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

Translated title of the contribution: Fluorescence Characteristics of Polycyclic Aromatic Hydrocarbons in Asphalt and Their Fluorescence Changes at Different Concentrations

Yue Xiao*, Rui Wu, Xi Wen Chang, Xue Yan Liu, Zhen Leng

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Downloads (Pure)

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.

Translated title of the contributionFluorescence Characteristics of Polycyclic Aromatic Hydrocarbons in Asphalt and Their Fluorescence Changes at Different Concentrations
Original languageChinese
Pages (from-to)171-182
Number of pages12
JournalZhongguo Gonglu Xuebao/China Journal of Highway and Transport
Volume36
Issue number12
DOIs
Publication statusPublished - 2023

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.

Keywords

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

Fingerprint

Dive into the research topics of 'Fluorescence Characteristics of Polycyclic Aromatic Hydrocarbons in Asphalt and Their Fluorescence Changes at Different Concentrations'. Together they form a unique fingerprint.

Cite this