沉积物和废水处理厂产生的生物固体中的传统和新兴阻燃剂
Martin Sharkey1, Shijie Wang2, Stuart Harrad2
1Physics, School of Natural Sciences, University of Galway, Galway City H91 CF50, Ireland.
The Science of the total environment
|October 1, 2024
概括
在爱尔兰的沉积物和生物固体中评估了阻燃化学物质,包括多二 (PCB) 和有机酸 (Cl-OPE). 虽然大多数PCB的含量很低,但BDE-209和Cl-OPE的含量很高,在沉积物中存在中等至高风险.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 环境科学 环境科学
背景情况:
- 阻燃化学品被广泛使用,导致环境污染.
- 遗留的污染物如多二 (PCB) 和多二乙烯 (PBDE) 在环境中持续存在.
- 新出现的污染物,如化有机酸盐 (Cl-OPEs),越来越多地被检测到,需要进行评估.
研究的目的:
- 在爱尔兰沉积物和生物固体中对传统和新兴阻燃化学品进行基线评估.
- 在各种环境矩阵中量化PCB,PBDE和Cl-OPE的含量.
- 根据预测无效度 (PNEC) 来评估这些污染物所带来的环境风险.
主要方法:
- 在沉积物和生物固体样本中对24种目标化合物 (PCB,PBDE,Cl-OPE) 的量化.
- 收集81个内陆和过渡沉积物样本 (2023) 和39个过渡沉积物样本 (2018-2022).
- 在2023年多次间隔对7个废水处理厂 (WWTP) 的21个生物固体样本进行分析.
主要成果:
- 在沉积物和生物固体样本中发现了BDE-209和几个Cl-OPE的最高度.
- 在爱尔兰样本中检测到PCB和penta-/octa-BDE的水平相对较低.
- 沉积物中PBDE和Cl-OPEs的中等水平,生物固体中的BDE-209和Cl-OPEs是国际上报告的最高水平之一.
结论:
- 沉积物中的TCIPP,EHDPP,TEHP,PCB-118和PCB-52存在中等至高风险.
- 生物固体表现出高水平的BDE-209和Cl-OPEs,需要进一步调查.
- 由于这些阻燃剂的持久性和新出现的担忧,建议继续监测和评估食物链污染.
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