Abstract The study aimed to assess the concentration of dioxins, furans, and dioxin-like polychlorinated biphenyls (PCBs) in natural feed additives used in animal nutrition. The research material consisted of four natural sorbents used as feed additives registered in the EU. The samples were analysed for the content of six octachlorodibenzo-p-dioxins (OCDDs) congeners, nine octachlorodibenzofurans (OCDFs) and fourteen dL-PCBs, and seven PCB congeners. Detailed analysis was performed using gas chromatography with high-resolution mass spectrometry. Analysing the results of congeners of individual sorbents, it was found that they were below the limit of detection or quantification and can be used as feed additives.

中文翻译：

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天然动物饲料添加剂中二恶英、呋喃和类二恶英 PCB 的浓度

摘要 本研究旨在评估用于动物营养的天然饲料添加剂中二恶英、呋喃和二恶英类多氯联苯 (PCB) 的浓度。研究材料由四种天然吸附剂组成，用作欧盟注册的饲料添加剂。分析了样品的六种八氯二苯并对二恶英 (OCDD) 同源物、九种八氯二苯并呋喃 (OCDF) 和十四种 dL-PCB 以及七种 PCB 同源物的含量。使用气相色谱和高分辨率质谱进行详细分析。分析单个吸附剂的同源物的结果，发现它们低于检测或定量限，可用作饲料添加剂。