Presentation Profile
ASTM D1840 & D6258 – Easily and Confidently Quantify Aromatics and Dyes in Fuels with One UV-Vis Spectrometer
Currently Scheduled: 10/14/2025 - 8:00 AM - 8:20 AM
Room: Daffodil
Main Author
Liang Zhao - Shimadzu Scientific Instruments
Abstract:
UV-Visible spectrophotometry is critical to laboratories conducting fuel quality assessments due to speed, sensitivity, flexibility, and low costs. Naphthalene contributes to combustion efficiency but is also a known precursor to soot emissions, prompting the development of ASTM D1840. Solvent Red 26 is used to differentiate off-road diesel fuel for tax and regulatory enforcement. ASTM D6258 specifies a second derivative UV-Vis method to confirm presence and concentration. This talk details how UV-Vis spectrophotometry is used for precise execution of both ASTM D1840 and D6258, with detailed method parameters, instrument configuration, derivative spectral processing, and calibration workflows, system reproducibility, and linearity.
