mass spectrogram

简明释义

质谱图

英英释义

例句

1.The mass spectrogram revealed unexpected peaks, indicating a potential reaction byproduct.

质谱图显示出意外的峰值，表明可能的反应副产物。

2.The researcher analyzed the mass spectrogram to identify the molecular composition of the sample.

研究人员分析了质谱图以识别样品的分子组成。

3.By comparing the mass spectrogram with known standards, we could determine the presence of contaminants.

通过将质谱图与已知标准进行比较，我们可以确定污染物的存在。

4.The team used a high-resolution mass spectrogram to analyze the isotopic ratios of the elements.

团队使用高分辨率的质谱图分析元素的同位素比率。

5.In proteomics, the mass spectrogram is crucial for identifying proteins in complex mixtures.

在蛋白质组学中，质谱图对于识别复杂混合物中的蛋白质至关重要。

作文

In the field of analytical chemistry, the term mass spectrogram refers to a graphical representation of the mass-to-charge ratio of ions. This powerful analytical tool allows scientists to identify and quantify compounds in a mixture by measuring the mass of the ions produced from the sample. The mass spectrogram is generated using a mass spectrometer, which ionizes chemical species and sorts the ions based on their mass-to-charge ratios. The resulting data provides insight into the molecular composition of the sample, enabling researchers to understand complex mixtures such as biological samples, environmental pollutants, or pharmaceutical formulations.The process begins with the ionization of the sample, which can be achieved through various methods such as electron impact, chemical ionization, or electrospray ionization. Once the ions are generated, they are introduced into the mass spectrometer, where they are accelerated and focused into a beam. The ions then enter a mass analyzer, which separates them based on their mass-to-charge ratios. Common types of mass analyzers include quadrupole, time-of-flight (TOF), and ion trap.After separation, the ions are detected, and the resulting signals are recorded to create the mass spectrogram. This spectrogram displays peaks that correspond to different ions, with the x-axis representing the mass-to-charge ratio and the y-axis indicating the relative abundance of each ion. By analyzing the peaks, chemists can deduce the identity of the compounds present in the sample and their respective concentrations.The utility of the mass spectrogram extends beyond simple identification. It plays a crucial role in various applications, including drug development, proteomics, metabolomics, and environmental monitoring. For example, in drug development, researchers can use this technique to analyze the metabolic pathways of drugs and their interactions within biological systems. In proteomics, the mass spectrogram helps identify proteins in complex biological samples, providing valuable information about cellular functions and disease mechanisms.Moreover, advancements in mass spectrometry technology have led to improved sensitivity and resolution, allowing for the detection of low-abundance compounds and the analysis of complex mixtures. Techniques such as tandem mass spectrometry (MS/MS) enable more detailed structural elucidation of compounds by fragmenting ions and analyzing the resulting fragments, further enhancing the capabilities of the mass spectrogram.In conclusion, the mass spectrogram is an indispensable tool in modern analytical chemistry. Its ability to provide detailed information about the mass and structure of compounds makes it essential for researchers across various scientific disciplines. Understanding how to interpret and utilize the mass spectrogram can lead to significant advancements in our knowledge of chemical and biological systems. As technology continues to evolve, the applications and importance of mass spectrogram will undoubtedly expand, paving the way for new discoveries and innovations in science.

在分析化学领域，术语mass spectrogram指的是离子的质荷比的图形表示。这种强大的分析工具使科学家能够通过测量样品产生的离子的质量来识别和定量混合物中的化合物。mass spectrogram是使用质谱仪生成的，该仪器对化学物质进行电离并根据其质荷比对离子进行分类。生成的数据提供了关于样品分子组成的洞察，使研究人员能够理解复杂的混合物，例如生物样品、环境污染物或药物配方。该过程始于样品的电离，这可以通过多种方法实现，例如电子冲击、化学电离或电喷雾电离。一旦生成离子，它们就会被引入质谱仪，在那里它们被加速并聚焦成一束。然后，离子进入质谱分析器，根据其质荷比进行分离。常见的质谱分析器包括四极杆、飞行时间（TOF）和离子阱。分离后，离子被检测，结果信号被记录以创建mass spectrogram。该光谱显示与不同离子对应的峰，x轴表示质荷比，y轴表示每个离子的相对丰度。通过分析这些峰，化学家可以推断出样品中存在的化合物的身份及其各自的浓度。mass spectrogram的实用性不仅限于简单识别。它在药物开发、蛋白质组学、代谢组学和环境监测等多个应用中发挥着至关重要的作用。例如，在药物开发中，研究人员可以利用这一技术分析药物的代谢途径及其在生物系统中的相互作用。在蛋白质组学中，mass spectrogram有助于识别复杂生物样品中的蛋白质，提供有关细胞功能和疾病机制的宝贵信息。此外，质谱技术的进步提高了灵敏度和分辨率，使得低丰度化合物的检测和复杂混合物的分析成为可能。诸如串联质谱（MS/MS）等技术通过对离子进行碎片化并分析生成的碎片，进一步增强了mass spectrogram的能力，从而实现更详细的化合物结构阐明。总之，mass spectrogram是现代分析化学中不可或缺的工具。它提供了关于化合物的质量和结构的详细信息，使其成为各个科学学科研究人员的必备工具。理解如何解释和利用mass spectrogram可以为我们对化学和生物系统的知识带来重大进展。随着技术的不断发展，mass spectrogram的应用和重要性无疑会扩大，为科学的新发现和创新铺平道路。