Title: Analysis of chromium in amine/glycol solutions
Description: A procedure has been developed for analyzing chromium in the amine/glycol gas-treating solution from the Exell Helium Plant in Masterson, Texas. The amine/glycol solution is used to remove carbon dioxide and water from the plant's feed stream. Chemical analysis of the solution is difficult because of its water-soluble organic compound content, alkalinity, viscosity, and solids content. The procedure involves two-stage dilution of the sample with water, followed by graphite furnace atomic absorption analysis for chromium content. The effects of solution viscosity, particulates, acid digestion, and other impurities are documented.
Subjects: Helium, Purification, Gases, Chromium, Amines