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Accumulation of lipophilic and proteinophilic halogenated organic pollutants (HOPs) in the different types of feathers of laying hens
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2024-12-19 , DOI: 10.1016/j.jhazmat.2024.136942
Xi Chen, Xiao-Jun Luo, Qun-Jie Feng, Yu Liu, Jun-Zhe Dai, Peng-Peng Chen, Pei-Xin Su, Qing-Rong Yang, Yan-Hong Zeng, Bi-Xian Mai

This study investigated the bioaccumulation of halogenated organic pollutants (HOPs) in three types of feathers from laying hens through exposure experiments. The HOPs included lipophilic polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs), as well as proteinophilic perfluoroalkyl carboxylic acids (PFCAs). Concentrations of PCBs, PBDEs, and short-chain PFCAs (≤8) were significantly higher in the body feathers than in the primary feathers, while long-chain PFCAs (>8) showed no significant differences among primary, tail, and body feathers. The concentration order in the feathers was ∑12PFCAs > ∑7PBDEs > ∑13PCBs, which was completely reversed by the exposure dose. The transfer rates (TRs) (concentration ratio of feather to serum) of PFCAs (0.11–6.8) were one order of magnitude higher than those (0.01–0.30) of PCBs and PBDEs. These results indicate that PFCAs preferentially accumulate in feathers compared to PBDEs and PCBs. TRs, regardless of whether they were lipophilic or proteinophilic HOPs, were significantly and positively correlated with the protein-water partition coefficient (log Kpw). Strong and significant correlations between feathers and inner tissues were primarily observed in body feathers. Egg-laying significantly affects PFCA accumulation in feathers and even distorts the actual exposure dose in hens; however, its impact on PCBs and PBDEs is limited. These findings provide crucial insights into HOP deposition in bird feathers.

中文翻译:


亲脂性和亲蛋白性卤代有机污染物 (HOP) 在蛋鸡不同类型羽毛中的积累



本研究通过暴露实验调查了蛋鸡三种类型羽毛中卤代有机污染物 (HOP) 的生物积累情况。HOPs 包括亲脂性多氯联苯 (PCB) 和多溴联苯醚 (PBDE),以及亲蛋白全氟烷基羧酸 (PFCA)。多氯联苯、多溴联苯醚和短链 PFCA (≤8) 在体羽中浓度显著高于初级羽毛,而长链 PFCA (>8) 在初级羽毛、尾羽和体羽之间没有显著差异。羽毛中的浓度顺序为 ∑12PFCAs、> ∑7PBDEs、> ∑13PCBs,这与暴露剂量完全相反。PFCA 的转移速率 (TRs)(羽毛与血清的浓度比)(0.11-6.8) 比 PCB 和 PBDE 的转移速率 (0.01-0.30) 高一个数量级。这些结果表明,与 PBDE 和 PCB 相比,PFCA 优先在羽毛中积累。TRs,无论它们是亲脂性还是亲蛋白性 HOP,都与蛋白质-水分配系数 (log Kpw) 显著呈正相关。羽毛和内部组织之间的强而显着的相关性主要在体羽中观察到。产蛋会显着影响羽毛中 PFCA 的积累,甚至会扭曲母鸡的实际暴露剂量;然而,它对 PCB 和 PBDE 的影响是有限的。这些发现为鸟类羽毛中 HOP 沉积提供了重要见解。
更新日期:2024-12-19
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