Assessment of potential contamination and acid drainage generation in uranium mining zones of Peña Blanca, Chihuahua, Mexico

• Published in: Environmental monitoring and assessment Vol. 195; no. 3; p. 386
• Main Authors: Guzmán-Martínez, Fredy, Arranz-González, Julio-César, Tapia-Téllez, Alfredo, Prazeres, Cátia, García-Martínez, María-Jesús, Jiménez-Oyola, Samantha
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.03.2023; Springer Nature B.V
• Subjects: Acid mine drainage; Acidic wastes; Acids - analysis; Atmospheric Protection/Air Quality Control/Air Pollution; Contamination; Drainage; Earth and Environmental Science; Ecology; Ecotoxicology; Environment; Environmental liability; Environmental Management; Environmental monitoring; Environmental Monitoring - methods; Environmental science; Geology; Laboratories; Leaching; Liability; Lithology; Metals, Heavy - analysis; Mexico; Mine drainage; Mineralogy; Minerals; Mining; Monitoring/Environmental Analysis; Pollution; Sediment pollution; Soil; Soil - chemistry; Soil contamination; Soil Pollutants - analysis; Soil pollution; Spectrometry; Uranium; Uranium - analysis; Water pollution; X-ray diffraction; Mexico; Background levels; Environmental pollution; Index of contamination; Net acid generation; Potentially toxic elements
• ISSN: 0167-6369; 1573-2959
• DOI: 10.1007/s10661-023-10965-9

Potential pollution of mining environmental liabilities’ locations can be preliminarily and efficiently assessed by the potential generation of acid mine drainage and indices of contamination. This research evaluates the potential pollution by potentially toxic elements at locations with uranium mining liability evidence, using the net acid generation test and determining the background values to estimate acid mine drainage and indices of contamination. Sixty soil samples were collected, and the mineralogy and potentially toxic elements’ total contents were determined by x-ray diffraction and optical spectrometry. The findings suggest that the soils related to a specific lithology might not present potential acid mine drainage generation but potential soil and sediment contamination. Future research is recommended on applying leaching tests to identify which potentially toxic elements are effectively being solubilized. Finally, it can be concluded that the study area’s potential contamination is relatively low overall.