2017GB/T 5195.5-2017 Fluorspar—Determination of total sulfur content—Pipe furnace combustion iodic acid potassium titration method
2006GB/T 5195.5-2006 Fluorspar. Determination of total sulfur content. The iodometric method after combustion
1985GB/T 5195.5-1985 Methods for chemical analysis of fluor-spar--The combustion-potassium iodate volumetric method for the determination of total sulphur content