Abstract：
As a nondestructive means of environmental monitoring, bird feathers have been used to analyze levels of per- and polyfluoroalkyl substances (PFASs) in specific environments. In this study, feather samples from 10 waterbird species around Poyang Lake were collected, and a pretreatment method for PFASs in feathers was optimized. The results showed that a combined cleaning method using ultrapure water and n-hexane effectively removed external PFASs. Twenty-three legacy and emerging PFASs were identified in the feathers of waterbirds, of which hexafluoropropylene oxides (HFPOs), chlorinated polyfluoroalkyl ether sulfonates (Cl-PFESAs), and sodium p-perfluorinated noneoxybenzene sulfonate (OBS) were reported for the first time, with their concentrations ranging from 0.060-2.4 ng·g-1 dw, 0.046-30 ng·g-1 dw, and lower than the method detection limit to 30 ng·g-1 dw, respectively. Compound- and species-specific bioaccumulation of PFASs was observed in the feathers of different waterbird species, suggesting that different PFAS types can be monitored through the selection of different species. Moreover, the concentrations of most PFCAs (except perfluorobutyric acid), perfluorooctane sulfonate (PFOS), and perfluorooctane sulfonamide (FOSA) were significantly positively correlated with δ15N (p < 0.05), while the concentrations of HFPOs, Cl-PFESAs, and OBS had significant positive correlations with δ13C. This indicates that the bioaccumulation of legacy and emerging PFASs in waterbird feathers is affected by their trophic level, feeding habits, and foraging area.
摘要：
作为一种无损的环境监测手段,鸟类羽毛已用于分析特定环境中的全氟烷基物质和多氟烷基物质（PFAS）的水平。在这项研究中,收集了鄱阳湖周围10种水鸟的羽毛样本，优化了羽毛中PFASs的预处理方法。结果表明，使用超纯水和正己烷的组合清洁方法可有效去除外部PFASs。在水鸟的羽毛中发现了23个遗留和新兴的PFAS，其中六氟环氧丙烷(HFPO)，氯化多氟烷基醚磺酸盐(Cl-PFESA)，首次报道了对全氟化非苯磺酸钠（OBS），它们的浓度范围为0.060-2.4ng·g-1dw，0.046-30ng·g-1dw，低于方法检测限30ng·g-1dw，分别。在不同水鸟物种的羽毛中观察到PFAS的特定于环境和物种的生物积累，这表明可以通过选择不同的物种来监测不同的PFAS类型。此外，大多数PFCA的浓度（全氟丁酸除外），全氟辛烷磺酸(PFOS)，全氟辛烷磺酰胺(FOSA)与δ15N呈显著正相关(p<0.05),而HFPO的浓度，Cl-PFESA,OBS与δ13C呈显著正相关。这表明水鸟羽毛中遗留和新兴PFAS的生物积累受到其营养水平的影响，喂养习惯,和觅食区。
