Abstract
The emission estimation of PFOS provides a clear profile of the industrial and domestic sources. After emission from the sources, how do the pollutants enter the environment? In this chapter, a comprehensive estimation of pollution pathways of emerging pollutants released into the environment was provided (Liu et al. 2017), followed by a life cycle assessment (LCA) perspective (Meng et al. 2017). Except for PFOS, PFOA was also selected as an example of emerging pollutants. After the Stockholm Convention restricted PFOS, there has been increasing concerns over the adverse effects of PFOA. Eventually, PFOA, its salts, and PFOA-related compounds were listed in Annex A of the Stockholm Convention (decision SC−9/12) as of May 2019. The estimation of PFOS/PFOA environment releases includes emission and transport processes such as atmospheric deposition, runoff, soil leaching, and surface water seepage. This allows a further calculation of the load of the pollutant in different environmental compartments. The LCA for PFOA/PFO provides more detailed processes from production and use to waste management and environmental transport. This approach was used to estimate the emissions of PFOA/PFO at multiple life cycle stages. The results presented not only current but also future flows of PFOA/PFO and could further help policymakers with more accurate risk assessments and implement feasible policies for control over the emission of PFOA/PFO at an important stage of their life cycle.
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Liu, Z., Meng, J., Lu, Y. (2023). Environmental Pathways of Emerging Pollutants. In: Lu, Y., Wang, P., Yuan, J. (eds) Ecological Risks of Emerging Pollutants in Urbanizing Regions. Springer, Singapore. https://doi.org/10.1007/978-981-19-9630-6_3
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