Systemic Physiological and Ecotoxicologal Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium; Behavioural Ecology and Ecophysiology Group (BECO), Department of Biology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium.
Behavioural Ecology and Ecophysiology Group (BECO), Department of Biology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium.
Sci Total Environ. 2019 Mar 20;657:111-123. doi: 10.1016/j.scitotenv.2018.12.072. Epub 2018 Dec 7.
Perfluoroalkylated acids (PFAAs) are persistent chemicals that have been detected globally in the environment and in wildlife. Although it is known that PFAAs sorb to solid matrices, little is known on PFAA concentrations in soils. PFAA pollution has often been studied in aquatic invertebrates. However, this has rarely been done on terrestrial species. In the present study, we examined whether the concentrations of 15 PFAAs in isopods (Oniscidae), collected at a fluorochemical plant and in four other areas, representing a gradient in distance from the pollution source (1 km to 11 km), were related to those in the soil and in eggs of a songbird, the great tit (Parus major), collected in the same areas. Additionally, we examined the effect of physicochemical properties such as total organic carbon (TOC) and clay content on the relationship between the concentrations in soil and isopods. Finally, we examined the composition profile in the soil and isopods. Mean PFOS and PFOA concentrations of 1700 ng/g dw and 24 ng/g dw were detected in the soil at the plant. PFOS and PFPeA were the dominant PFAAs in isopods and were detected at mean concentrations of 253 and 108 ng/g ww, respectively. The great tit eggs showed elevated mean PFOS concentrations of 55,970 ng/g ww. In most cases, PFAA concentrations decreased with increasing distance from the plant. As PFAA concentrations in isopods were correlated with concentrations in the soils, isopods could serve as a bioindicator for PFAA concentrations in soils. Additionally, there were indications that isopods could also serve as a bioindicator for PFAA concentrations in eggs of great tits. However, these indications were only the case at two locations, showing the need to further monitor the possibilities of using isopods as a bioindicator for PFAA concentrations in song bird eggs. CAPSULE: Elevated PFAA concentrations in isopods reflected concentrations in songbird eggs and in soil, indicating that trophic transfer of PFAAs from soil, via isopods, to songbirds might play a role in the PFAA exposure of terrestrial songbirds.
全氟烷基酸（PFAAs）是一种持久性化学物质，已在全球环境和野生动物中检测到。尽管已知 PFAAs 会被固体基质吸附，但对土壤中 PFAAs 浓度的了解甚少。PFAA 污染经常在水生无脊椎动物中进行研究。然而，在陆生物种中很少这样做。在本研究中，我们研究了在氟化学工厂和其他四个地区（距离污染源 1 公里至 11 公里）采集的等足类（Oniscidae）中的 15 种 PFAAs 浓度是否与土壤和同地区采集的鸣禽大山雀（Parus major）的卵中的浓度有关。此外，我们还研究了总有机碳（TOC）和粘土含量等理化性质对土壤和等足类之间浓度关系的影响。最后，我们研究了土壤和等足类中的成分分布。在工厂的土壤中检测到 1700ng/g dw 的 PFOS 和 24ng/g dw 的 PFOA 平均浓度。PFOS 和 PFPeA 是等足类中主要的 PFAAs，其平均浓度分别为 253ng/g ww 和 108ng/g ww。大山雀卵中 PFOS 的平均浓度为 55970ng/g ww。在大多数情况下，随着与工厂距离的增加，PFAA 浓度降低。由于等足类中的 PFAA 浓度与土壤中的浓度相关，因此等足类可以作为土壤中 PFAA 浓度的生物标志物。此外，有迹象表明，等足类也可以作为大山雀卵中 PFAA 浓度的生物标志物。然而，这些迹象仅在两个地点出现，表明需要进一步监测使用等足类作为鸣禽卵中 PFAA 浓度的生物标志物的可能性。摘要：等足类中升高的 PFAA 浓度反映了鸣禽卵和土壤中的浓度，表明 PFAAs 可能通过等足类从土壤向鸣禽的营养转移，在陆生鸣禽的 PFAA 暴露中发挥作用。
