Astm D5705 - Pdf

The method outlines a specific field-screening procedure to determine the concentration of hydrogen sulfide gas that desorbs from a liquid fuel sample into an enclosed headspace. It is explicitly designed for residual fuel oils, including: Bunker C fuels Blended heavy marine fuels

ASTM D5705, officially titled "Standard Test Method for Measurement of Hydrogen Sulfide in the Vapor Phase Above Residual Fuel Oils," is a field test method for measuring H₂S in the equilibrium headspace (vapor phase) above a residual fuel oil sample. Developed by ASTM International (formerly the American Society for Testing and Materials), this standard provides a simple, consistent, and rapid method for assessing the H₂S concentration that may be present in storage tank headspaces.

This method is classified as a field-screening test. It provides a rapid, cost-effective assessment but lacks the extreme precision of sophisticated laboratory techniques like gas chromatography. astm d5705 pdf

The ASTM D5705 test method is specifically engineered as a rapid, field-ready screening tool [1]. It is designed to evaluate the equilibrium or near-equilibrium concentration of H2Scap H sub 2 cap S

To ensure repeatable and reproducible results, the standard mandates tight control over the following variables: The method outlines a specific field-screening procedure to

Marine fuel specifications (such as ISO 8217 ) place strict limits on vapor-phase H2Scap H sub 2 cap S content to protect cargo integrity and vessel safety. Summary of the Test Method Procedure

Individual PDFs or annual subscriptions can be purchased directly from astm.org. This method is classified as a field-screening test

While liquid-phase measurements (like ASTM D7621 ) are better for quality control, vapor-phase measurements are the standard for assessing immediate health and safety risks during fuel handling.