对新兴OPE发现的生态风险更高,生物修复潜力更低,而不是Beibu湾的传统PCB,中国
Li Zhang1, Lingfang Ni2, Heng Wang3
1Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development, Fourth Institute of Oceanography, MNR, Beihai, 536000, PR China.
Environmental research
|May 28, 2023
概括
新兴的有机酸盐 (OPEs) 对海洋生物的生态风险高于传统的PCB,其生物修复潜力有限. 它们越来越多的使用和环境存在要求对海洋污染控制给予紧急关注.
科学领域:
- 环境化学环境化学
- 海洋生态毒理学 海洋生态毒理学
- 污染物分析 污染物分析
背景情况:
- 有机酸 (OPEs) 越来越多地被用作阻燃剂,引发了人们对海洋生态风险的担忧.
- 聚二 (PCB) 是传统的制阻燃剂,而OPE 是新兴的替代品.
研究的目的:
- 调查贝布湾PCB和OPE的分布,来源,生态风险和生物修复潜力.
- 为了比较传统和新兴阻燃剂在海洋生态系统中的环境行为和影响.
主要方法:
- 在海水和沉积物样本中分析PCB和OPE,这些样本来自贝湾的各个地点.
- 使用主要成分分析,土地利用回归和稳定同位素分析 (δ13C) 来识别来源.
- 沉积物无氧培养实验以评估六个月的生物修复潜力.
主要成果:
- OPE度明显高于海水和沉积物中的PCB度.
- 在内湾和湾口沉积物中主要发现PCB,而OPE显示出不同的分布模式.
- 在沉积物培养中,PCB显示出令人满意的脱,而OPE对海洋生物,特别是藻类和甲类生物的生态威胁低至中等.
结论:
- 与PCB相比,OPE污染在北湾是越来越令人担忧的,因为其度和生态风险比PCB更高.
- 污水,水产养殖和航运被确定为OPE污染的主要来源.
- OPE的有限的生物修复潜力和重大生态风险需要集中注意力和管理策略.
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