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Resumen del producto

Kot, F., E., Shumilin, G.M., Rodríguez Figueroa & N., Mirlean (2009). Mercury dispersal to arroyo and coastal sediments from abandoned copper mine operations, El Boléo, Baja California. Bulletin of Environmental Contamination and Toxicology. 82(1): 20-25. DOI: 10.1007/s00128-008-9551-1.

Mercury dispersal to arroyo and coastal sediments from abandoned copper mine operations, El Boléo, Baja California

Fydor Kot, Evgueni Shumilin, Griselda Margarita Rodríguez Figueroa y Nicolai Mirlean

Evidence for mercury dispersal in an arid coastal region of central Baja California (Mexico) suggests that abandoned copper mining operations are a noticeable source of mercury in the environment. There is a generally elevated level of mercury in alluvium of arroyos throughout the mining district (0.14–0.18 mg kg-1). In the first several dozen meters surrounding two of the biggest mines, mercury levels range from 0.26 to 3.16 mg kg-1, forming a halo of anomalously high concentrations. The coastal marine sediments, particularly those close to the copper smelter in the town of Santa Rosal?´a, also display some mercury enrichment.

Palabras clave: Mercury halo; abandoned mines; el Boléo mining district; Coastal marine sediments

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