Spatio-temporal assessment of perfluorinated compounds in the Brisbane River system,Australia: Impact of a major flood event |
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| Authors: | Christie Gallen Christine Baduel Foon Yin Lai Kristie Thompson Jack Thompson Michael Warne Jochen F Mueller |
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| Institution: | 1. The University of Queensland, National Research Centre for Environmental Toxicology (Entox), Coopers Plains, Brisbane, Queensland, Australia;2. Water Quality and Investigations, Environmental Monitoring and Assessment Science, Science Delivery, Department of Science, Information Technology, Innovation and the Arts, Dutton Park, Brisbane, Queensland, Australia |
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| Abstract: | Perfluorinated chemicals including PFOA and PFOS have been widely used in consumer products and have become ubiquitous pollutants widely distributed in the aqueous environment. Following a major flood event in 2011, water samples were collected along a spatial gradient of the Brisbane River system to provide an initial estimate of the release of PFASs from flooded urban areas. PFOA (mean concentrations 0.13–6.1 ng L−1) and PFOS (mean concentrations 0.18–15 ng L−1) were the most frequently detected and abundant PFASs. Mean total PFASs concentrations increased from 0.83 ng L−1 at the upstream Wivenhoe Dam to 40 ng L−1 at Oxley Creek, representing an urban catchment. Total masses of PFOA and PFOS delivered into Moreton Bay from January to March were estimated to be 5.6 kg and 12 kg respectively. From this study, urban floodwaters appear to be a previously overlooked source of PFASs into the surrounding environment. |
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| Keywords: | Perfluorinated chemicals PFOA PFOS Floodwater Urban Australia |
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