DANSK DS/ISO 15713 PDF

This method is applicable to the measurment of the gaseous fluorides that are entrained in gases carried in stacks or ducts. The total fluoride content is expressed as a mass of total fluorides in mg/m3 stack gas and expressed as HF. The method is applicable to all stacks carrying gases with fluoride concentrations of below 200 mg/m3. It can be used for higher concentrations but then the absorption efficiency of the bubblers has to be checked before the results can be regarded as valid.. The detection limit of the method is estimated as 0.1 mg m-3, based on a sample volume of 100 m3. All compounds that are volatile at the filtration temperature and produce soluble fluoride compounds upon reaction with water are measured by this method.