Perfluorinated compounds in soils from Liaodong Bay with concentrated fluorine industry parks in China

Wang, Pei; Wang, Tieyu; Giesy, John P.; Lü, Yonglong

doi:10.1016/j.chemosphere.2013.02.017

Cited by 94 publications

(41 citation statements)

References 31 publications

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“…Previous studies have assessed the fate and transport pathways of longer-chained PFAAs emitted from direct sources (i.e., manufacturing and use) (Armitage et al, 2009), and have suggested that atmospheric transport makes an important contribution to transport potential for longer-chained PFAAs. PFAAs can be released into the air during PFAA and fluoropolymer production (Wang et al, 2013;Li et al, 2015). Therefore, it is suggested that air emission from the FIP followed by deposition was a major source of these longer-chained PFCAs to the more distant groundwater (Kwok et al, 2010).…”

Section: Dispersion and Transport Of Pfaas In Groundwater From The Fipmentioning

confidence: 99%

Risk assessment and source identification of perfluoroalkyl acids in surface and ground water: Spatial distribution around a mega-fluorochemical industrial park, China

Liu

Lü

Wang

et al. 2016

Environment International

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134

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Perfluoroalkyl acids (PFAAs) can be released to water bodies during manufacturing and application of PFAA-containing products. In this study, the contamination pattern, attenuation dynamics, sources, pathways, and risk zoning of PFAAs in surface and ground water was examined within a 10 km radius from a mega-fluorochemical industrial park (FIP). Among 12 detected PFAAs, perfluorooctanoic acid (PFOA) dominated, followed by shorter-chained perfluoroalkyl carboxylic acids (PFCAs). PFAA-containing waste was discharged from the FIP, with levels reaching 1.86 mg/L in the nearby rivers flowing to the Bohai sea together with up to 273 μg/L in the local groundwater in the catchment. These levels constitute a human health risks for PFOA and other shorter-chained PFCAs within this location. The concentrations of ∑PFAAs in surface water strongly correlated with the local groundwater. The dominant pollution pathways of PFAAs included (i) discharge into surface water then to groundwater through seepage, and (ii) atmospheric deposition from the FIP, followed by infiltration to groundwater. As the distance increased from the source, PFAAs levels in groundwater showed a sharp initial decrease followed by a gentle decline. The contamination signal from the FIP site on PFAAs in groundwater existed within a radius of 4 km, and at least 3 km from the polluted Dongzhulong River. The major controlling factor in PFAA attenuation processes was likely to be dilution together with dispersion and adsorption to aquifer solids. The relative abundance of PFOA (C8) declined while those of shorter-chained PFCAs (C4-C6) increased during surface water seepage and further dispersion in groundwater.

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Section: Dispersion and Transport Of Pfaas In Groundwater From The Fipmentioning

confidence: 99%

Risk assessment and source identification of perfluoroalkyl acids in surface and ground water: Spatial distribution around a mega-fluorochemical industrial park, China

Liu

Lü

Wang

et al. 2016

Environment International

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134

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“…Concentrations of TF and EOF in soils did not show significant variation in different regions, which is possibly because fluorine is a basic element of natural soil and the occurrence of PFASs and EOF is a just small portion of the total fluorine content. According to study of Wang et al (2013), weak correlations among TF, EOF, and PFASs (γ PFASs − EOF =0.013, γ EOF-TF =0.301) were also reported, indicating that no consistency in the pattern of spatial distributions of TF, EOF, and PFASs in soils, which can be explained that owing to the complexity of soil texture. PFASs and EOF are more likely to be absorbed into soils or transformed into other forms.…”

Section: Mass Balance Of Fluorine In Soilsmentioning

confidence: 99%

Perfluoroalkyl substances in soils around the Nepali Koshi River: levels, distribution, and mass balance

Teng

Wang

et al. 2014

Environ Sci Pollut Res

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Perfluoroalkyl substances (PFASs) were analyzed in surface soils along the Koshi River in Nepal, a typical agricultural country with little industrialization and urbanization. Sixteen target PFASs were quantified in soils from a hilly region in central and eastern Nepal, but only ten PFASs were detected. Concentrations of total PFASs ranged from nd (below the detection limit) to 1.78 ng/g dw. The predominant PFASs in soils were perfluoro-octanoic acid (PFOA) and perfluoro-butanesulfonate (PFBS) with concentrations that ranged from nd to 0.26 ng/g dw and nd to 0.38 ng/g dw, respectively. Results of mass balance analysis also revealed weak associations among concentrations of PFASs, extractable organic fluorine (EOF), and total fluorine (TF). PFASs were relatively evenly distributed among locations. Due to the absence of direct emission of PFASs and slow development of local industry, PFASs in soils originated mostly from longrange atmospheric transport, consumer use, and disposal of PFASs-containing products. Uncontrolled disposal of domestic waste will be a challenge to controlling concentrations of PFASs in Nepal.

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“…The mean concentration of PFOA in serum of residents in Fuxin was 7.6 ng mL À1 , with a maximum of 15 ng mL À1 (Bao et al, 2011). Two fluorine industry parks in the city of Fuxin have been built recently and emission of PFOA has posed a significant impact to local residents and the environment (Bao et al, 2011;Wang et al, 2013c). Concentrations of PFAAs in blood of humans varied among gender and age (Fu et al, 2014).…”

Section: Risks Of Exposure To Pfaas On Health Of Humans 421 Exposumentioning

confidence: 99%

“…The Daling River is located in the Northern Bohai coastal region, which is one of the most developed regions in north China. There are two fluorine chemical parks along the Daling River, which release large amount of wastes directly to the river (Wang et al, 2013c). These two industrial parks were built in 2004 and 2006 respectively, and they currently produce fluoropolymers such as PTFE.…”

Section: Pfaas In Freshwatermentioning

confidence: 99%

A review of sources, multimedia distribution and health risks of perfluoroalkyl acids (PFAAs) in China

et al. 2015

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Perfluorinated compounds in soils from Liaodong Bay with concentrated fluorine industry parks in China

Cited by 94 publications

References 31 publications

Risk assessment and source identification of perfluoroalkyl acids in surface and ground water: Spatial distribution around a mega-fluorochemical industrial park, China

Risk assessment and source identification of perfluoroalkyl acids in surface and ground water: Spatial distribution around a mega-fluorochemical industrial park, China

Perfluoroalkyl substances in soils around the Nepali Koshi River: levels, distribution, and mass balance

A review of sources, multimedia distribution and health risks of perfluoroalkyl acids (PFAAs) in China

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