Browsing by Autor "Jochen Bundschuh"
Now showing 1 - 10 of 10
- Results Per Page
- Sort Options
Item type: Item , Arsenic and other trace elements in thermal springs and in cold waters from drinking water wells on the Bolivian Altiplano(Elsevier BV, 2015) Mauricio Ormachea; Prosun Bhattacharya; Ondra Šráček; Oswaldo Ramos Ramos; Jorge Quintanilla Aguirre; Jochen Bundschuh; Jyoti Prakash MaityItem type: Item , Arsenic in Latin America: A critical overview on the geochemistry of arsenic originating from geothermal features and volcanic emissions for solving its environmental consequences(Elsevier BV, 2019) Nury Morales-Simfors; Jochen Bundschuh; Indika Herath; Claudio Inguaggiato; Alberto Caselli; Joseline Tapia; Fredy Erlingtton Apaza Choquehuayta; M. A. Armienta; Mauricio Ormachea; Erouscilla P. JosephItem type: Item , Arsenic in volcanic geothermal fluids of Latin America(Elsevier BV, 2012) Dina L. López; Jochen Bundschuh; Peter Birkle; M. A. Armienta; Luis Cumbal; Ondra Šráček; Lorena Cornejo‐Ponce; Mauricio OrmacheaItem type: Item , Contrasting controls on hydrogeochemistry of arsenic-enriched groundwater in the homologous tectonic settings of Andean and Himalayan basin aquifers, Latin America and South Asia(Elsevier BV, 2019) Poulomee Coomar; Abhijit Mukherjee; Prosun Bhattacharya; Jochen Bundschuh; Swati Verma; Alan E. Fryar; Oswaldo Eduardo Ramos Ramos; Mauricio Ormachea; Saibal Gupta; Chandan MahantaItem type: Item , Geochemical processes controlling mobilization of arsenic and trace elements in shallow aquifers and surface waters in the Antequera and Poopó mining regions, Bolivian Altiplano(Elsevier BV, 2014) Oswaldo Eduardo Ramos Ramos; Tobías S. Rötting; Megan French; Ondra Šráček; Jochen Bundschuh; Jorge Quintanilla; Prosun BhattacharyaItem type: Item , Geochemistry of naturally occurring arsenic in groundwater and surface-water in the southern part of the Poopó Lake basin, Bolivian Altiplano(Elsevier BV, 2016) Mauricio Ormachea; J. L. García-Aróstegui; Prosun Bhattacharya; Ondra Šráček; María Eugenia García Moreno; Claus Kohfahl; Jorge Quintanilla Aguirre; Jorge Hornero Diaz; Jochen BundschuhItem type: Item , Geogenic arsenic and other trace elements in the shallow hydrogeologic system of Southern Poopó Basin, Bolivian Altiplano(Elsevier BV, 2013) Mauricio Ormachea; Hannes Wern; Fredrick Johnsson; Prosun Bhattacharya; Ondra Šráček; Roger Thunvik; Jorge Quintanilla; Jochen BundschuhItem type: Item , HEAVY METALS IN AQUATIC PLANTS AND THEIR RELATIONSHIP TO CONCENTRATIONS IN SURFACE WATER, GROUNDWATER AND SEDIMENTS - A CASE STUDY OF POOPÓ BASIN, BOLIVIA(Lund University, 2005) M.E. García; Jochen Bundschuh; Oswaldo Eduardo Ramos Ramos; J. Quinatanilla; Kenneth M. Persson; Lars Bengtsson; Ronny Berndtsson"The uptake of the heavy metals Cd, Zn, Pb, As, and Fe by aquatic plants — thereby entering the human food chain — was studied in the Poopó basin, located in the semiarid, central Andean highland of Bolivia. At twenty sites around Poopó and Uru-Uru lakes, samples of aquatic plants, sediments, surface water and groundwater were taken. The spatial distribution of heavy metals indicate that most of the Cd and Pb influx into the semiarid Poopó basin results from mining activities and subordinate from geothermal activities, which are both located in the NE of Poopó basin. Also, arsenic concentrations are of similar magnitudes, released from mining activities and natural weathering of As-bearing rocks and predominantly observed in the W, SE, and S of Poopó basin. In the aquatic plants, concentrations of Cd, Zn, Pb and As were found in the ranges 0.0–45.0, 0–197, 0–858, and 83–943 mg/kg, respectively. The heavy metal concentrations found in aqueous plants are correlated to varying extents to the corresponding heavy metal concentrations in sediments, surface water and groundwater. High Cd and Pb concentration in aquatic plants sampled within Poopó Lake (15–23 and 858–936 mg/kg, respectively) correlate strongly with high Cd and Pb concentrations of its alkaline water (1.37–1.51 and 0.36–0.38 mg/L, respectively) as well as with high Cd and Pb concentrations in the lake sediments (20–25 and 210–260 mg/kg, respectively). However, at other sampling sites of the basin this correlation of Cd does not always exist. For As and Zn, no correlation could be found between the respective concentrations in aquatic plants, sediments, surface water and groundwater. There is no correlation between Cd, Zn, and Pb concentrations in surface water and groundwater. This shows that these heavy metals are predominantly fixed in the sediments and taken up by plants and/or transported as sediment load to Poopó Lake (Cd, Zn, and Pb cations are only stable in larger amounts under acidic conditions, e.g. in the acidic rivers influenced by mining activities, and nearby groundwater bodies, which are found in the NE of Poopó basin). In contrast the anions of arsenic are more soluble in surface water and groundwater with a neutral or slightly alkaline pH."Item type: Item , Sources and behavior of arsenic and trace elements in groundwater and surface water in the Poopó Lake Basin, Bolivian Altiplano(Springer Science+Business Media, 2011) Oswaldo Eduardo Ramos Ramos; Luis Fernando Cáceres; Mauricio Ormachea; Prosun Bhattacharya; Israel Quino; Jorge Quintanilla; Ondra Šráček; Roger Thunvik; Jochen Bundschuh; M.E. GarcíaItem type: Item , Use of low-enthalpy and waste geothermal energy sources to solve arsenic problems in freshwater production in selected regions of Latin America using a process membrane distillation – Research into model solutions(Elsevier BV, 2020) Barbara Tomaszewska; Jochen Bundschuh; Leszek Pająk; Marta Dendys; Valeria Delgado Quezada; Michał Bodzek; M. A. Armienta; Mauricio Ormachea; A. Kasztelewicz