Issue 8, 2019

Emissions of DEHP from vehicle cabin materials: parameter determination, impact factors and exposure analysis

Abstract

Semi-volatile organic compounds (SVOCs) are widely used in materials employed in vehicle interiors, causing poor in-cabin air quality. The emission characteristics of SVOCs from vehicle cabin materials can be characterized by two key parameters: the gas-phase SVOC concentration adjacent to the material surface (y0) and the convective mass transfer coefficient across the material surface (hm). Accurate determination of y0 and hm is fundamental in investigating SVOC emission principles and health risks. Considering that the steady state SVOC concentration (y) in a ventilated chamber changes with the ventilation rate (Q), we developed a varied ventilation rate (VVR) method to simultaneously measure y0 and hm for typical vehicle cabin materials. Experimental results for di(2-ethylhexyl)phthalate (DEHP) emissions from test materials indicated that the VVR method has the merits of simple operation, short testing time, and high accuracy. We also examined the influence of temperature (T) on y0 and hm, and found that both y0 and hm increase with increasing temperature. A theoretical correlation between y0 and T was then derived, indicating that the logarithm of y0T is linearly related to 1/T. Analysis based on the data from this study and from the literature validates the effectiveness of the derived correlation. Moreover, preliminary exposure analysis was performed to assess the health risk of DEHP in a vehicular environment.

Graphical abstract: Emissions of DEHP from vehicle cabin materials: parameter determination, impact factors and exposure analysis

Supplementary files

Article information

Article type
Paper
Submitted
28 apr. 2019
Accepted
25 jún. 2019
First published
01 júl. 2019

Environ. Sci.: Processes Impacts, 2019,21, 1323-1333

Emissions of DEHP from vehicle cabin materials: parameter determination, impact factors and exposure analysis

T. Yang, Z. He, S. Zhang, L. Tong, J. Cao and J. Xiong, Environ. Sci.: Processes Impacts, 2019, 21, 1323 DOI: 10.1039/C9EM00200F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements