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首页> 外文期刊>Building and Environment >Measuring whole-body volatile organic compound emission by humans: A pilot study using an air-tight environmental chamber
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Measuring whole-body volatile organic compound emission by humans: A pilot study using an air-tight environmental chamber

机译：测量人体的全身挥发性有机化合物排放量：使用气密环境箱进行的初步研究

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摘要

Volatile organic compounds (VOCs) emitted from the human body are an important source of bioeffluents to indoor environments. A mid-sized (2m x 2m x 2m), air-tight environmental chamber was used to measure VOC emissions from the whole body of each participant. Air tightness, homogeneity, adsorption, and desorption were controlled to satisfy the requirements of the experiment. Background concentrations of VOCs and ozone were maintained at a low level. To estimate human emission rates, the VOC concentrations of the chamber's air and of exhaled breath were collected by Tenax-TA tubes and analyzed through gas chromatography-mass spectrometry. Fourteen healthy participants enrolled in the pilot experiment. The chemical components of volatile emissions from the breath and the whole body of participants were found to be similar. The average emission rate of total VOC (TVOC) from the whole-body was 742.8 mu g/h (SD = 464.7 mu g/h), while the average TVOC emission rate from the breath samples was 41.4 mu g/h (SD = 11.7 mu g/h). In addition, the VOCs detected in the whole-body analyses were mainly alkanes with 3-6 carbons, while the VOCs detected in the breath sample analyses were primarily acetone and isoprene. In comparison with previous studies, the detected VOC types were mostly consistent, but the specific compounds varied. Moreover, the emission rates of very volatile organic compounds (VVOCs) were lower in this study, whereas the aromatics were on the same order of magnitude.
机译：人体排放的挥发性有机化合物（VOC）是向室内环境排放生物废水的重要来源。使用中型（2m x 2m x 2m）气密环境室测量每个参与者全身的VOC排放量。控制气密性，均质性，吸附和解吸以满足实验要求。 VOC和臭氧的背景浓度保持在较低水平。为了估算人的排放率，通过Tenax-TA管收集室内空气和呼出气的VOC浓度，并通过气相色谱-质谱法进行分析。十四名健康参与者参加了试验性实验。呼吸和整个参与者的身体中挥发性物质的化学成分相似。全身总VOC（TVOC）的平均排放率为742.8μg / h（SD = 464.7μg / h），而呼气样气的平均TVOC排放率为41.4μg / h（SD = 11.7克/小时）。此外，在全身分​​析中检测到的VOCs主要是具有3-6个碳的烷烃，而在呼气样品分析中检测到的VOCs主要是丙酮和异戊二烯。与以前的研究相比，检测到的VOC类型基本一致，但具体化合物有所不同。此外，在这项研究中，极易挥发的有机化合物（VVOC）的排放速率较低，而芳烃的排放量处于相同的数量级。

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