Determination of Total Sulphur and Chloride in Solid Biomass Fuel by Tube Furnace Combustion-Ion Chromatography

A tube furnace combustion-ion chromatography method for the determination of total sulfur and chlorine in biomass solid fuel were established. Taking 0.15% hydrogen peroxide as absorption liquid, the sulfide of the sample is converted into sulfate ion after combustion. The total sulfur and chlorine content in the biomass solid fuel is determined by ion chromatography. Under the optimized chromatographic conditions, the detection limit of sulfate ion chromatography is 3.1 mg / kg and the detection limit of chlorine is 4.6 mg/kg with the linear relationship in the range of 0.05-10.00 mg/L. The relative standard deviation of precision and repeatability is less than 5%, the average recovery of total sulfur and chlorine were 97.9% and 96.6%. This method is simple, rapid and reproducible. It can be used for the determination of total sulfur and chlorine in biomass solid fuel.