冰川前陆昆虫吸收合成化合物:一个新兴的环境问题
Valeria Lencioni1, Cristiana Rizzi2, Mauro Gobbi3
1Climate and Ecology Unit, Research and Museum Collections Office, MUSE-Museo delle Scienze, Corso del Lavoro e della Scienza, 3, 38122, Trento, Italy. valeria.lencioni@muse.it.
Environmental science and pollution research international
|October 19, 2023
概括
农药和合成香料污染了意大利阿尔卑斯山的溪流和泉源. 水生昆虫和捕食甲虫会积累这些污染物,这表明潜在的食物网从水中转移到陆地上.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 阿尔卑斯山的生态学
背景情况:
- 意大利阿尔卑斯山的冰川养的溪流和泉源是重要的淡水生态系统.
- 这些环境可能容易受到人为污染物的污染.
- 了解水生和陆生无脊椎动物中的污染物积累对于评估生态系统健康至关重要.
研究的目的:
- 在意大利阿尔卑斯山的水生和陆生无脊椎动物中调查特定农药,合成香料和多环芳 (PAH) 的存在和积累.
- 为了确定不同昆虫物种中这些异生菌的组织度.
- 探索这些污染物在当地食物网中的潜在食物转移途径.
主要方法:
- 水和无脊椎动物样本从两个冰川养的溪流 (Amola,Mandrone) 和一个春天 (Grostè) 中收集.
- 分析了10种目标化合物,包括pyrifos (CPY),pyrifos-methyl (CPY-m),galaxolide (HHCB),tonalide (AHTN), (Flu), (Phen), (Ant), (Fl),pyrene (Pyr) 和benzo[a]anthracene (BaA) 等.
- 气色谱与质谱学 (GC-MS) 结合使用气色谱来量化水生幼虫 (chironomids,tipulids) 和甲虫虫中的这些化合物的组织度.
主要成果:
- 在所有采样地点,在水生幼虫和虫中检测到杀虫剂,合成香料和PAH.
- 组织度在1.1 ± 0.1 ng/g干重 (CPY-m在Diamesa tonsa) 到68.0 ± 9.1 ng/g干重 (Pyr在Diamesa steinboecki) 之间.
- 银化物 (HHCB) 和化物 (AHTN) 被水生昆虫和虫广泛积累,与相比,在虫中观察到的度更高,表明有机转移.
结论:
- 该研究证实了阿尔卑斯山淡水生态系统受到一系列合成有机污染物的污染.
- 水生无脊椎动物及其陆地捕食者积累了这些异生菌,突出了对食物网的潜在风险.
- 环境污染水平和特定地点的因素影响污染物积累,有证据表明水生捕食者向河岸捕食者转移食物.
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