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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Evaluation of Volatile Organic Compounds and Carbonyl Compounds Present in the Cabins of Newly Produced Medium- and Large-Size Coaches in China
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Evaluation of Volatile Organic Compounds and Carbonyl Compounds Present in the Cabins of Newly Produced Medium- and Large-Size Coaches in China

机译：中国新型大中型客车客舱中挥发性有机化合物和羰基化合物的评价

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摘要

An air-conditioned coach is an important form of transportation in modern motorized society; as a result, there is an increasing concern of in-vehicle air pollution. In this study, we aimed to identify and quantify the levels of volatile organic compounds (VOCs) and carbonyl compounds (CCs) in air samples collected from the cabins of newly produced, medium- and large-size coaches. Among the identified VOCs and CCs, toluene, ethylbenzene, xylene, formaldehyde, acetaldehyde, acrolein/acetone, and isovaleraldehyde were relatively abundant in the cabins. Time was found to affect the emissions of the contaminants in the coaches. Except for benzaldehyde, valeraldehyde and benzene, the highest in-vehicle concentrations of VOCs and CCs were observed on the 15th day after coming off the assembly line, and the concentrations exhibited an approximately inverted U-shaped pattern as a function of time. Interestingly, this study also showed that the interior temperature of the coaches significantly affected the VOCs emissions from the interior materials, whereas the levels of CCs were mainly influenced by the relative humidity within the coaches. In China, guidelines and regulations for the in-vehicle air quality assessment of the coaches have not yet been issued. The results of this study provide further understanding of the in-vehicle air quality of air-conditioned coaches and can be used in the development of both specific and general rules regarding medium- and large-size coaches.
机译：空调大客车是现代机动社会中的一种重要交通方式。结果，越来越关注车载空气污染。在这项研究中，我们旨在鉴定和量化从新生产的中型和大型客车舱室收集的空气样本中的挥发性有机化合物（VOCs）和羰基化合物（CCs）的水平。在确定的VOC和CC中，舱室内甲苯，乙苯，二甲苯，甲醛，乙醛，丙烯醛/丙酮和异戊醛相对丰富。发现时间会影响教练车中污染物的排放。除苯甲醛，戊醛和苯外，在下线后第15天车内VOCs和CCs的浓度最高，并且随时间呈近似倒U形分布。有趣的是，这项研究还表明，客车的内部温度显着影响了车内材料的VOC排放，而CC的水平主要受客车内相对湿度的影响。在中国，尚未发布有关教练的车内空气质量评估的指南和规定。这项研究的结果进一步了解了空调教练的车内空气质量，可用于制定有关中型和大型教练的具体规则和一般规则。

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