determination of molecular weight

简明释义

分子量测定

英英释义

例句

1.In drug development, the determination of molecular weight helps in predicting the drug's behavior in the body.

在药物开发中，分子量的测定有助于预测药物在体内的行为。

2.The laboratory used mass spectrometry for the determination of molecular weight of the unknown compound.

实验室使用质谱法进行未知化合物的分子量的测定。

3.The determination of molecular weight is crucial for understanding the properties of polymers.

对聚合物特性的理解至关重要，需进行分子量的测定。

4.The determination of molecular weight can affect the viscosity of a solution.

对溶液粘度的影响可能与分子量的测定有关。

5.Accurate determination of molecular weight is essential for formulating effective vaccines.

准确的分子量的测定对有效疫苗的配方至关重要。

作文

The process of understanding the properties of substances is fundamental to the field of chemistry. One crucial aspect of this understanding is the determination of molecular weight, which refers to the calculation of the mass of a molecule based on the sum of the atomic weights of its constituent atoms. This concept is essential for scientists as it allows them to predict how substances will react with one another, their behavior in different environments, and their overall stability. Molecular weight plays a significant role in various applications, including drug formulation, material science, and biochemistry. For instance, in pharmacology, the determination of molecular weight helps researchers design effective medications by ensuring that the drug molecules can reach their target sites in the body efficiently. If a drug's molecular weight is too high, it may not be able to penetrate cell membranes effectively, while a molecular weight that is too low may lead to rapid clearance from the body. Therefore, accurate determination of molecular weight is vital for optimizing drug efficacy and safety.In addition to pharmaceuticals, the determination of molecular weight is equally important in the field of polymer science. Polymers are large molecules composed of repeating structural units, and their properties are heavily influenced by their molecular weight. For example, a polymer with a high molecular weight typically exhibits greater strength and durability compared to its low molecular weight counterparts. Understanding how to accurately measure and manipulate the determination of molecular weight of polymers can lead to the development of new materials with tailored properties for specific applications, such as coatings, adhesives, and plastics.The methods used for the determination of molecular weight vary depending on the nature of the substance being analyzed. Common techniques include mass spectrometry, gel permeation chromatography, and light scattering. Each method has its advantages and limitations, making it essential for chemists to select the appropriate technique based on the specific requirements of their analysis. For instance, mass spectrometry is highly sensitive and can provide precise molecular weight measurements but may require complex sample preparation. In contrast, gel permeation chromatography is excellent for separating polymers based on their size but may not always yield exact molecular weights.Overall, the determination of molecular weight serves as a cornerstone in the study and application of chemical substances. It provides critical insights into the behavior and interactions of molecules, enabling advancements across various scientific disciplines. As research continues to evolve, the importance of accurate molecular weight determination will only increase, driving innovations that enhance our understanding of the molecular world around us. The ability to manipulate and predict molecular weights will undoubtedly lead to breakthroughs that can benefit society in numerous ways, from healthcare improvements to the development of new materials. Thus, mastering the determination of molecular weight is essential for anyone pursuing a career in science, particularly in chemistry and related fields.

理解物质性质的过程是化学领域的基础。这个理解的一个关键方面是分子量的测定，它指的是基于其组成原子的原子量总和来计算分子的质量。这个概念对于科学家来说至关重要，因为它使他们能够预测物质之间的反应、它们在不同环境中的行为及其整体稳定性。分子量在药物配方、材料科学和生物化学等各种应用中发挥着重要作用。例如，在药理学中，分子量的测定帮助研究人员设计有效的药物，通过确保药物分子能够有效到达体内的目标部位。如果药物的分子量过高，它可能无法有效穿透细胞膜，而分子量过低则可能导致药物迅速从体内清除。因此，准确的分子量的测定对于优化药物的有效性和安全性至关重要。除了药品，分子量的测定在聚合物科学领域同样重要。聚合物是由重复结构单元组成的大分子，其性质受到分子量的极大影响。例如，具有高分子量的聚合物通常表现出比低分子量聚合物更大的强度和耐用性。理解如何准确测量和操控聚合物的分子量的测定可以导致开发出具有特定应用需求的新材料，如涂料、粘合剂和塑料。用于分子量的测定的方法根据被分析物质的性质而异。常见的技术包括质谱法、凝胶渗透色谱法和光散射法。每种方法都有其优缺点，因此化学家必须根据分析的具体要求选择适当的技术。例如，质谱法灵敏度高，可以提供精确的分子量测量，但可能需要复杂的样品准备。相反，凝胶渗透色谱法非常适合根据大小分离聚合物，但不一定总能产生准确的分子量。总体而言，分子量的测定作为研究和应用化学物质的基石，提供了对分子行为和相互作用的关键洞察，从而推动各个科学领域的进步。随着研究的不断发展，准确的分子量测定的重要性只会增加，推动创新以增强我们对周围分子世界的理解。操控和预测分子量的能力无疑将带来突破，造福社会，涉及多个方面，从医疗保健改善到新材料的发展。因此，掌握分子量的测定对于任何追求科学职业的人来说都是至关重要的，尤其是在化学及相关领域。