Your browser doesn't support javascript.
loading
Elevated Radium Activity in a Hydrocarbon-Contaminated Aquifer.
Wiersma, Amy K; Hook, Glen; Mathews, Madeleine; Scott, Sean R; Meyer, Jessica R; Parker, Beth L; Ginder-Vogel, Matthew.
Afiliación
  • Wiersma AK; Environmental Chemistry and Technology Program, Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.
  • Hook G; School of Engineering, Morwick G360 Groundwater Research Institute, University of Guelph, Guelph, ON N1G 1Y6, Canada.
  • Mathews M; Institut de Physique du Globe de Paris, 1 Rue Jussieu, 75005 Paris, France.
  • Scott SR; Wisconsin State Laboratory of Hygiene, Madison, Wisconsin 53718, United States.
  • Meyer JR; Department of Earth and Environmental Sciences, University of Iowa, Iowa City, Iowa 52242, United States.
  • Parker BL; School of Engineering, Morwick G360 Groundwater Research Institute, University of Guelph, Guelph, ON N1G 1Y6, Canada.
  • Ginder-Vogel M; Environmental Chemistry and Technology Program, Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.
Environ Sci Technol ; 57(24): 8983-8993, 2023 06 20.
Article en En | MEDLINE | ID: mdl-37285386
Hydrocarbon spills that reach the subsurface can modify aquifer geochemical conditions. Biogeochemical zones typically form proximal to the source zone that include iron (Fe(III)) and manganese (Mn(III/IV)) (hydr)oxide reduction, with potential to release associated geogenic contaminants to groundwater. Here, multi-level monitoring systems are used to investigate radium (226Ra, 228Ra) activities in an aquifer contaminated with a mixture of chlorinated solvents, ketones, and aromatics occurring as a dense non-aqueous phase liquid in the source zone. 226Ra activities are up to 10 times higher than background 60 m downgradient from the source zone, where pH is lower, total dissolved solid concentrations are higher, and conditions are methanogenic. Correlations indicate that Fe and Mn (hydr)oxide reduction and sorption site competition are likely responsible for elevated Ra activities within the dissolved phase plume. 226Ra activities return to background within the Fe(III)/SO42--reducing zone 600 m downgradient from the source, near the middle of the dissolved phase plume. Geochemical models indicate that sorption to secondary phases (e.g., clays) is important in sequestering Ra within the plume. Although maximum Ra activities within the plume are well below the U.S. drinking water standard, elevated activities compared to background emphasize the importance of investigating Ra and other trace elements at hydrocarbon-impacted sites.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Agua Subterránea / Radio (Elemento) Idioma: En Revista: Environ Sci Technol Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Agua Subterránea / Radio (Elemento) Idioma: En Revista: Environ Sci Technol Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos