Effect of heating appliance type on parr bomb temperature response performance

Abstract

Stainless-steel and Teflon acid digestion bombs are designed for the dissolution of relatively inert and/or volatile substances by reaction with a solvent at elevated temperatures and pressures. This is accomplished by heating the loaded bombs, usually in a laboratory drying oven or furnace. It has been demonstrated that because of performance differences between different heating appliances, inside-bomb temperature increases with time can differ markedly even when the various heating devices are set for the same temperature. Because most reactions are temperature dependent, performance differences between heating appliances can significantly affect dissolution times for given applications. The effect of heating appliance type on the dissolution of native sulphur by oxidation with concentrated nitric acid is examined.