Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycyclic Aromatic Hydrocarbons and Quinones in Urban and Rural Stormwater Runoff: Effects of Land Use and Storm Characteristics
https://orcid.org/0000-0002-2914-2569
https://orcid.org/0000-0001-8538-5138
https://orcid.org/0000-0003-3836-0901
Changes in streamwater concentrations in two creeks draining contrasting urbanized landscapes in southern Ontario, Canada, during a major summer rainfall event were used to assess how land use and emission sources influence the fate and behavior of polycyclic aromatic hydrocarbons (PAHs) and quinones (PAQs) in a watershed. By comparing three rainfall events during different seasons, we further explored the influence of seasonal variability, rainfall/runoff amount, and antecedent dry period on PAH behavior. The analysis of concentration–discharge (C–Q) relationships revealed that during a warm weather precipitation event, PAHs and PAQs behaved similarly, had common sources, and were predominantly transported via suspended solids. The importance of land use and emission intensity was reflected in higher concentrations of PAHs and PAQs in the more urbanized creek. PAH loads in that watershed were up to 2 times higher during cold weather events than during the summer event. PAH loads also increased with an increase in runoff ratio and a longer antecedent dry period, suggesting that the flushing of surfaces on which solids had accumulated was an important process for the delivery of PAHs to the streams. In the less urbanized watershed, variation in PAH behavior between events was minor, evidenced by similar C–Q patterns and small differences in PAH loads.
Concentration−discharge relationships can be applied to clarify the intra- and interstorm behavior and transport pathways of polycyclic aromatic hydrocarbons and quinones.
Polycyclic Aromatic Hydrocarbons and Quinones in Urban and Rural Stormwater Runoff: Effects of Land Use and Storm Characteristics
https://orcid.org/0000-0002-2914-2569
https://orcid.org/0000-0001-8538-5138
https://orcid.org/0000-0003-3836-0901
Changes in streamwater concentrations in two creeks draining contrasting urbanized landscapes in southern Ontario, Canada, during a major summer rainfall event were used to assess how land use and emission sources influence the fate and behavior of polycyclic aromatic hydrocarbons (PAHs) and quinones (PAQs) in a watershed. By comparing three rainfall events during different seasons, we further explored the influence of seasonal variability, rainfall/runoff amount, and antecedent dry period on PAH behavior. The analysis of concentration–discharge (C–Q) relationships revealed that during a warm weather precipitation event, PAHs and PAQs behaved similarly, had common sources, and were predominantly transported via suspended solids. The importance of land use and emission intensity was reflected in higher concentrations of PAHs and PAQs in the more urbanized creek. PAH loads in that watershed were up to 2 times higher during cold weather events than during the summer event. PAH loads also increased with an increase in runoff ratio and a longer antecedent dry period, suggesting that the flushing of surfaces on which solids had accumulated was an important process for the delivery of PAHs to the streams. In the less urbanized watershed, variation in PAH behavior between events was minor, evidenced by similar C–Q patterns and small differences in PAH loads.
Concentration−discharge relationships can be applied to clarify the intra- and interstorm behavior and transport pathways of polycyclic aromatic hydrocarbons and quinones.
Polycyclic Aromatic Hydrocarbons and Quinones in Urban and Rural Stormwater Runoff: Effects of Land Use and Storm Characteristics
https://orcid.org/0000-0002-2914-2569
https://orcid.org/0000-0001-8538-5138
https://orcid.org/0000-0003-3836-0901
Changes in streamwater concentrations in two creeks draining contrasting urbanized landscapes in southern Ontario, Canada, during a major summer rainfall event were used to assess how land use and emission sources influence the fate and behavior of polycyclic aromatic hydrocarbons (PAHs) and quinones (PAQs) in a watershed. By comparing three rainfall events during different seasons, we further explored the influence of seasonal variability, rainfall/runoff amount, and antecedent dry period on PAH behavior. The analysis of concentration–discharge (C–Q) relationships revealed that during a warm weather precipitation event, PAHs and PAQs behaved similarly, had common sources, and were predominantly transported via suspended solids. The importance of land use and emission intensity was reflected in higher concentrations of PAHs and PAQs in the more urbanized creek. PAH loads in that watershed were up to 2 times higher during cold weather events than during the summer event. PAH loads also increased with an increase in runoff ratio and a longer antecedent dry period, suggesting that the flushing of surfaces on which solids had accumulated was an important process for the delivery of PAHs to the streams. In the less urbanized watershed, variation in PAH behavior between events was minor, evidenced by similar C–Q patterns and small differences in PAH loads.
Concentration−discharge relationships can be applied to clarify the intra- and interstorm behavior and transport pathways of polycyclic aromatic hydrocarbons and quinones.
Polycyclic Aromatic Hydrocarbons and Quinones in Urban and Rural Stormwater Runoff: Effects of Land Use and Storm Characteristics
Awonaike, Boluwatife (Autor:in) / Lei, Ying Duan (Autor:in) / Parajulee, Abha (Autor:in) / Mitchell, Carl P. J. (Autor:in) / Wania, Frank (Autor:in)
ACS ES&T Water ; 1 ; 1209-1219
14.05.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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