|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|6306051||1618807||2016||8 صفحه PDF||سفارش دهید||دانلود رایگان|
- PFOA around a fluoropolymer plant decreased greatly.
- Concentrations of PFHxA appear to have increased in well and surface water.
- Widespread groundwater contamination by PFOA was found around the plant.
- PFOA levels in tap water were lower than the EPA Lifetime Health Advisory value.
This study was conducted to clarify the spatial distributions of perfluorooctanoic acid (PFOA) and perfluorohexanoic acid (PFHxA) in well, surface and tap water around a fluoropolymer plant in Osaka between 2003 and 2016 and to predict the fate of those chemicals in these aquatic environments. We analyzed 44 well, six surface and six tap water samples collected within a 5Â km radius of the plant. The PFOA concentrations in well water ranged from 45.2 to 7440Â ng/L (medianÂ =Â 240Â ng/L), while PFHxA concentrations ranged from 9.68 to 970 (medianÂ =Â 45.4Â ng/L) in 2015-2016. The concentration of other perfluoroalkyl carboxylic acids were lower than PFOA and PFHxA in well water. Fixed-point observation showed that the levels of PFOA decreased greatly over the last few decades, whereas those of PFHxA increased in both well and surface water. Further monitoring and investigation are suggested to understand PFOA and PFHxA contamination and fate in the environment, as well as their potential for human exposure in this region.
Journal: Chemosphere - Volume 164, December 2016, Pages 603-610