A 0.100-0.150 g sample is weighed into a ceramic boat and covered with Com-Cat Accelerator (LECO trade name for tungsten oxide compound). The boat is placed in a furnace at a temperature of 1350°C in an oxygen rich atmosphere. Total Sulfur is determined by infrared absorption of evolved sulfur dioxide upon the dry combustion on a LECO Sulfur Determinator, Model No. S144-DR.
(See Method Reference No. 10)