有证据表明,北极地区存在双醇的本地来源和热带生物放大
Xi-Ze Min1,2,3,4, Fei Chen1,2,3, Zhi-Zhong Zhang1,2,3
1International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment/School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
Environmental science and ecotechnology
|November 14, 2025
概括
双 (BPs),内分泌干扰化学物质,在北极食物网中生物积累和生物放大,对野生动物构成风险. 当地污染源加剧了这个问题,突出了在北极风险评估中需要食物网络动态的需要.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 北极研究研究北极研究
背景情况:
- 北极很容易受到化学污染物的影响,例如塑料中使用的内分泌干扰化学物质双 (BPs).
- 在北极食物网中,各种BP的生物积累和生物放大潜力尚不清楚.
- 现有的研究主要记录了BP的存在,而不是它们的生态风险或当地贡献.
研究的目的:
- 在挪威北极的食物网中研究多种双相似物的生物积累和生物放大.
- 确定导致北极地区双污染的当地污染源.
- 评估双所带来的生态风险,考虑到食物网的动态.
主要方法:
- 对来自挪威北极食物网的134个样本中32种双相似物进行了全面分析.
- 从浮游生物到北极熊,在不同的热带水平上量化双醇度.
- 通过对环境样本进行化学分析,识别当地污染源.
主要成果:
- 发现多种双相似物通过北极食物网进行生物积累和生物放大.
- 5,5'-(1-甲基乙烯) bis [(1,1'-双) -2-ol] (BPPH) 显示了最高的热量放大因子 (TMF = 2.3).
- 北极熊的总比斯醇度高达1396 ng g-1 湿重,明显高于较低的营养水平.
- 当地污染源,包括消防训练场和垃圾填埋场的液,被确定为双的贡献者.
结论:
- 这项研究提供了首个证据,证明了极地食物链中多个双的热量放大.
- 当地污染对北极环境中的双醇负担作出了重大贡献.
- 对北极地区的生态风险评估必须整合食物网动态和双的当地来源管理.
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