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从人体中量化臭氧依赖的挥发性有机化合物排放量

Yuekun Qu¹, Ziwei Zou², Charles J Weschler^3,4

¹Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, People's Republic of China.

Environmental science & technology

|August 23, 2023

概括

人体皮肤表面释放由臭氧影响的挥发性有机化合物 (VOC). 这项研究量化了VOC排放量,发现大多数化合物与臭氧的线性关系,这对于室内空气质量模型至关重要.

科学领域:

环境化学环境化学
室内空气质量室内空气质量
人类暴露科学科学人类暴露科学

背景情况:

人体皮肤上的臭氧反应产生挥发性有机化合物 (VOC),影响室内空气质量.
人类表面的臭氧度和VOC排放之间的关系尚不清楚.

研究的目的:

调查从人体表面的VOC排放流与不同臭氧度之间的依赖性.
量化皮肤油氧化产品的排放参数,以改善室内空气质量模型.

主要方法:

对3名志愿者进行了36次单人室实验.
参与者接触到臭氧度范围从0到32ppb.
测量了11个向的皮肤油氧化产品的排放流.

主要成果:

大多数向的VOC排放流与臭氧度呈现线性相关性,表明表面产量恒定.
在臭氧水平升高的情况下,4-oxopentanal表现出更高的表面产量.
即使在没有臭氧的情况下 (基线排放) 也观察到大量的VOC排放量.

结论:

人体的臭氧依赖的VOC排放可以通过表面产量和基线排放流量进行参数化.
量化参数有助于将皮肤油化学纳入室内空气质量模型.
提供了对皮肤油氧化和VOC生成的复杂化学过程的新见解.

关键词:

挥发性有机化合物挥发性有机化合物风险暴露风险暴露风险暴露室内室内室内室内室内室内臭氧溶解是一种臭氧溶解.斯卡瓦林酸盐是一种酸盐.

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