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开发一种测量方法,以估计在任何温度下与源材料表面平衡的SVOCs气相度
Benoit Schmitt1, Tamara Braish1, Mélanie Nicolas2
1Scientific and Technical Center for Building (CSTB), Health and Comfort Department, Saint-Martin-d'Hères, 38400, France; IPREM, IMT Mines Alès, Universite de Pau et des Pays de l'Adour, CNRS, Pau, 64000, France.
Chemosphere
|July 18, 2025
概括
本研究量化了来自常见材料发出的有毒室内污染物,半挥发性有机化合物 (SVOC) 的气相度. 这些发现为估计室内空气质量和这些无处不在的化学物质对健康的潜在风险提供了关键数据.
科学领域:
- 环境化学环境化学
- 室内空气质量 室内空气质量
- 毒理学 毒理学 毒理学
背景情况:
- 半挥发性有机化合物 (SVOC) 是来自各种材料的普遍室内污染物.
- 准确估计SVOC排放需要了解与材料表面 (y0) 均衡的气相度.
- 对于许多SVOC,特别是来自特定室内材料的现有数据是有限的.
研究的目的:
- 为了确定25°C的气相度 (y0) 甲酸盐,有机酸盐和DINCH从乙烯基地板,PVC涂层织物和PU泡中排放.
- 使用克劳西乌斯-克莱佩隆关系,建立y0和温度 (T) 之间的经验关系.
- 用实验数据验证外推的y0值,并评估实验参数的影响.
主要方法:
- 在微室/热抽取器 (M-CTE) 中,从乙烯基地板,PVC涂层织物和PU泡中排放SVOC.
- 在各种高温下测量了气相度.
- 应用了克劳西乌斯-克莱佩隆关系以估计y0在每个温度下,然后推断到25°C.
主要成果:
- 大多数SVOC在25°C时的额外推算的y0值低于1μg m−3.3.
- 报告了DnOP,TPP和EHDPP的新数据,而DiNP,TCPP,TDCPP和DINCH的值与现有文献保持一致.
- 该方法表明,在细胞中提升材料可以快速可靠地估计y0.0.
结论:
- 开发的方法允许在任何相关温度下估计y0,有助于对暴露场景的评估.
- 该研究提供了关键室内SVOC的基本排放数据,有助于改善室内空气质量建模.
- 这些发现突出了估计SVOCs气相度的潜力,这对于理解室内污染物动态至关重要.
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