sophisticated techniques developed for survival in contaminated soils is discussed in this volume. The topics presented include: the general role of heavy metals in biological soil systems; the relation of inorganic and organic pollutions; heavy metal, salt tolerance and combined effects with salinity; effects on abuscular mycorrhizal and on saprophytic soil fungi; heavy metal resistance by streptomycetes; trace element determination of environmental samples; the use of microbiological communities as indicators; phytostabilization of lead polluted sites by native plants; effects of soil earthworms on removal of heavy metals and the remediation of heavy metal contaminated tropical land.
Author: James Robert Lang
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 284
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Author: Elise M. P. Giddings
Publisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 42
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