title: Natural contamination with arsenic and other trace elements in ground waters of Argentine Pampean Plain.
abstract: Natural contamination with arsenic and other toxic trace elements was studied on a 50,000 km(2) area of the Pampean Plain in Argentina. The locations where natural sources of arsenic are considered to be of concern continue to grow, and include those associated with soils developed on loess or loessic sediments zones and transported volcanic materials sites. Contents of total arsenic, vanadium, chromium, iron and barium higher than those recommended as maximum allowable levels in drinking waters have been measured. In the case of arsenic, analyses of raw groundwaters yielded levels as high as 600 microg As/l. Reported data are discussed in connection with geological and environmental processes involved in ground water contamination.
authors.affiliation: Unidad de Actividad Química, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Avenida del Libertador 8250 (1429), Buenos Aires, Argentina. farias@cnea.gov.ar
authors.forename: Silvia S
authors.initials: SS
authors.lastname: Farías
authors.forename: Victoria A
authors.initials: VA
authors.lastname: Casa
authors.forename: Cristina
authors.initials: C
authors.lastname: Vázquez
authors.forename: Luis
authors.initials: L
authors.lastname: Ferpozzi
authors.forename: Gladys N
authors.initials: GN
authors.lastname: Pucci
authors.forename: Isaac M
authors.initials: IM
authors.lastname: Cohen
mesh_terms: D001118:Argentina; D001151:Arsenic / Q000032:analysis*; D004784:Environmental Monitoring; D006801:Humans; D011634:Public Health; D012016:Reference Values; D018570:Risk Assessment; D012987:Soil; D014867:Water / Q000737:chemistry; D014881:Water Supply
chemical_list: D012987:Soil; D014867:Water; D001151:Arsenic