Continuous Emissions Monitor for Hazardous Air Pollutant Metals

摘要

In prior efforts conducted under the Army's Conventional Ammunition Demilitarization Technology Research and Development Program and sponsored by the Army Defense Ammunition Center, a Multimetal Continuous Emissions Monitor System (MMCEMS) for hazardous air pollutant (HAP) metals was developed by the Naval Air Warfare Center Weapons Division (NAWCWD) at China Lake, California in collaboration with the U.S. Army Tank-automotive and Armaments Command, Armament Research, Development and Engineering Center (TACOM-ARDEC) at Picatinny Arsenal. The MMCEMS is capable of rapid and simultaneous detection of all 14 of the HAP metals targeted by the U.S. Environmental Protection Agency (EPA), plus virtually any metal in the contained periodic table. Under the current ESTCP project, validation of the MMCEMS has been carried out in two separate demonstrations. The first took place at Tooele Army Depot (TEAD), Utah, from May 3-6, 1999, on the stack emissions from an Ammunition Peculiar Equipment (APE) 1236 M1 munitions deactivation incinerator. The incinerator feed was empty 30-mm aluminum cartridge casings containing percussion primers, introduced into the furnace at an average rate of 2000 per hour. The second took place at the Retech Corporation's manufacturing facility at Ukiah, California, from October 14-20, 1999, on the Plasma Arc Hazardous Waste Treatment System (PAHWTS) under development in a separate ESTCP project. The incinerator was fed with surrogate wastes such as cont aminated soil, paint mixtures, oily rags and solvents to investigate the effects of stack-gas moisture on MMCEMS operation. The MMCEMS employs an argon inductively coupled plasma (ICP) spectrometer as an elemental analyzer, a shrouded probe for extracting a stream of stack gas, and a patented sampling interface for plasma sample introduction.