HALOGEN ATOM REACTIONS: I. THE ELECTRICAL DISCHARGE AS A SOURCE OF HALOGEN ATOMS

Abstract

A number of surface poisons have been found to prevent the rapid recombination of chlorine, bromine, and iodine atoms. Hence these atoms can now be obtained in large concentrations in a flow system.A chemical titration procedure for both Cl and Br atoms has been developed and has been used to test an isothermal calorimetric detector which can measure the atom concentration along a reaction tube. The detector was used to establish the surface recombination coefficient (γ) for chlorine atoms (4 × 10 −5 ) and bromine atoms (6 × 10 −5 ) on oxyacid-covered surfaces.