Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization
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 was...
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2018-07-01
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| Series: | Dyna |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/dyna/article/view/64839 |
| _version_ | 1818394778455244800 |
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| author | Carlos Zafra-Mejía Hugo Rondón-Quintana Álvaro Gutiérrez-Malaxechebarria |
| author_facet | Carlos Zafra-Mejía Hugo Rondón-Quintana Álvaro Gutiérrez-Malaxechebarria |
| author_sort | Carlos Zafra-Mejía |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-14T06:06:37Z |
| format | Article |
| id | doaj.art-2e3d290ddf454425831a98a3418180d5 |
| institution | Directory Open Access Journal |
| issn | 0012-7353 2346-2183 |
| language | English |
| last_indexed | 2024-12-14T06:06:37Z |
| publishDate | 2018-07-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Dyna |
| spelling | doaj.art-2e3d290ddf454425831a98a3418180d52022-12-21T23:14:16ZengUniversidad Nacional de ColombiaDyna0012-73532346-21832018-07-0185206859410.15446/dyna.v85n206.6483949135Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterizationCarlos Zafra-Mejía0Hugo Rondón-Quintana1Álvaro Gutiérrez-Malaxechebarria2Universidad Distrital Francisco José de CaldasUniversidad Distrital Francisco José de CaldasUniversidad Distrital Francisco José de CaldasThe 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.https://revistas.unal.edu.co/index.php/dyna/article/view/64839heavy metalsurface runoffurban pollutionwash-offwater quality |
| spellingShingle | Carlos Zafra-Mejía Hugo Rondón-Quintana Álvaro Gutiérrez-Malaxechebarria Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization Dyna heavy metal surface runoff urban pollution wash-off water quality |
| title | Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization |
| title_full | Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization |
| title_fullStr | Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization |
| title_full_unstemmed | Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization |
| title_short | Heavy metal contribution by runoff in a high-altitude megacity: a method based on the road-deposited sediment characterization |
| title_sort | heavy metal contribution by runoff in a high altitude megacity a method based on the road deposited sediment characterization |
| topic | heavy metal surface runoff urban pollution wash-off water quality |
| url | https://revistas.unal.edu.co/index.php/dyna/article/view/64839 |
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