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Aquatic exposures of chemical mixtures in urban environments : approaches to impact assessment

Dick de Zwart, William Adams, Malyka Galay Burgos, Juliane Hollender, Marion Junghans, Graham Merrington, Derek Muir, Thomas Parkerton, Karel De Schamphelaere (UGent) , Graham Whale, et al.
(2018) ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. 37(3). p.703-714
Author
Organization
Abstract
Urban regions of the world are expanding rapidly, placing additional stress on water resources. Urban water bodies serve many purposes, from washing and sources of drinking water to transport and conduits for storm drainage and effluent discharge. These water bodies receive chemical emissions arising from either single or multiple point sources, diffuse sources which can be continuous, intermittent, or seasonal. Thus, aquatic organisms in these water bodies are exposed to temporally and compositionally variable mixtures. We have delineated source-specific signatures of these mixtures for diffuse urban runoff and urban point source exposure scenarios to support risk assessment and management of these mixtures. The first step in a tiered approach to assessing chemical exposure has been developed based on the event mean concentration concept, with chemical concentrations in runoff defined by volumes of water leaving each surface and the chemical exposure mixture profiles for different urban scenarios. Although generalizations can be made about the chemical composition of urban sources and event mean exposure predictions for initial prioritization, such modeling needs to be complemented with biological monitoring data. It is highly unlikely that the current paradigm of routine regulatory chemical monitoring alone will provide a realistic appraisal of urban aquatic chemical mixture exposures. Future consideration is also needed of the role of nonchemical stressors in such highly modified urban water bodies.
Keywords
Mixture, Predictive toxicology, Risk assessment, Water quality, SOURCE APPORTIONMENT, INDEPENDENT ACTION, PREDICTIVE MODELS, ACTING CHEMICALS, STREAM SYNDROME, SURFACE WATERS, TOXICITY, QUALITY, POLLUTANTS, MANAGEMENT

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MLA
de Zwart, Dick, et al. “Aquatic Exposures of Chemical Mixtures in Urban Environments : Approaches to Impact Assessment.” ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, vol. 37, no. 3, 2018, pp. 703–14, doi:10.1002/etc.3975.
APA
de Zwart, D., Adams, W., Galay Burgos, M., Hollender, J., Junghans, M., Merrington, G., … Williams, R. (2018). Aquatic exposures of chemical mixtures in urban environments : approaches to impact assessment. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, 37(3), 703–714. https://doi.org/10.1002/etc.3975
Chicago author-date
Zwart, Dick de, William Adams, Malyka Galay Burgos, Juliane Hollender, Marion Junghans, Graham Merrington, Derek Muir, et al. 2018. “Aquatic Exposures of Chemical Mixtures in Urban Environments : Approaches to Impact Assessment.” ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 37 (3): 703–14. https://doi.org/10.1002/etc.3975.
Chicago author-date (all authors)
de Zwart, Dick, William Adams, Malyka Galay Burgos, Juliane Hollender, Marion Junghans, Graham Merrington, Derek Muir, Thomas Parkerton, Karel De Schamphelaere, Graham Whale, and Richard Williams. 2018. “Aquatic Exposures of Chemical Mixtures in Urban Environments : Approaches to Impact Assessment.” ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 37 (3): 703–714. doi:10.1002/etc.3975.
Vancouver
1.
de Zwart D, Adams W, Galay Burgos M, Hollender J, Junghans M, Merrington G, et al. Aquatic exposures of chemical mixtures in urban environments : approaches to impact assessment. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. 2018;37(3):703–14.
IEEE
[1]
D. de Zwart et al., “Aquatic exposures of chemical mixtures in urban environments : approaches to impact assessment,” ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, vol. 37, no. 3, pp. 703–714, 2018.
@article{8550646,
  abstract     = {{Urban regions of the world are expanding rapidly, placing additional stress on water resources. Urban water bodies serve many purposes, from washing and sources of drinking water to transport and conduits for storm drainage and effluent discharge. These water bodies receive chemical emissions arising from either single or multiple point sources, diffuse sources which can be continuous, intermittent, or seasonal. Thus, aquatic organisms in these water bodies are exposed to temporally and compositionally variable mixtures. We have delineated source-specific signatures of these mixtures for diffuse urban runoff and urban point source exposure scenarios to support risk assessment and management of these mixtures. The first step in a tiered approach to assessing chemical exposure has been developed based on the event mean concentration concept, with chemical concentrations in runoff defined by volumes of water leaving each surface and the chemical exposure mixture profiles for different urban scenarios. Although generalizations can be made about the chemical composition of urban sources and event mean exposure predictions for initial prioritization, such modeling needs to be complemented with biological monitoring data. It is highly unlikely that the current paradigm of routine regulatory chemical monitoring alone will provide a realistic appraisal of urban aquatic chemical mixture exposures. Future consideration is also needed of the role of nonchemical stressors in such highly modified urban water bodies.}},
  author       = {{de Zwart, Dick and Adams, William and Galay Burgos, Malyka and Hollender, Juliane and Junghans, Marion and Merrington, Graham and Muir, Derek and Parkerton, Thomas and De Schamphelaere, Karel and Whale, Graham and Williams, Richard}},
  issn         = {{0730-7268}},
  journal      = {{ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY}},
  keywords     = {{Mixture,Predictive toxicology,Risk assessment,Water quality,SOURCE APPORTIONMENT,INDEPENDENT ACTION,PREDICTIVE MODELS,ACTING CHEMICALS,STREAM SYNDROME,SURFACE WATERS,TOXICITY,QUALITY,POLLUTANTS,MANAGEMENT}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{703--714}},
  title        = {{Aquatic exposures of chemical mixtures in urban environments : approaches to impact assessment}},
  url          = {{http://doi.org/10.1002/etc.3975}},
  volume       = {{37}},
  year         = {{2018}},
}
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