mass spectrograph

简明释义

质谱仪

英英释义

例句

1.Researchers employed a mass spectrograph to identify the molecular structure of a new compound.

研究人员使用质谱仪来识别一种新化合物的分子结构。

2.The forensic team utilized a mass spectrograph to analyze drug samples from a crime scene.

法医团队利用质谱仪分析犯罪现场的毒品样本。

3.A mass spectrograph is essential for detecting trace elements in environmental samples.

在环境样本中检测微量元素，质谱仪是必不可少的。

4.By using a mass spectrograph, scientists can determine the isotopic composition of a sample.

通过使用质谱仪，科学家可以确定样本的同位素组成。

5.The laboratory uses a mass spectrograph to analyze the composition of various chemical samples.

实验室使用质谱仪来分析各种化学样本的成分。

作文

The field of analytical chemistry has seen significant advancements over the past few decades, particularly with the development of various instruments that allow for precise measurements and analysis of substances. One of the most important tools in this field is the mass spectrograph, which plays a crucial role in identifying the composition of different materials. A mass spectrograph (质谱仪) is an instrument used to measure the mass-to-charge ratio of ions. This capability makes it incredibly valuable in various applications, from pharmaceuticals to environmental science.The basic principle behind a mass spectrograph involves ionizing chemical compounds to generate charged molecules or molecule fragments and then measuring their mass-to-charge ratios. The process typically begins with the ionization of the sample, which can be achieved through several methods, including electron impact, chemical ionization, or electrospray ionization. Once ionized, the ions are accelerated through an electric field into a mass analyzer, where they are separated based on their mass-to-charge ratios.One of the key advantages of using a mass spectrograph (质谱仪) is its high sensitivity and specificity. This makes it possible to detect even trace amounts of substances in complex mixtures. For instance, in drug testing, a mass spectrograph can identify illicit drugs in urine samples at very low concentrations, providing reliable results that are essential for law enforcement and clinical diagnostics.In addition to drug testing, mass spectrographs are widely used in proteomics, the study of proteins and their functions. By analyzing protein fragments generated through digestion with enzymes, researchers can determine the identity and quantity of proteins in a given sample. This information is vital for understanding biological processes and disease mechanisms, making the mass spectrograph an indispensable tool in modern biomedical research.Moreover, the environmental sciences have also benefited greatly from mass spectrography. Scientists use mass spectrographs to analyze pollutants in air, water, and soil samples. By determining the chemical composition of these samples, researchers can monitor environmental changes, assess pollution levels, and develop strategies for remediation. The ability to detect and quantify contaminants at extremely low levels is crucial for protecting ecosystems and public health.Despite its many advantages, operating a mass spectrograph requires specialized training and expertise. Proper sample preparation, instrument calibration, and data interpretation are critical for obtaining accurate results. As technology evolves, newer generations of mass spectrographs continue to emerge, offering improved resolution, faster analysis times, and enhanced capabilities. These advancements pave the way for innovative research and applications across various fields.In conclusion, the mass spectrograph (质谱仪) has revolutionized the field of analytical chemistry, providing powerful insights into the composition of materials. Its applications span numerous disciplines, including pharmaceuticals, environmental science, and biomedical research. As we continue to explore the complexities of matter, the mass spectrograph remains a vital instrument that enhances our understanding of the world around us.

分析化学领域在过去几十年中取得了显著进展，特别是在各种仪器的发展方面，这些仪器能够对物质进行精确的测量和分析。其中一个最重要的工具是质谱仪，它在识别不同材料的成分方面发挥着至关重要的作用。质谱仪是一种用于测量离子的质荷比的仪器。这种能力使其在药物、环境科学等各种应用中变得极为宝贵。质谱仪的基本原理涉及将化合物电离以生成带电分子或分子碎片，然后测量它们的质荷比。这个过程通常从样品的电离开始，可以通过几种方法实现，包括电子轰击、化学电离或电喷雾电离。一旦电离，离子便会通过电场加速进入质谱分析仪，在那里根据它们的质荷比分离。使用质谱仪的一个主要优点是其高灵敏度和特异性。这使得在复杂混合物中检测微量物质成为可能。例如，在药物检测中，质谱仪可以在尿液样本中识别出极低浓度的非法药物，提供可靠的结果，这对于执法和临床诊断至关重要。除了药物检测，质谱仪还广泛用于蛋白质组学，即研究蛋白质及其功能。通过分析通过酶消化生成的蛋白质碎片，研究人员可以确定给定样本中蛋白质的身份和数量。这些信息对于理解生物过程和疾病机制至关重要，使得质谱仪成为现代生物医学研究中不可或缺的工具。此外，环境科学也从质谱仪中受益匪浅。科学家使用质谱仪分析空气、水和土壤样本中的污染物。通过确定这些样本的化学成分，研究人员可以监测环境变化、评估污染水平并制定修复策略。在极低水平检测和定量污染物的能力对于保护生态系统和公共健康至关重要。尽管有许多优点，操作质谱仪需要专业的培训和专业知识。正确的样品准备、仪器校准和数据解释对于获得准确结果至关重要。随着技术的发展，新一代的质谱仪不断涌现，提供更高的分辨率、更快的分析时间和增强的能力。这些进步为各个领域的创新研究和应用铺平了道路。总之，质谱仪在分析化学领域引发了革命，为材料成分的分析提供了强有力的洞察。它的应用跨越多个学科，包括制药、环境科学和生物医学研究。在我们继续探索物质的复杂性时，质谱仪仍然是一种重要的仪器，增强了我们对周围世界的理解。