Open AccessDissertation
Sources, Mobility and Bioavailability of Trace Metals and Metalloids in the Historically Mining and Smelter Impacted Altiplanean City of Oruro, Bolivia
Tapia Zamora,Joseline Soledad +1 more
TLDR
A collection of 91 sediment samples retrieved from ve sedimentary cores from Lake Uru Uru (Altiplano) and Cala Cala Lagoon (Eastern Cordillera) subjected to a total digestion technique, plus a compilation of preexistent data base of trace element concentration in soil and lacustrine sediment obtained from the Oruro Pilot Project (PPO) allowed to propose a geochemical background and a present-time baseline for As, Cd, Cu, Pb, Sb and Zn in sediments from this area as mentioned in this paper.Abstract:
Oruro, located on the Bolivian Altiplano, has been subjected to intense mining and smelting activities since Colonial times (XVIIth century), yet the current geochemical composition of sediments and trace element behaviour is practically unknown. A collection of 91 sediment samples retrieved from ve sedimentary cores from Lake Uru Uru (Altiplano) and Cala Cala Lagoon (Eastern Cordillera) subjected to a total digestion technique, plus a compilation of preexistent data base of trace element concentration in soil and lacustrine sediment obtained from the Oruro Pilot Project (PPO) allowed to propose a geochemical background and a present-time baseline for As, Cd, Cu, Pb, Sb and Zn in sediments from this area. Results obtained by statistics and geographical information system (GIS) analyses showed that the natural geochemical background of As and Sb is signi cantly enhanced in comparison to the Upper Continental Crust (UCC) concentration, world background levels, industrial sites and historical mining sites. The use of a local enrichment factor (EF) normalized by the mean concentrations of Cala Cala Lagoon (CCLAC), demonstrated that using UCC concentrations to calculate EFs (EFUCC) is inadequate for this highly mineralized environment and therefore is not supported. Regarding metals and metalloids, the strong multiplicity of sources in this environment makes it di cult to discriminate between natural and anthropogenic input into this endorheic drainage basin, although it is suggested that super cial soils are probably impactedread more
Citations
More filters
Economic implications of potential ENSO frequency and strength shifts (vol 49, pg 147, 2001)
C.C. Chen,B.A. McCarl,R.M. Adams +2 more
TL;DR: In this article, the authors examined the economic damages in the agricultural sector arising from a shift in El Niño Southern Oscillation (ENSO) event frequency and strength and found that annual damages in 3 to 4 hundred million U.S. dollar range are found if only the frequency of ENSO events changes.
Journal ArticleDOI
Evolution of Sedimentary Rocks [book review]
Journal Article
A global geochemical database for environmental and resource management : progress and problems of implementation : commentary
History of mining in the Lake Poopo region and environmental coHistory of mining in the Lake Poopo region and environmental consequences
TL;DR: Bolivia is a country with many mineral resources, located mainly in the Andean region of this country, where the lake Poopo is located as mentioned in this paper, and from thousands of years ago, the mining activity has a large importance; however, the natives used these resources formerly for ceremonial use and taking care with the environment.
Heavy metals in aquatic plants and their relationship to concentrations in surface water, groundwater and sediments — a case study of poopó basin, bolivia
TL;DR: In this paper, the uptake of the heavy metals Cd, Zn, Pb, As, and Fe by aquatic plants was studied in the Poopo basin, located in the semiarid, central Andean highland of Bolivia.
References
More filters
Journal ArticleDOI
Sequential extraction procedure for the speciation of particulate trace metals
TL;DR: In this paper, an analytical procedure involving sequential chemicai extractions was developed for the partitioning of particulate trace metals (Cd, Co, Cu, Ni, Pb, Zn, Fe, and Mn) into five fractions: exchangeable, bound to carbonates, binding to Fe-Mn oxides and bound to organic matter.
Journal ArticleDOI
A review of the source, behaviour and distribution of arsenic in natural waters
TL;DR: The scale of the problem in terms of population exposed to high As concentrations is greatest in the Bengal Basin with more than 40 million people drinking water containing ‘excessive’ As as mentioned in this paper.
Journal ArticleDOI
Early oxidation of organic matter in pelagic sediments of the eastern equatorial Atlantic: suboxic diagenesis
Philip N. Froelich,Gary P. Klinkhammer,Michael L. Bender,Nile A. Luedtke,G.R. Heath,Doug Cullen,Paul Dauphin,Doug Hammond,Blayne Hartman,Val Maynard +9 more
TL;DR: Pore water profiles of total CO 2, pH, PO 3−4, NO − 3 plus NO − 2, SO 2− 4, S 2−, Fe 2+ and Mn 2+ have been obtained in cores from pelagic sediments of the eastern equatorial Atlantic under waters of moderate to high productivity as mentioned in this paper.
Journal ArticleDOI
Dissimilatory Fe(III) and Mn(IV) reduction.
TL;DR: The physiological characteristics of Geobacter species appear to explain why they have consistently been found to be the predominant Fe(III)- and Mn(IV)-reducing microorganisms in a variety of sedimentary environments.