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Spatio-species variation of halogenated organic pollutants reflected by bird feathers
Xi Chen1, Pei-Xin Su1, Xu-Tong Zhang1
1State Key Laboratory of Advanced Environmental Technology and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of the Chinese Academy of Sciences, Beijing 100049, China.
Abstract:
Feathers have emerged as a promising non-destructive monitoring tool for halogenated organic pollutants (HOPs). However, the influence of feather substructure and contaminant properties on HOP accumulation, and the ability of feathers to reflect regional and interspecific variation in contamination, remain incompletely understood. This study investigated HOP partitioning between feather shafts and vanes, evaluated the relationships between HOP concentrations and compositions in feathers and internal tissues, and examined spatial and species-specific variation across three representative regions in China. Perfluorosulfonic acids (PFSAs) preferentially accumulated in the shaft, whereas relatively short-chain perfluorocarboxylic acids (PFCAs,
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