title: Modeling time-dependent toxicity to aquatic organisms from pulsed exposure of PAHs in urban road runoff.
abstract: Understanding of the magnitude of urban runoff toxicity to aquatic organisms is important for effective management of runoff quality. In this paper, the aquatic toxicity of polycyclic aromatic hydrocarbons (PAHs) in urban road runoff was evaluated through a damage assessment model. Mortality probability of the organisms representative in aquatic environment was calculated using the monitored PAHs concentration in road runoff. The result showed that the toxicity of runoff in spring was higher than those in summer. Analysis of the time-dependent toxicity of series of runoff water samples illustrated that the toxicity of runoff water in the final phase of a runoff event may be as high as those in the initial phase. Therefore, the storm runoff treatment systems or strategies designed for capture and treatment of the initial portion of runoff may be inappropriate for control of runoff toxicity.
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Youbin
authors.initials: Y
authors.lastname: Ye
authors.forename: Yindong
authors.initials: Y
authors.lastname: Tong
authors.forename: Langbo
authors.initials: L
authors.lastname: Ou
authors.forename: Dan
authors.initials: D
authors.lastname: Hu
authors.forename: Xuejun
authors.initials: X
authors.lastname: Wang
mesh_terms: D000818:Animals; D059001:Aquatic Organisms / Q000187:drug effects* / Q000378:metabolism; D004784:Environmental Monitoring; D008962:Models, Theoretical; D011084:Polycyclic Aromatic Hydrocarbons / Q000378:metabolism / Q000633:toxicity*; D012621:Seasons; D013997:Time Factors; D014506:Urban Renewal; D014874:Water Pollutants, Chemical / Q000378:metabolism / Q000633:toxicity*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical