ж青中多环芳烃荧光特征及其浓度梯度下的 响应机制硏究

Title

ж青中多环芳烃荧光特征及其浓度梯度下的 响应机制硏究

 Author

Xiao, Yue (Chang'an University; Wuhan University of Technology)
Mr. Wu, R.W. (TU Delft Pavement Engineering; Wuhan University of Technology)
Chang, Xi Wen (Wuhan University of Technology)
Liu, X. (TU Delft Pavement Engineering)
Leng, Zhen (The Hong Kong Polytechnic University)

Date

2023

 Abstract

Polycyclic Aromatic Hydrocarbons (PAHs) in asphalt materials is a type of serious environmental hazard, and the main pollution resource in road engineering. Aiming at the requirement of PAHs rapid detection method in asphalt pavement construction for low environmental hazard, this research concentrated in experiments about PAHs content, fluorescence characteristics, solvent environment impact mechanism and correlation between fluorescence intensity and concentration in different asphalt materials, based on the fluorescence effect of PAHs from condensed ring structure. It is found that coal tar asphalt has a typical aggregation-caused quenching phenomenon and higher fluorescence quantum efficiency. Taking the three solvent environment parameters polarity, viscosity and pH value as the research objects, the optimal solvent environment for the fluorescence phenomenon of PAHs in asphalt materials was explored and established as dimethyl sulfoxide: tetrahydrofuran: deionized water: glycerol = 1 : 1 : 1 : 2. Under the optimal solvent environment, fluorescence intensity and concentration of the three asphalt materials all showed obvious linear relationship. Under the same concentration condition, fluorescence intensity of asphalt material showed positive correlation with the PAHs content. This study proves that the asphalt material has the linear relationship between fluorescence intensity and PAHs concentration, which will provide theoretical basis for the detection of PAHs content in asphalt materials, and support the development of low environmental hazard in construction technology for road engineering.


 Subject

asphalt material
fluorescence spectra
pavement engineering
polycyclic aromatic hydrocarbons
rapid detection of concentration
response equation

 To reference this document use:

http://resolver.tudelft.nl/uuid:b132f7e3-72ee-456c-8c85-9d5bed79f6ee

 DOI

https://doi.org/10.19721/j.cnki.1001-7372.2023.12.013

 Embargo date

2024-05-01

 ISSN

1001-7372

 Source

Zhongguo Gonglu Xuebao/China Journal of Highway and Transport, 36 (12), 171-182

 Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2023 Yue Xiao, R.W. Mr. Wu, Xi Wen Chang, X. Liu, Zhen Leng
Files
PDF Fluorescence_Characterist ... ations.pdf 3.63 MB
Close viewer