Fate and redistribution of perfluoroalkyl acids through AFFF-impacted groundwaterVise andre og tillknytning
2017 (engelsk)Inngår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 596, s. 360-368Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
Leaching of perfluoroalkyl acids (PFAAs) from a local point source, a fire-fighting training area, has led to extensive contamination of a groundwater aquifer which has spread underneath part of a nearby town, Oakey, situated in the State of Queensland, Australia. Groundwater is extracted by residents from privately owned wells for daily activities such as watering livestock and garden beds. The concentration of 10 PFAAs in environmental and biological samples (water, soil, grass, chicken egg yolk, serum of horses, cattle and sheep), as well as human serum was investigated to determine the extent of contamination in the town and discuss fate and redistribution of PFAAs. Perfluorooctane sulfonate (PFOS) was the dominant PFAA in all matrices investigated, followed by perfluorohexane sulfonate (PFHxS). PFOS concentrations measured in water ranged between <0.17-14 mu g/L, concentrations of PFHxS measured between <0.07-6 mu g/L. PFAAs were detected in backyards (soil, grass), livestock and chicken egg yolk. Significant differences (p < 0.01) in PFOS and PFHxS concentrations in two groups of cattle were found, one held within the contamination plume, the other in the vicinity but outside of the contamination plume. In human serum PFOS concentrations ranged from 38 to 381 mu g/L, while PFHxS ranged from 39 to 214 mu g/L. Highest PFOS concentrations measured in human serum were >30-fold higher compared to the general Australian population. Through use of contaminated groundwater secondary sources of PFAA contamination are created on private property, leading to further redistribution of contamination and creation of additional human exposure pathways.
sted, utgiver, år, opplag, sider
Elsevier, 2017. Vol. 596, s. 360-368
Emneord [en]
Groundwater contamination, Aqueous film-forming foams (AFFF), Human blood serum, Creation of secondary sources
HSV kategori
Identifikatorer
URN: urn:nbn:se:oru:diva-57896DOI: 10.1016/j.scitotenv.2017.04.095ISI: 000401557600038PubMedID: 28441576Scopus ID: 2-s2.0-85018462297OAI: oai:DiVA.org:oru-57896DiVA, id: diva2:1107479
Merknad
Funding Agencies:
ARC future fellowship FF120100546
University of Queensland
Queensland Department of Health
2017-06-092017-06-092018-09-12bibliografisk kontrollert