从消费产品释放到湖水中的PCB无意中产生的实验室调查
Molly Frauenheim1, Xiaoyu Liu2, Katherine Woodward3
1Oak Ridge Institute for Science and Education Postdoctoral Fellow at the US Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modeling, Research Triangle Park, NC 27711, USA.
Journal of hazardous materials
|January 9, 2026
概括
在消费品中发现了意外产生的多双 (PCB),特别是那些含有色素的消费品. 大多数PCB仍然与产品结合,在水中漏最小,表明环境释放潜力较低.
科学领域:
- 环境化学环境化学
- 消费者产品安全 产品安全
- 毒理学 毒理学 毒理学
背景情况:
- 多双 (PCB) 由于无意生产而在环境中持续存在,特别是在颜料制造中.
- 消费品可能是这些污染物的来源,对儿童等弱势群体构成风险.
研究的目的:
- 调查各种消费品中意外产生的PCB (iPCB) 的存在.
- 评估这些产品中的iPCBs的漏行为和环境释放潜力.
主要方法:
- 用溶剂提取和气体染色学/质谱学分析了114种PCB-11的消费品类型.
- 在不同的条件下 (持续时间,液体/固体比率) 对代表性产品进行实验室批量液试验.
主要成果:
- 在114种产品中,PCB-11在7种产品中被检测到,其中色物品的度最高.
- 不到10%的总PCB质量被浸出到水中,剩下的大部分被吸附到产品矩阵中.
- 根据产品的材料,液的分泌有所不同,泡释放率低,纤维板/释放率高.
结论:
- 消费品,特别是含有色素的消费品,可能是PCB的意外来源.
- 这些产品中PCB的环境释放量通常很低,但受产品成分和环境条件的影响.
- 了解产品矩阵对于准确的暴露和iPCBs的风险评估至关重要.
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