naa a22 4500 510751628 CHVBK 20180411083106.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11270-013-1642-x doi (NATIONALLICENCE)springer-10.1007/s11270-013-1642-x Impact of AMD Processes on the Water Dams of the Iberian Pyrite Belt: Overall Hydrochemical Characterization (Huelva, SW Spain) [Elektronische Daten] [J. Cerón, J. Grande, M. de la Torre, M. Santisteban, T. Valente] In the Iberian Pyrite Belt (IPB), the process of acid mine drainage (AMD) is anthropogenic in origin. The impact of AMD pollution processes is characterised in 23 dams in the IPB. Based on the pH values, three groups are established: group 1 (pH <3), group 2 (pH3-5) and group 3 (pH >5). Group 1 has the lowest pH values, with all of them lower than 3 and a minimum value of 1.9. The pH values are higher in the other groups, with lower values in group 2 (between 2.34 and 6.15) and higher in group 3 (between 4.36 and 7.58). Conductivity is higher in group 1 (varying between 1,005 and 12,280μScm−1), while it takes intermediate values in group 2 (between 139 and 2,652 μScm−1), and group 3 is the lowest (between 80 and 750μScm−1). Among the ions analysed, the concentration of sulphates stands out due to its magnitude, which is always greater than that of the other ions in the three groups. It is in group 1 that it reaches the highest values, with 6,200mg/L, while it is lower in the others. Applying variable cluster analysis shows that in group 1, pH exercises control over the dissolution of most of the metals. It is also sulphates that control the value for conductivity. In group 2, precipitation is the main variable that controls the dissolution of ions, with the influence of pH being lower. In group 3, it is observed that in pH control metals, conductivity is controlled by sulphates. Springer Science+Business Media Dordrecht, 2013 AMD nationallicence Cluster analysis nationallicence Heavy metal nationallicence Iberian Pyrite Belt nationallicence Metals nationallicence Pollution nationallicence Water quality nationallicence Water dam nationallicence Cerón J. Centro de Investigación para la Ingeniería en Minería Sostenible (CIPIMS), Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Frontera s/n, 21819, Huelva, Spain aut Grande J. Centro de Investigación para la Ingeniería en Minería Sostenible (CIPIMS), Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Frontera s/n, 21819, Huelva, Spain aut de la Torre M. Centro de Investigación para la Ingeniería en Minería Sostenible (CIPIMS), Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Frontera s/n, 21819, Huelva, Spain aut Santisteban M. Centro de Investigación para la Ingeniería en Minería Sostenible (CIPIMS), Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Frontera s/n, 21819, Huelva, Spain aut Valente T. Centro de Investigação Geológica, Ordenamento e Valorização de Recursos Geológicos (CIG-R), Departamento de Ciências da Terra, Universidade do Minho, 4710-057, Braga, Portugal aut Water, Air, & Soil Pollution Springer Netherlands 224/8(2013-08-01), 1-11 0049-6979 224:8<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1642-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1642-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cerón J. Centro de Investigación para la Ingeniería en Minería Sostenible (CIPIMS), Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Frontera s/n, 21819, Huelva, Spain aut NATIONALLICENCE 700 1- Grande J. Centro de Investigación para la Ingeniería en Minería Sostenible (CIPIMS), Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Frontera s/n, 21819, Huelva, Spain aut NATIONALLICENCE 700 1- de la Torre M. Centro de Investigación para la Ingeniería en Minería Sostenible (CIPIMS), Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Frontera s/n, 21819, Huelva, Spain aut NATIONALLICENCE 700 1- Santisteban M. Centro de Investigación para la Ingeniería en Minería Sostenible (CIPIMS), Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Frontera s/n, 21819, Huelva, Spain aut NATIONALLICENCE 700 1- Valente T. Centro de Investigação Geológica, Ordenamento e Valorização de Recursos Geológicos (CIG-R), Departamento de Ciências da Terra, Universidade do Minho, 4710-057, Braga, Portugal aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/8(2013-08-01), 1-11 0049-6979 224:8<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer