HIGH-RESOLUTION MASS SPECTROMETIC STUDY OF WEATHERED ROAD TARS

FRACTIONS OF ROAD TARS OF COKE-OVEN AND VERTICAL RETORT ORIGIN WERE EXAMINED BY HIGH-RESOLUTION MASS SPECTROMETRY BEFORE AND AFTER EXPOSURE TO ROAD CONDITIONS. MOLECULAR FORMULAE AND RELATIVE CONCENTRATIONS WERE DETERMINED FOR ELEVEN SERIES OF PEAKS. A PROGRESSIVE INCREASE IN THE PROPORTION OF COMPONENTS OF HIGH MOLECULAR WEIGHT (GREATER THAN MASS 200) WAS INDICATED WITH EXPOSURE TO ROAD CONDITIONS. IN THE HIGH MOLECULAR-WEIGHT RANGE, THE HETEROCYCLIC STRUCTURES CONTAINING OXYGEN SHOWED LARGER INCREASES THAN THE POLYNUCLEAR AROMATIC HYDROCARBONS. /TRRL/

• Authors:
  • Schultz, J L
  • Sharkey, A G
  • Friedel, R A
• Publication Date: 1970-4

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 126-8
• Serial:
  • Journal of Applied Chemistry & Biotechnology
  • Volume: 20
  • Issue Number: 4
  • Publisher: Society of Chemical Technology

Subject/Index Terms

• TRT Terms: Age; Chemical analysis; Coking; Electromagnetic spectrum; Hydrocarbons; Mass spectrometers; Molecular weight; Tar; Weathering
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00211319
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: TRIS
• Created Date: Apr 17 1973 12:00AM