absorption band

简明释义

吸收带

英英释义

例句

1.The presence of an absorption band 吸收带 in the infrared spectrum can help identify chemical compounds.

红外光谱中的 absorption band 吸收带 的存在可以帮助识别化学化合物。

2.Different materials have unique absorption bands 吸收带 that can be used for identification.

不同材料具有独特的 absorption bands 吸收带，可用于识别。

3.Researchers often study the absorption bands 吸收带 of gases to understand their properties.

研究人员通常研究气体的 absorption bands 吸收带 以了解其性质。

4.The analysis of the absorption band 吸收带 can provide insight into the electronic structure of molecules.

对 absorption band 吸收带 的分析可以提供分子电子结构的见解。

5.In spectroscopy, the absorption band 吸收带 indicates the range of wavelengths that a substance can absorb.

在光谱学中，absorption band 吸收带 表示物质可以吸收的波长范围。

作文

In the field of spectroscopy, the term absorption band refers to a specific range of wavelengths in the electromagnetic spectrum where light is absorbed by a substance. This phenomenon occurs when the energy of the incoming photons matches the energy difference between two quantum states of the molecules in the substance. Understanding absorption bands is crucial for scientists and researchers as they provide valuable information about the molecular structure and composition of materials. For instance, when studying organic compounds, different functional groups exhibit distinct absorption bands that can be used to identify them. The concept of absorption bands can be illustrated through the example of infrared spectroscopy. In this technique, infrared light is passed through a sample, and the resulting spectrum displays peaks corresponding to the absorption bands of the sample. Each peak indicates a specific vibration mode of the molecules, allowing scientists to deduce the presence of certain bonds, such as C=O or N-H. By analyzing these absorption bands, researchers can infer not only the functional groups present but also gain insights into the molecular interactions and conformations.Moreover, absorption bands are not limited to infrared spectroscopy; they are also prominent in ultraviolet-visible (UV-Vis) spectroscopy. In UV-Vis spectroscopy, the absorption bands indicate the electronic transitions within molecules. When a molecule absorbs light in the UV or visible range, electrons are excited from a ground state to a higher energy state. The positions and intensities of the absorption bands in the UV-Vis spectrum can reveal information about the electronic structure of the molecule, including conjugation and the presence of chromophores.Understanding how absorption bands work is also essential for applications in environmental science. For example, remote sensing technologies utilize absorption bands to monitor atmospheric gases and pollutants. By analyzing the absorption bands of gases like carbon dioxide or methane, scientists can assess their concentrations in the atmosphere and study their impact on climate change. This application highlights the importance of absorption bands beyond laboratory settings, illustrating their relevance in real-world scenarios.In conclusion, the study of absorption bands is integral to various scientific disciplines, including chemistry, physics, and environmental science. These bands provide a window into the molecular world, enabling researchers to identify substances, understand molecular interactions, and monitor environmental changes. As technology advances, the ability to analyze absorption bands continues to improve, leading to new discoveries and applications that can benefit society as a whole. The significance of absorption bands cannot be overstated, as they serve as a bridge connecting theoretical concepts with practical applications in our understanding of the natural world.

在光谱学领域，术语吸收带指的是电磁谱中光被物质吸收的特定波长范围。这种现象发生在入射光子的能量与物质中分子两个量子态之间的能量差相匹配时。理解吸收带对科学家和研究人员至关重要，因为它们提供了关于材料分子结构和组成的宝贵信息。例如，在研究有机化合物时，不同的官能团表现出独特的吸收带，可以用来识别它们。吸收带的概念可以通过红外光谱法的例子来说明。在这种技术中，红外光通过样品，结果光谱显示出与样品的吸收带相对应的峰值。每个峰值表示分子的特定振动模式，使科学家能够推断某些键的存在，如C=O或N-H。通过分析这些吸收带，研究人员不仅可以推断出存在的官能团，还可以深入了解分子间的相互作用和构象。此外，吸收带不仅限于红外光谱；它们在紫外-可见（UV-Vis）光谱中也很突出。在UV-Vis光谱中，吸收带表示分子内的电子跃迁。当分子在紫外或可见光范围内吸收光时，电子从基态跃迁到更高的能级。UV-Vis光谱中吸收带的位置和强度可以揭示分子的电子结构信息，包括共轭和色团的存在。了解吸收带的工作原理对于环境科学中的应用也至关重要。例如，遥感技术利用吸收带监测大气中的气体和污染物。通过分析二氧化碳或甲烷等气体的吸收带，科学家可以评估其在大气中的浓度并研究其对气候变化的影响。这一应用突显了吸收带在实验室之外的重要性，说明了它们在现实场景中的相关性。总之，吸收带的研究对于化学、物理和环境科学等多个科学学科至关重要。这些带为我们提供了一个观察分子世界的窗口，使研究人员能够识别物质、理解分子间的相互作用，并监测环境变化。随着技术的发展，分析吸收带的能力不断提高，导致新的发现和应用，可以惠及整个社会。吸收带的重要性不可低估，因为它们作为连接理论概念与我们对自然界理解的实际应用的桥梁。