从一项为期八年的关于城市陆地生态系统中超基和多基物质研究的新见解
Eldbjørg S Heimstad1, Torgeir Nygård2, Børge Moe2
1NILU, The Fram Centre, P. box 6606 Stakkevollan, NO-9296, Tromsø, Norway.
Environmental pollution (Barking, Essex : 1987)
|March 8, 2024
概括
在挪威的城市环境中,和多基基物质 (PFAS) 普遍存在. 某些物种,如虫和鸟,超过了饮食值,表明这些持久化学物质对野生动物的潜在风险.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 野生动物生物学 野生动物生物学
背景情况:
- 和多醇基物质 (PFAS) 是持久性有机污染物,具有广泛的环境污染.
- 了解陆地生态系统中的PFAS分布和生物积累对于风险评估至关重要.
研究的目的:
- 为了分析来自挪威城市地区的各种陆地样本 (土壤,地,鸟,捕食动物肝脏) 的PFAS度.
- 评估选定物种作为城市PFAS排放的生物指标的潜力.
- 评估PFAS在所研究的食物网中的生物积累和生物放大潜力.
主要方法:
- 在2013-2020年期间收集的土壤,土虫,鸟蛋,红狐肝和棕鼠肝样本中分析PFAS.
- 量化特定的PFAS化合物,包括PFOS,长链PFCAs, 6:2 FTS, 8:2 FTS和FOSA.
- 生物群-土壤积累因子和生物放大因子的计算.
主要成果:
- PFOS和长链PFCAs占主导地位,显示出无处不在的分布.
- 在虫和鸟蛋中发现高度的6:2 FTS和8:2 FTS,特别是在工业场所附近.
- 城市生物群中的PFAS含量明显高于背景地区;土和野蛋超过了欧洲食用捕食者的值.
结论:
- 城市地区的陆地物种积累了大量的PFAS,其中一些物种作为有效的生物指标.
- PFAS污染对野生动物构成潜在的风险,如虫和鸟的饮食值超出所示.
- 该研究强调需要监测和管理城市环境中的PFAS污染,以保护生态系统的健康.
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