在PVC地板中的传统和新兴塑化剂和稳定剂以及对回收利用的影响
Helene Wiesinger1, Christophe Bleuler2, Verena Christen3
1Chair of Ecological Systems Design, Institute of Environmental Engineering, ETH Zürich, 8093 Zürich, Switzerland.
Environmental science & technology
|January 19, 2024
概括
瑞士的新型PVC地板含有和酸盐等危险化学物质,通常来自回收材料. 这项研究揭示了风险,并呼吁提高塑料成分的透明度,以实现更安全的循环经济.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 材料科学 材料科学 材料科学
背景情况:
- 建筑和建筑塑料通过室内暴露对健康构成风险.
- 回收塑料可能被危险化学物质污染.
- 聚乙烯 (PVC) 地板是一种常见的建筑材料,具有潜在的化学风险.
研究的目的:
- 评估瑞士市场新型PVC地板中危险化学品的存在和含量.
- 调查与这些化学物质相关的潜在健康风险,包括细胞毒性,氧化应激和内分泌干扰.
- 评估回收PVC中化学污染对循环经济的影响.
主要方法:
- 系统抽取151种新的PVC地板产品的样本.
- 使用X射线光 (XRF) 的元素分析.
- 气色谱-质谱学 (GC-MS) 用于针对性和可疑性分析酸盐和可塑剂.
- 对细胞毒性,氧化应激,内分泌,突变性和基因毒性活动进行生物测试.
主要成果:
- 16%的样本超过0.1重量%的受监管化学品,主要是和二甲二甲酸 (DEHP).
- 29%的样本含有超过0.1%重量的其他正甲酸盐 (二松和二二甲酸盐).
- 17%的样本显示出潜在的生物效应;总的来说,35%的样本引起了潜在的关注.
结论:
- 和DEHP等受监管化学品的存在表明,无控制的PVC回收可能会延续危险物质的使用.
- 很大一部分PVC地板含有涉及化学品,需要审查回收实践和材料透明度.
- 需要采取紧急行动,逐步淘汰危险物质,提高塑料的化学透明度,并促进安全,可持续的循环经济.
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