photochemical

简明释义

英[ˌfəʊtəʊˈkemɪkl]美[ˌfoʊtoʊˈkemɪkl]

adj. 光化学的

n. 光催化学物

英英释义

单词用法

同义词

反义词

例句

1.Under the UV-light, effects of oxidants and metal ions on the photochemical reaction of congo red were studied by static method.

在紫外光作用下，采用静态方法研究了氧化剂和金属离子对刚果红光化学反应的影响。

2.Ozone is formed in the stratosphere and mesosphere by photochemical processes.

由于光化过程，在平流层与中层内产生了臭氧。

3.The relationship between the structure and the photochemical properties was also discussed.

并对其结构与光化学性能之间的关系进行了讨论。

4.The photochemical reaction of manganese in seawater and its influencing factors were studied.

对海水中锰的光化学反应及其影响因素进行了研究。

5.A third nonthermal process known as photochemical escape operates on Mars and possibly on Titan.

第三种形式的非热逸过程叫做光化学逃逸，只见于火星，但土卫六也可能存在这种现象。

6.Certain air pollutants become more reactive and form noxious compounds in photochemical reactions.

某些空气污染物在光化学反应中变得活性更强，形成有毒的化合物。

7.Objective: to observe the effects of methylene blue (MB) photochemical treatment on components of plasma and protection of rutin.

目的观察亚甲蓝(MB)光化学效应对血浆成份的影响及芸香苷保护作用。

8.The process of photosynthesis involves several photochemical reactions that convert light energy into chemical energy.

光合作用的过程涉及多个光化学反应，将光能转化为化学能。

9.Many plants rely on photochemical processes to produce essential nutrients.

许多植物依赖于光化学过程来生产必需的营养物质。

10.The study of photochemical reactions is crucial for understanding environmental changes.

研究光化学反应对于理解环境变化至关重要。

11.Sunlight triggers a series of photochemical events in the atmosphere, leading to ozone formation.

阳光在大气中引发一系列光化学事件，导致臭氧的形成。

12.Certain photochemical compounds can help in reducing air pollution.

某些光化学化合物可以帮助减少空气污染。

作文

The concept of photochemical reactions is fundamental to understanding various processes in both nature and technology. In essence, photochemical refers to the chemical reactions that are initiated by light. This phenomenon is not only crucial for the survival of plants through photosynthesis but also plays a significant role in many industrial applications. For instance, the production of certain chemicals and materials relies heavily on photochemical processes. In nature, one of the most prominent examples of photochemical activity is photosynthesis, where plants convert sunlight into energy. During this process, chlorophyll absorbs light, which triggers a series of photochemical reactions that transform carbon dioxide and water into glucose and oxygen. This process is vital for life on Earth, as it provides the oxygen we breathe and forms the base of the food chain. Without photochemical reactions, life as we know it would not exist. Moreover, photochemical reactions are not limited to biological systems; they are also prevalent in environmental chemistry. For example, the formation of smog in urban areas is largely due to photochemical reactions involving pollutants and sunlight. When sunlight interacts with nitrogen oxides and volatile organic compounds in the atmosphere, it leads to the creation of ozone at ground level, which can be harmful to human health. Understanding these photochemical processes is essential for developing strategies to combat air pollution and protect public health. In the field of technology, photochemical reactions have significant implications for the development of new materials and energy sources. Photovoltaic cells, which convert sunlight into electricity, rely on photochemical principles to function effectively. Researchers are continually exploring ways to enhance the efficiency of these cells through better understanding of photochemical mechanisms. Additionally, photochemical methods are being investigated for use in synthesizing pharmaceuticals and other complex organic molecules, providing a more sustainable approach to chemical manufacturing. Furthermore, the study of photochemical reactions extends to the realm of art and preservation. Photochemical processes can lead to the fading of colors in paintings and photographs when exposed to light over time. Conservators must understand these reactions to protect and preserve cultural heritage items effectively. By applying knowledge of photochemical behavior, they can develop techniques to minimize damage and extend the lifespan of artworks. In conclusion, the significance of photochemical reactions cannot be overstated. They are integral to life on Earth, play a critical role in environmental processes, and drive innovation in technology and materials science. A deeper understanding of photochemical phenomena will not only enhance our appreciation of the natural world but also pave the way for advancements that could benefit society as a whole. As we continue to explore the complexities of photochemical reactions, we unlock the potential for new solutions to some of the most pressing challenges facing our planet today.

光化学反应的概念对于理解自然和技术中的各种过程至关重要。本质上，光化学是指由光引发的化学反应。这一现象不仅对植物通过光合作用的生存至关重要，而且在许多工业应用中也发挥着重要作用。例如，某些化学品和材料的生产在很大程度上依赖于光化学过程。 在自然界中，光化学活动最显著的例子之一是光合作用，植物通过这一过程将阳光转化为能量。在这个过程中，叶绿素吸收光线，触发一系列光化学反应，将二氧化碳和水转化为葡萄糖和氧气。这个过程对地球上的生命至关重要，因为它提供了我们呼吸的氧气，并形成了食物链的基础。如果没有光化学反应，我们所知的生命将不存在。 此外，光化学反应不仅限于生物系统；它们在环境化学中也很普遍。例如，城市地区雾霾的形成在很大程度上是由于污染物和阳光之间的光化学反应。当阳光与大气中的氮氧化物和挥发性有机化合物相互作用时，会导致地面臭氧的形成，这可能对人类健康有害。理解这些光化学过程对于制定应对空气污染和保护公共健康的策略至关重要。 在技术领域，光化学反应对新材料和能源来源的发展具有重要意义。光伏电池利用光化学原理将阳光转化为电力。研究人员不断探索通过更好地理解光化学机制来提高这些电池效率的方法。此外，光化学方法正在被研究用于合成药物和其他复杂有机分子，提供一种更可持续的化学制造途径。 此外，光化学反应的研究还扩展到艺术和保护领域。光化学过程会导致艺术品和照片在长时间暴露于光线下褪色。保护工作者必须理解这些反应，以有效保护和保存文化遗产物品。通过应用光化学行为的知识，他们可以开发出减少损害和延长艺术品寿命的技术。 总之，光化学反应的重要性不容小觑。它们是地球生命的核心，对环境过程起着关键作用，并推动技术和材料科学的创新。深入理解光化学现象不仅会增强我们对自然世界的欣赏，还将为解决一些当今地球面临的最紧迫挑战铺平道路。随着我们继续探索光化学反应的复杂性，我们解锁了新的潜力，为社会带来好处。