isotopic mixture

简明释义

同位素混合物

英英释义

例句

1.In nuclear medicine, doctors often use an isotopic mixture (同位素混合物) of technetium for imaging procedures.

在核医学中，医生通常使用锝的isotopic mixture (同位素混合物) 进行成像程序。

2.By examining the isotopic mixture (同位素混合物) in water samples, researchers can trace pollution sources.

通过检查水样中的isotopic mixture (同位素混合物)，研究人员可以追踪污染源。

3.The forensic team used an isotopic mixture (同位素混合物) analysis to identify the origin of the substances found at the crime scene.

法医团队使用isotopic mixture (同位素混合物) 分析来识别在犯罪现场发现的物质的来源。

4.The study focused on the isotopic mixture (同位素混合物) found in the atmosphere to understand climate change.

这项研究集中于大气中的isotopic mixture (同位素混合物)，以理解气候变化。

5.The geologist analyzed the rock sample to determine its age using an isotopic mixture (同位素混合物) of uranium and lead.

地质学家分析了岩石样本，以利用铀和铅的isotopic mixture (同位素混合物) 来确定其年龄。

作文

In the realm of chemistry and physics, the term isotopic mixture refers to a combination of two or more isotopes of the same element that coexist in a given sample. Isotopes are variants of a particular chemical element that share the same number of protons but have different numbers of neutrons, resulting in different atomic masses. Understanding isotopic mixture is crucial for various scientific applications, including radiometric dating, nuclear medicine, and environmental studies.One of the most common examples of an isotopic mixture is found in natural carbon, which primarily consists of two stable isotopes: carbon-12 (C-12) and carbon-13 (C-13). While C-12 makes up about 98.9% of all carbon on Earth, C-13 accounts for approximately 1.1%. This natural isotopic mixture plays a significant role in the field of geology, particularly in carbon dating techniques used to determine the age of ancient organic materials. By measuring the ratio of C-14, a radioactive isotope, to C-12 in a sample, scientists can estimate how long it has been since the organism died.Moreover, isotopic mixtures are not limited to carbon alone. Other elements, such as oxygen and hydrogen, also exhibit isotopic variations. For instance, water (H2O) can contain both regular hydrogen (protium) and its isotope deuterium (D), leading to a unique isotopic mixture that can influence physical properties such as boiling and freezing points. The study of these mixtures helps scientists understand processes like climate change and ocean circulation patterns.In nuclear medicine, the use of isotopic mixtures is pivotal for diagnostic imaging and treatment. Radioactive isotopes, such as technetium-99m, are often used in medical scans to visualize organs and detect abnormalities. The specific characteristics of these isotopes allow for targeted therapy, minimizing damage to surrounding healthy tissues. Thus, the precise understanding of isotopic mixture becomes essential for improving patient outcomes.Furthermore, the concept of isotopic mixture extends beyond scientific research; it is also relevant in industrial applications. For example, the petroleum industry utilizes isotopic analysis to trace the origins of crude oil and its components. By examining the isotopic mixture of carbon within hydrocarbon samples, geologists can infer the conditions under which the oil was formed, aiding in exploration efforts.In conclusion, the term isotopic mixture encapsulates a fundamental concept in both chemistry and physics, with far-reaching implications across various fields. From dating ancient artifacts to advancing medical technologies and enhancing industrial practices, the understanding of isotopic mixture is vital for progress in science and technology. As researchers continue to explore the nuances of isotopes and their mixtures, we can expect further innovations that will benefit society as a whole.

在化学和物理学领域，术语同位素混合物指的是在给定样本中共存的两种或多种同一元素的同位素的组合。同位素是某一特定化学元素的变体，它们具有相同的质子数，但中子数不同，从而导致不同的原子质量。理解同位素混合物对于各种科学应用至关重要，包括放射性测年、核医学和环境研究。一个最常见的同位素混合物示例是在自然碳中，主要由两种稳定同位素组成：碳-12（C-12）和碳-13（C-13）。虽然C-12占地球上所有碳的约98.9%，但C-13仅占约1.1%。这种自然的同位素混合物在地质学领域中发挥着重要作用，特别是在用于确定古代有机材料年龄的碳测年技术中。通过测量样本中C-14（一个放射性同位素）与C-12的比率，科学家可以估计自生物死亡以来经过了多长时间。此外，同位素混合物并不限于碳。其他元素，如氧和氢，也表现出同位素变异。例如，水（H2O）可以同时包含常规氢（氢-1）和其同位素氘（D），导致一种独特的同位素混合物，这可能影响物理性质，如沸点和冰点。这些混合物的研究帮助科学家理解气候变化和海洋环流模式等过程。在核医学中，使用同位素混合物对诊断成像和治疗至关重要。放射性同位素，如锝-99m，通常用于医学扫描，以可视化器官并检测异常。这些同位素的特定特性允许进行靶向治疗，最小化对周围健康组织的损害。因此，精确理解同位素混合物对于改善患者结果至关重要。此外，同位素混合物的概念不仅限于科学研究；它在工业应用中也具有相关性。例如，石油行业利用同位素分析来追踪原油及其成分的来源。通过检查碳的同位素混合物在碳氢化合物样本中的存在，地质学家可以推断出石油形成的条件，从而帮助勘探工作。总之，术语同位素混合物概括了化学和物理学中的一个基本概念，对各个领域具有深远的影响。从测定古代文物的日期到推动医疗技术的发展，再到增强工业实践，理解同位素混合物对于科学和技术的进步至关重要。随着研究人员继续探索同位素及其混合物的细微差别，我们可以期待进一步的创新，这将使整个社会受益。