https://www.epa.gov/esam/us-epa-method-3051a-microwave-assisted-acid-digestion-sediments-sludges-and-oils
U.S. EPA Method 3051A: Microwave Assisted Acid Digestion of Sediments, Sludges, and Oils | US EPA
Jun 30, 2025 - SAM lists this method for preparation of solid samples to be analyzed for arsenic, osmium, thallium, titanium and vanadium.