retention time

简明释义

保留时间

英英释义

例句

1.In this experiment, we measured the retention time of each sample to determine its purity.

在这个实验中，我们测量了每个样品的保留时间以确定其纯度。

2.The chromatographer adjusted the retention time to improve the separation of the compounds.

色谱分析师调整了保留时间以改善化合物的分离。

3.A longer retention time can indicate stronger interactions between the analyte and the stationary phase.

较长的保留时间可能表明分析物与固定相之间的相互作用更强。

4.We need to optimize the retention time to achieve better resolution in our analysis.

我们需要优化保留时间以在分析中获得更好的分辨率。

5.The software automatically calculates the retention time for each peak in the chromatogram.

该软件自动计算色谱图中每个峰的保留时间。

作文

In the realm of analytical chemistry, the term retention time refers to the duration that a compound takes to travel through a chromatography column before it is detected by the detector. This concept is crucial for the separation and identification of different components in a mixture. When a sample is injected into the chromatograph, each component interacts with the stationary phase of the column differently, resulting in varied retention times. Understanding these differences allows chemists to analyze complex mixtures effectively.The significance of retention time can be illustrated through its application in various fields such as pharmaceuticals, environmental monitoring, and food safety. For instance, in pharmaceutical analysis, determining the retention time of active ingredients in a drug formulation helps ensure quality control. If the retention time of a specific compound deviates from established standards, it may indicate a potential problem with the formulation or the presence of impurities.Moreover, the retention time can be influenced by several factors including temperature, flow rate, and the composition of the mobile phase. By adjusting these parameters, chemists can optimize the separation process to achieve the desired resolution between peaks in a chromatogram. This optimization is essential for accurately identifying and quantifying substances in a sample.In environmental science, retention time plays a vital role in assessing the presence of pollutants in water samples. By analyzing the retention times of various contaminants, researchers can determine the concentration of harmful substances and their potential impact on ecosystems. This information is crucial for regulatory compliance and for developing strategies to mitigate pollution.Furthermore, in food safety, the retention time is used to monitor the levels of additives, preservatives, and contaminants in food products. Ensuring that these substances are within safe limits is essential for protecting public health. By establishing a database of known retention times for various compounds, food scientists can quickly identify any anomalies in food samples, leading to timely interventions.In conclusion, the concept of retention time is fundamental in analytical chemistry and has far-reaching implications in various industries. Its ability to assist in the separation, identification, and quantification of compounds makes it an indispensable tool for chemists and researchers alike. As technology continues to advance, the precision and accuracy of measuring retention times will only improve, further enhancing our ability to analyze complex mixtures and ensure safety in pharmaceuticals, environmental monitoring, and food production.

在分析化学领域，术语保留时间指的是化合物在色谱柱中旅行的持续时间，直到被检测器检测到。这个概念对于分离和识别混合物中的不同成分至关重要。当样品被注入色谱仪时，每个成分与色谱柱的固定相的相互作用不同，导致保留时间各异。理解这些差异使化学家能够有效地分析复杂混合物。保留时间的重要性可以通过其在制药、环境监测和食品安全等多个领域的应用来说明。例如，在药物分析中，确定药物配方中活性成分的保留时间有助于确保质量控制。如果特定化合物的保留时间偏离了既定标准，这可能表明配方存在潜在问题或存在杂质。此外，保留时间会受到多种因素的影响，包括温度、流速和流动相的组成。通过调整这些参数，化学家可以优化分离过程，以实现色谱图中峰的所需分辨率。这种优化对于准确识别和定量样品中的物质至关重要。在环境科学中，保留时间在评估水样中污染物存在方面发挥着重要作用。通过分析各种污染物的保留时间，研究人员可以确定有害物质的浓度及其对生态系统的潜在影响。这些信息对于遵守法规和制定减轻污染的策略至关重要。此外，在食品安全领域，保留时间用于监测食品产品中添加剂、防腐剂和污染物的水平。确保这些物质在安全范围内对于保护公众健康至关重要。通过建立各种化合物已知保留时间的数据库，食品科学家可以快速识别食品样本中的任何异常，从而及时采取干预措施。总之，保留时间的概念在分析化学中是基础性的，并在各个行业中具有深远的影响。它在辅助分离、识别和定量化合物方面的能力使其成为化学家和研究人员不可或缺的工具。随着技术的不断进步，测量保留时间的精确性和准确性只会提高，进一步增强我们分析复杂混合物和确保制药、环境监测和食品生产安全的能力。