Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional de Colombia
2018
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| _version_ | 1876422158956101632 |
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| author | Carlos Zafra-Mejía |
| author_facet | Carlos Zafra-Mejía |
| contents | Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization Carlos Zafra-Mejía Hugo Rondón-Quintana Álvaro Gutiérrez-Malaxechebarria Ingeniería off Wash Heavy metal Water quality Surface runoff The objective of this paper is to present the development and application of a method to estimate the heavy metal (HM) contribution derived from the wash-off by runoff on road-deposited sediments (RDS) in a high-altitude megacity (Bogota, Colombia). The method is based on the development of a HM wash-off equation which considers two processes: HM transportation and HM leaching. HM contribution by runoff ranges between 24.7% and 50.3%, relative to the total mass per unit area of HMs associated with dry-weather RDS (Mn, Cd, As, Zn, Cu, Ba, Pb, and Fe). The HMs that show a greater contribution are Cd, Zn, and Mn. RDS size fraction below 250 µm contributes on average 81.6% of the total HM load washed-off by runoff. The findings suggest that the RDS size fraction below 250 µm must be the reference fraction for the control systems design of HM pollution in Bogota city. 2018 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49659032010 https://www.redalyc.org/journal/496/49659032010/ https://www.redalyc.org/journal/496/49659032010/html/ https://www.redalyc.org/journal/496/49659032010/49659032010.epub https://www.redalyc.org/journal/496/49659032010/movil 10.15446/dyna.v85n206.64839 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.206 Vol.85 |
| format | Artículo científico |
| id | redalyc_49659032010 |
| institution | Redalyc |
| language | en |
| publishDate | 2018 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization Carlos Zafra-Mejía Ingeniería off Wash Heavy metal Water quality Surface runoff Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization Carlos Zafra-Mejía Hugo Rondón-Quintana Álvaro Gutiérrez-Malaxechebarria Ingeniería off Wash Heavy metal Water quality Surface runoff The objective of this paper is to present the development and application of a method to estimate the heavy metal (HM) contribution derived from the wash-off by runoff on road-deposited sediments (RDS) in a high-altitude megacity (Bogota, Colombia). The method is based on the development of a HM wash-off equation which considers two processes: HM transportation and HM leaching. HM contribution by runoff ranges between 24.7% and 50.3%, relative to the total mass per unit area of HMs associated with dry-weather RDS (Mn, Cd, As, Zn, Cu, Ba, Pb, and Fe). The HMs that show a greater contribution are Cd, Zn, and Mn. RDS size fraction below 250 µm contributes on average 81.6% of the total HM load washed-off by runoff. The findings suggest that the RDS size fraction below 250 µm must be the reference fraction for the control systems design of HM pollution in Bogota city. 2018 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49659032010 https://www.redalyc.org/journal/496/49659032010/ https://www.redalyc.org/journal/496/49659032010/html/ https://www.redalyc.org/journal/496/49659032010/49659032010.epub https://www.redalyc.org/journal/496/49659032010/movil 10.15446/dyna.v85n206.64839 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.206 Vol.85 |
| title | Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization |
| topic | Ingeniería off Wash Heavy metal Water quality Surface runoff |
| url | https://www.redalyc.org/articulo.oa?id=49659032010 https://www.redalyc.org/journal/496/49659032010/ https://www.redalyc.org/journal/496/49659032010/html/ https://www.redalyc.org/journal/496/49659032010/49659032010.epub https://www.redalyc.org/journal/496/49659032010/movil |