RADIOACTIVE TRACER STUDY ON THE PHOTOCHEMICAL REACTION OF 14CS2 WITH OH IN THE PRESENCEOF O2
放射示踪法研究O2存在时14CS2与OH的光化学反应

The photochemical reaction of 14CS2 with OH has been studied. The results indicated that the main products of the reaction were O14CS and 14CO with a small amount of 14CO2 in the reaction system (14CS2-H202 -C3H8-N2-O2) .The reaction was promoted by oxygen. O14CS2 and 14CO had the similar kinetic curves while 14CO, got a different kind. The overall rate constant increased with the increasing of oxygen pressure. The rate constant for the removal of 14CS2 was k1 = 3.4 × 10-12cmimolecule-1s-1 at 33330 Pa O2. The conversion of 14CS2 to 14CO2 at room temperature was observed and the possible mechanism of the photochemical reaction was discussed.