二甲基硫醚的光解特性

doi:10.7517/j.issn.1674-0475.1996.04.298

影像科学与光化学 ›› 1996, Vol. 14 ›› Issue (4): 298-305.DOI: 10.7517/j.issn.1674-0475.1996.04.298

二甲基硫醚的光解特性

杨文襄¹, 钟晋贤¹, 牟玉静¹, 王淑琴¹, 陈大舟²

1. 中国科学院生态环境研究中心, 北京100085;
2. 中国标准物质研究中心, 北京100013

收稿日期:1995-11-01 修回日期:1996-06-19 出版日期:1996-11-20 发布日期:1996-11-20
通讯作者: 杨文襄
基金资助:
国家自然科学基金

STUDY ON THE CHARACTERS OF PHOTOLYSIS OF DIMETHYL SULFIDE

YANG Wenxiang¹, ZHONG Jinxian¹, MU Yijing¹, WANG Suxing¹, CHEN Dazhou²

1. Research Center for Eco-Environmental Sciences, The Chinese Academy of Sciences, Beijing 100085, P. R. China;
2. Research Center for Standard Material of China, Beijing 100013, P. R. China

Received:1995-11-01 Revised:1996-06-19 Online:1996-11-20 Published:1996-11-20

摘要/Abstract

摘要： 本文对二甲基硫醚(DMS)在有氧、无氧及有H₂O₂存在的情况下紫外光辐照。然后在20m长光程池中藉富里叶红外光谱仪测定光解产物的吸收光谱。实验表明在无氧的情况下DMS的C─S键断裂,并生成CH₃SSCH₃及C₂H₆,在有氧存在下生成HCHO及CH₃SO₃H,在有H₂O₂存在下生成CH₃SSCH₃.本文讨论了光解的可能机理,合理地解释光解产物的生成。

关键词: 二甲基硫醚, 富里叶红外光谱, 紫外光解

Abstract: The dimethyl sulfide(DMS) was irradiated by UV in the absence or presence of O₂ and H₂O₂.The products of photolysis were detected by a Fourier Transform Infrared Spectroscopy equipped with a 20m long path cell. The results indicate that the C─S bond of DMS could be broken in the absence of O₂. As a result, CH₃SSCH₃ and CH₃CH₃ compounds were formed. In the case of presence of O₂ in the system,CH2O and CH₃SO_H could be formed. If H₂O₂ presents in the system, the products of photolysis of DMS would be CH₃SO₃H and CH₃SSCH₃. The mechanism of photolysis of DMS has been discussed. According to this mechanism, the formation of products can be explained.

Key words: dimethyl sulfide, FTIR, UV photolysis

杨文襄, 钟晋贤, 牟玉静, 王淑琴, 陈大舟. 二甲基硫醚的光解特性[J]. 影像科学与光化学, 1996, 14(4): 298-305.

YANG Wenxiang, ZHONG Jinxian, MU Yijing, WANG Suxing, CHEN Dazhou. STUDY ON THE CHARACTERS OF PHOTOLYSIS OF DIMETHYL SULFIDE[J]. Imaging Science and Photochemistry, 1996, 14(4): 298-305.

二甲基硫醚的光解特性

STUDY ON THE CHARACTERS OF PHOTOLYSIS OF DIMETHYL SULFIDE

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