V2EX photodissociation

Photodissociation

Definition 定义

photodissociation(光解/光致解离):指分子吸收光子(通常是紫外光)后,化学键断裂而分解成更小的片段(如原子、自由基或更小分子)的过程。常见于大气化学、天体化学与光化学反应中。

Pronunciation 发音

/fotodsosien/

Examples 例句

Photodissociation can break water molecules into hydrogen and oxygen.
光解作用可以把水分子分解成氢和氧。

In the upper atmosphere, photodissociation of ozone and other gases strongly influences the chemical balance and the amount of UV radiation that reaches Earth’s surface.
在高层大气中,臭氧等气体的光解会显著影响化学平衡,并影响到达地表的紫外线辐射量。

Etymology 词源

该词由 **photo-**(“光”,源自希腊语 *phōs/phōt-*,意为“光”)与 dissociation(“解离/分离”,来自拉丁语传统的词根,表达“分开、分离”之意)组合而成,字面意思就是“由光引起的解离”。

Related Words 相关词汇

Literary Works 文学作品

  • Atmospheric Chemistry and Physics: From Air Pollution to Climate Change(Seinfeld & Pandis)
  • Photochemistry and Photophysics: Concepts, Research, Applications(Vincenzo Balzani 等相关领域著作)
  • The Atmosphere: An Introduction to Meteorology(Lutgens & Tarbuck,相关章节讨论光化学过程)
  • IPCC(政府间气候变化专门委员会)评估报告相关章节(涉及大气光化学与辐射过程时会出现该术语)
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