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Curve Analysis of Airborne BTEX Concentration in Vehicles

  • Daocong Qin
  • Jie Hu
  • Bing Guo
  • Xiaokai ChenEmail author
Conference paper
  • 236 Downloads
Part of the Environmental Science and Engineering book series (ESE)

Abstract

Benzene, toluene, ethylbenzene and xylenes (BTEX) lead to cabin air pollution, which is harmful to passengers and drivers. In order to decrease the harm, the BTEX attenuation with time is analyzed by monitoring the BTEX concentrations in 38 vehicles with Air Sampler and Gas Chromatograph and by the curve estimation regression with the SPSS statistical software. Results show that the optimum attenuation curve between the BTEX pollution (y) and time (x) is a cubic equation with one variable, in which \(y_{\text{benzene}} = {-}0.004x^{3} + 0.228x^{2} {-}5.787x + 130.803\), \(y_{\text{toluene}} = {-}0.007x^{3} + 0.451x^{2} {-}12.510x + 326.425\), \(y_{\text{ethyl benzene}} = {-}0.003x^{3} + 0.212x^{2} {-}5.345x + 118.780\) and \(y_{\text{xylenes}} = {-}0.008x^{3} + 0.505x^{2} {-}12.777x + 289.001\). When the BTEX pollution is zero, the attenuation time is 3.4–4.2 years. The BTEX diffusion from in-vehicle materials can last for several years so that the BTEX attenuation and control is a long-term process.

Keywords

IAQ Benzene Toluene Ethylbenzene xylenes Vehicle cabins 

Notes

Acknowledgements

The project is supported by the National Natural Science Foundation of China (Number 51568026).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Institute of Building Environment & Energy ApplyingCollege of Civil Engineering, Kunming University of Science and TechnologyKunmingChina

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