Abstract：
Materials in car cabins contain performance-enhancing semi-volatile organic compounds (SVOCs). As these SVOCs are not chemically bound to the materials, they can emit from the materials at slow rates to the surrounding, causing human exposure. This study aimed at increasing the understanding on abundance of SVOCs in car cabins by studying 18 potential endocrine disrupting chemicals in car cabin air (gas phase and airborne particles) and dust. We also studied how levels of these chemicals varied by temperature inside the car cabin along with ventilation settings, relevant to human exposure. A positive correlation was observed between temperature and SVOC concentration in both the gas and the particle phase, where average gas phase levels at 80 °C were a factor of 18-16,000 higher than average levels at 25 °C, while average particle phase levels were a factor of 4.6-40,000 higher for the studied substances. This study also showed that levels were below the limit of detection for several SVOCs during realistic driving conditions, i.e., with the ventilation activated. To limit human exposure to SVOCs in car cabins, it is recommended to ventilate a warm car before entering and have the ventilation on during driving, as both temperature and ventilation have a significant impact on SVOC levels.
摘要：
车厢内的材料含有提高性能的半挥发性有机化合物(SVOCs)。由于这些SVOCs未与材料化学结合，它们可以以缓慢的速度从材料中散发到周围，导致人类暴露。这项研究旨在通过研究车厢空气（气相和空气中的颗粒）和灰尘中18种潜在的内分泌干扰化学物质，来增加对车厢中SVOCs丰度的理解。我们还研究了这些化学物质的含量如何随车厢内的温度以及通风设置而变化，与人类接触有关。在气体和颗粒相中的温度和SVOC浓度之间观察到正相关，80°C时的平均气相水平比25°C时的平均水平高18-16,000倍，而所研究物质的平均颗粒相水平高出4.6-40,000倍。这项研究还表明，在实际驾驶条件下，几种SVOCs的水平低于检测限，即，通风激活。为了限制人类在汽车舱内接触SVOCs，建议在进入前给温暖的汽车通风，并在驾驶过程中打开通风，因为温度和通风对SVOC水平都有显著影响。
