| 放射示踪法研究O2存在时14CS2与OH的光化学反应 |
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| 引用本文： | 杨文襄,R.S.Iyer,F.S.Rowland.放射示踪法研究O2存在时14CS2与OH的光化学反应[J].环境科学学报,1988,8(2):131-138. |
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| 作者姓名： | 杨文襄 R.S.Iyer F.S.Rowland |
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| 作者单位： | 中国科学院生态环境研究中心，美国加州大学尔湾分校化学系，美国加州大学尔湾分校化学系 北京 |
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| 摘 要： | 用放射示踪法研究~(14)CS_2和OH的光化学反应,指出氧对反应有促进作用,在反应体系中(~(14)CS_2-H_2O_2-C_3H_8-N_2-O_2)主要产物为O~(14)CS,~(14)CO及少量~(14)CO_2。O~(14)CS和~(14)CO有相似的动力学曲线,~(14)CO_2则是另一种情况。总反应速率常数随氧压增加而增大,在氧压为33330Pa时,~(14)CS_2消失的总速率常数可高达3.4×10~(-12)cm~3mol~(-1)S~(-1)。在实验中观察到~(14)CS_2能在室温下转变为~(14)CO_2的现象。讨论了光化学反应的历程。
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| 关 键 词： | ~(14)CS_2 OH 光化学反应 动力学 |
| 收稿时间： | 1987/6/10 0:00:00 |
RADIOACTIVE TRACER STUDY ON THE PHOTOCHEMICAL REACTION OF 14CS2 WITH OH IN THE PRESENCEOF O2 |
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| Yang Wenxiang,R. S. Iyer and F. S. Rowland.RADIOACTIVE TRACER STUDY ON THE PHOTOCHEMICAL REACTION OF 14CS2 WITH OH IN THE PRESENCEOF O2[J].Acta Scientiae Circumstantiae,1988,8(2):131-138. |
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| Authors: | Yang Wenxiang R S Iyer and F S Rowland |
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| Institution: | Research Center for Eco-Environmental Sciences, Academia Sinica,Department of Chemistry, University of California, Irvine and Department of Chemistry, University of California, Irvine |
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| Abstract: | 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. |
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| Keywords: | ~(14)CS_2 OH photochemical reaction kinetics |
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