title: Heavy metals in waters and suspended sediments affected by a mine tailing spill in the upper San Lorenzo River, Northwestern México.
abstract: Concentrations of arsenic (As), cadmium (Cd), copper (Cu), lead (Pb), mercury (Hg), silver (Ag) and zinc (Zn) were evaluated in water and suspended sediments of the upper waters of San Lorenzo River in NW Mexico following a mine tailing spill. Except As (6.64-35.9 µg L(-1)), dissolved metal concentrations were low (Ag <0.06-0.22; Cd 0.01-0.34; Cu 4.71-10.2; Hg 0.02-0.24; Pb <0.15-0.65; Zn 86-1,080 µg L(-1)) and were less than the upper limits established by UNEP (Water quality for ecosystem and human health, 2nd edn. United Nations Environment Programme Global Environment Monitoring System/Water Programme, Burlington, 2008), EPA (2014) and the Mexican regulation (NOM 1994). In contrast, the suspended metal concentrations were high (As 91.4-130; Ag 22.1-531; Cd 3.14-6.30; Cu 65-123; Hg 0.47-1.09; Pb 260-818; Zn 742-1,810 mg kg(-1)) and most of samples exceeded the probable effect level of the Canadian Sediment Quality Guidelines for the Protection of Aquatic Life.
authors: Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Joel Montes Camarena s/n, 82040, Mazatlán, Sinaloa, Mexico, paezos@ola.icmyl.unam.mx.
authors: F
authors: F
authors: Páez-Osuna
authors: H
authors: H
authors: Bojórquez-Leyva
authors: M
authors: M
authors: Bergés-Tiznado
authors: O A
authors: OA
authors: Rubio-Hernández
authors: J F
authors: JF
authors: Fierro-Sañudo
authors: J
authors: J
authors: Ramírez-Rochín
authors: J A
authors: JA
authors: León-Cañedo
mesh_terms: D019216:Metals, Heavy / Q000032:analysis* / Q000737:chemistry; D008800:Mexico; D008906:Mining; D045483:Rivers / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry; D060753:Water Quality
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical