absorption spectrophotometry

简明释义

吸收分光光度法

英英释义

例句

1.Researchers often rely on absorption spectrophotometry for quantitative analysis in chemical research.

研究人员通常依赖吸收光谱测定法进行化学研究中的定量分析。

2.In the lab, we used absorption spectrophotometry to analyze the concentration of the dye in the solution.

在实验室，我们使用吸收光谱测定法来分析溶液中染料的浓度。

3.The results from absorption spectrophotometry showed a significant increase in the compound's concentration over time.

来自吸收光谱测定法的结果显示该化合物的浓度随时间显著增加。

4.By applying absorption spectrophotometry, we can detect even trace amounts of substances in a mixture.

通过应用吸收光谱测定法，我们可以检测混合物中微量物质。

5.The study employed absorption spectrophotometry to determine the levels of pollutants in water samples.

这项研究采用吸收光谱测定法来确定水样中的污染物水平。

作文

In the realm of analytical chemistry, various techniques are employed to study the properties of substances. One such technique is absorption spectrophotometry, which plays a crucial role in determining the concentration of a particular substance in a solution. This method relies on the principle that different substances absorb light at specific wavelengths. When light passes through a sample, some wavelengths are absorbed while others are transmitted. By measuring the amount of light absorbed, chemists can infer the concentration of the analyte present in the solution. The basic setup for absorption spectrophotometry includes a light source, a monochromator, a sample holder, and a detector. The light source emits a beam of light that is directed towards the monochromator, which separates the light into its constituent wavelengths. The selected wavelength then passes through the sample holder containing the solution to be analyzed. Finally, the detector measures the intensity of the light that emerges from the sample. One of the key advantages of absorption spectrophotometry is its sensitivity. It can detect very low concentrations of substances, making it invaluable in fields such as environmental monitoring, pharmaceuticals, and biochemistry. For instance, in environmental studies, absorption spectrophotometry can be used to measure pollutants in water samples, helping to assess water quality and compliance with health standards. Similarly, in pharmaceuticals, this technique is essential for determining the concentration of active ingredients in drug formulations. Moreover, absorption spectrophotometry is not limited to liquid samples; it can also be adapted for solid and gaseous samples. In solid-state analysis, samples may be dissolved or dispersed in a suitable solvent to allow for accurate measurements. Gaseous samples can be analyzed by passing light through a gas cell. This versatility makes absorption spectrophotometry a widely applicable technique across various scientific disciplines. However, like any analytical method, absorption spectrophotometry has its limitations. One major concern is the potential for interference from other substances present in the sample. If multiple components absorb light at similar wavelengths, it can lead to inaccurate results. To mitigate this issue, it is often necessary to use calibration curves and perform additional analyses to confirm findings. Additionally, the technique requires careful handling of samples and equipment to ensure accurate measurements. In conclusion, absorption spectrophotometry is a powerful analytical tool that provides valuable insights into the composition of various substances. Its ability to measure light absorption at specific wavelengths allows for precise determination of concentrations, making it essential in many scientific fields. Despite its limitations, the continued development and refinement of this technique promise to enhance its application and reliability in future research. As scientists strive to understand complex chemical interactions and improve product safety, absorption spectrophotometry will undoubtedly remain a cornerstone of analytical chemistry.

在分析化学领域，各种技术被用来研究物质的性质。其中一种技术是吸收光谱法，它在确定溶液中特定物质的浓度方面发挥着至关重要的作用。这种方法依赖于不同物质在特定波长下吸收光的原理。当光通过样品时，一些波长被吸收，而其他波长则被透过。通过测量吸收的光量，化学家可以推断出溶液中存在的分析物的浓度。吸收光谱法的基本设置包括光源、单色仪、样品 holder 和探测器。光源发出一束光，该光束被引导到单色仪，后者将光分离成其组成波长。选择的波长然后通过含有待分析溶液的样品 holder。最后，探测器测量从样品中发出的光的强度。吸收光谱法的一个主要优点是其灵敏度。它可以检测非常低浓度的物质，使其在环境监测、制药和生物化学等领域不可或缺。例如，在环境研究中，吸收光谱法可用于测量水样中的污染物，帮助评估水质和遵守健康标准。同样，在制药行业，这项技术对于确定药物制剂中活性成分的浓度至关重要。此外，吸收光谱法不仅限于液体样品；它还可以适应固体和气体样品。在固态分析中，样品可能会溶解或分散在合适的溶剂中，以便进行准确的测量。气体样品可以通过将光通过气体池进行分析。这种多功能性使得吸收光谱法在各个科学学科中广泛应用。然而，像任何分析方法一样，吸收光谱法也有其局限性。一个主要问题是来自样品中其他物质的潜在干扰。如果多个组分在相似波长下吸收光，会导致结果不准确。为了减轻这个问题，通常需要使用校准曲线并进行额外的分析以确认结果。此外，该技术需要仔细处理样品和设备，以确保准确的测量。总之，吸收光谱法是一种强大的分析工具，为各种物质的成分提供了宝贵的见解。它能够在特定波长下测量光的吸收，从而允许精确确定浓度，使其在许多科学领域中至关重要。尽管存在局限性，但这项技术的持续发展和完善承诺将增强其在未来研究中的应用和可靠性。随着科学家们努力理解复杂的化学相互作用并提高产品安全性，吸收光谱法无疑将继续成为分析化学的基石。