PHOTOOXIDATION OF DIMETHYLSULFIDE IN AQUEOUS-SOLUTION
PHOTOOXIDATION OF DIMETHYLSULFIDE IN AQUEOUS-SOLUTION
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DOI：
10.1016/0304-4203(86)90055-1
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发表时间：
1986-09-01
期刊：
影响因子：
3
通讯作者：
SHOOTER, D
中科院分区：
文献类型：
--
作者：
BRIMBLECOMBE, P;SHOOTER, D
二甲基硫化物（DMS）在微摩尔量的光敏剂如亚甲基蓝、玫瑰红、蒽醌和腐植酸的存在下容易光氧化。每消耗1摩尔分子氧，就会氧化2摩尔DMS，氧化产物为二甲基亚砜。沿海海水样本含有足够的天然光敏剂，可在阳光下光氧化DMS，一级速率常数为2.4倍。纯s - 1。这个速度足够快，意味着DMS的氧化速度与它在大气中的损失速度大致相同。
Dimethylsulphide (DMS) is readily photo-oxygenated in the presence of micromolar amounts of photosensitizers such as methylene blue, rose bengal, anthroquinone and humic acid. Two moles of DMS are oxidized for every mole of molecular oxygen utilized consistent with dimethyl-sulphoxide being the oxidation product. Coastal seawater smaples examined contained sufficient naturally occurring photosensitizer to photo-oxygenate DMS in sunlight with a first order rate constant of 2.4 .times. 10-5 s-1. This rate is rapid enough to imply that DMS is oxidized at approximately the same rate as it is lost to the atmosphere.