A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Perfluoroalkyl acids (PFAAs) in indoor and outdoor dusts around a mega fluorochemical industrial park in China: Implications for human exposure
Abstract The manufacture of fluorochemicals can lead to high levels of perfluoroalkyl acids (PFAAs) contaminating the surrounding environment and consequently elevated exposure to the local residents. In this study, measurements of PFAAs associated with indoor and outdoor dusts around a mega fluorochemical industrial park (FIP) were made. Perfluorooctanoic acid (PFOA) and short-chain perfluoroalkyl carboxylic acids (C4–C7 PFCAs) were the predominant forms in all samples. The signature of the PFAAs in dusts in the local area matched that found within the FIP complex. The contamination plume in the local area could be linked to the prevailing wind direction starting from the FIP. The dust concentrations decreased exponentially with distance from the FIP (noticeably in the first 5km). PFAAs contamination could be detected at the furthest location, 20km away from the FIP. The concentrations of PFAAs were higher in indoor dust (73–13,500ng/g, median: 979ng/g) than those in outdoor dust (5–9495ng/g, median: 62ng/g) at every location. The highest estimated daily intake of PFOA via dust ingestion (26.0ng/kg·bw/day) was for toddlers (2–5years) living 2km away from the FIP, which is posing human health risk, though exposure remains within the provisional tolerable daily intake values.
Highlights 12 PFAAs were detected in dusts around a mega fluorochemical industrial park. PFOA was the predominant PFAAs followed by C4–C7 PFCAs. PFAAs congener patterns in outdoor dusts were similar to those in indoor dusts. PFAAs concentrations were higher in indoor dusts than in corresponding outdoor dusts at every site. High EDI of PFOA, though below the tolerable levels, is posing human health risk.
Perfluoroalkyl acids (PFAAs) in indoor and outdoor dusts around a mega fluorochemical industrial park in China: Implications for human exposure
Abstract The manufacture of fluorochemicals can lead to high levels of perfluoroalkyl acids (PFAAs) contaminating the surrounding environment and consequently elevated exposure to the local residents. In this study, measurements of PFAAs associated with indoor and outdoor dusts around a mega fluorochemical industrial park (FIP) were made. Perfluorooctanoic acid (PFOA) and short-chain perfluoroalkyl carboxylic acids (C4–C7 PFCAs) were the predominant forms in all samples. The signature of the PFAAs in dusts in the local area matched that found within the FIP complex. The contamination plume in the local area could be linked to the prevailing wind direction starting from the FIP. The dust concentrations decreased exponentially with distance from the FIP (noticeably in the first 5km). PFAAs contamination could be detected at the furthest location, 20km away from the FIP. The concentrations of PFAAs were higher in indoor dust (73–13,500ng/g, median: 979ng/g) than those in outdoor dust (5–9495ng/g, median: 62ng/g) at every location. The highest estimated daily intake of PFOA via dust ingestion (26.0ng/kg·bw/day) was for toddlers (2–5years) living 2km away from the FIP, which is posing human health risk, though exposure remains within the provisional tolerable daily intake values.
Highlights 12 PFAAs were detected in dusts around a mega fluorochemical industrial park. PFOA was the predominant PFAAs followed by C4–C7 PFCAs. PFAAs congener patterns in outdoor dusts were similar to those in indoor dusts. PFAAs concentrations were higher in indoor dusts than in corresponding outdoor dusts at every site. High EDI of PFOA, though below the tolerable levels, is posing human health risk.
Perfluoroalkyl acids (PFAAs) in indoor and outdoor dusts around a mega fluorochemical industrial park in China: Implications for human exposure
Su, Hongqiao (author) / Lu, Yonglong (author) / Wang, Pei (author) / Shi, Yajuan (author) / Li, Qifeng (author) / Zhou, Yunqiao (author) / Johnson, Andrew C. (author)
Environmental International ; 94 ; 667-673
2016-07-01
7 pages
Article (Journal)
Electronic Resource
English