isotopic abundance

简明释义

同位素丰度

英英释义

例句

1.In geology, analyzing the isotopic abundance 同位素丰度 of strontium helps determine the age of rocks.

在地质学中，分析锶的同位素丰度 isotopic abundance 有助于确定岩石的年龄。

2.The determination of the isotopic abundance 同位素丰度 of carbon is crucial for understanding climate change.

碳的同位素丰度 isotopic abundance 的确定对理解气候变化至关重要。

3.The isotopic abundance 同位素丰度 of nitrogen can reveal information about soil health and fertility.

氮的同位素丰度 isotopic abundance 可以揭示土壤健康和肥力的信息。

4.The isotopic abundance 同位素丰度 of sulfur is used in studies of volcanic activity.

硫的同位素丰度 isotopic abundance 被用于火山活动的研究。

5.Scientists measure the isotopic abundance 同位素丰度 of oxygen to trace water sources in environmental studies.

科学家测量氧的同位素丰度 isotopic abundance 以追踪环境研究中的水源。

作文

Understanding the concept of isotopic abundance is crucial in fields such as chemistry, geology, and environmental science. Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons in their nuclei. This difference in neutron count leads to variations in atomic mass and stability among isotopes. The term isotopic abundance refers to the relative amount of each isotope present in a sample of an element, usually expressed as a percentage. For example, carbon has two stable isotopes: carbon-12 and carbon-13. The isotopic abundance of carbon-12 is about 98.9%, while carbon-13 accounts for approximately 1.1% of natural carbon. The significance of isotopic abundance extends beyond mere academic interest; it has practical applications in various scientific disciplines. In geology, scientists utilize the isotopic abundance of elements to date rocks and fossils, a process known as radiometric dating. By measuring the ratio of parent isotopes to daughter isotopes, geologists can determine the age of a sample. This technique has revolutionized our understanding of Earth's history and the timing of significant geological events.In environmental science, isotopic abundance plays a vital role in tracing sources of pollution and understanding ecological processes. For instance, researchers can analyze the isotopic abundance of nitrogen in water samples to identify the origins of nutrient pollution, which is crucial for managing water quality. Similarly, studying the isotopic abundance of carbon in different ecosystems helps scientists understand carbon cycling and the impacts of climate change.Moreover, the field of medicine also benefits from the study of isotopic abundance. Isotopes are used in medical imaging and cancer treatment. For example, radioactive isotopes can be employed in Positron Emission Tomography (PET) scans, allowing doctors to visualize metabolic processes in the body. Understanding the isotopic abundance of these isotopes ensures that medical professionals use them safely and effectively.In conclusion, the concept of isotopic abundance is fundamental to multiple scientific fields. Its applications in dating geological samples, tracing environmental pollutants, and advancing medical technologies highlight its importance. As we continue to explore the natural world, understanding isotopic abundance will undoubtedly lead to further discoveries and innovations that enhance our knowledge and improve our quality of life.

理解同位素丰度的概念在化学、地质学和环境科学等领域至关重要。同位素是指具有相同数量的质子但中子数量不同的特定化学元素的变体。这种中子数量的差异导致同位素之间在原子质量和稳定性上的变化。术语同位素丰度指的是在某一元素样本中每种同位素的相对数量，通常以百分比表示。例如，碳有两种稳定的同位素：碳-12和碳-13。碳-12的同位素丰度约为98.9%，而碳-13大约占自然碳的1.1%。同位素丰度的重要性超出了学术兴趣，它在多个科学学科中具有实际应用。在地质学中，科学家利用同位素丰度来测定岩石和化石的年代，这一过程称为放射性定年。通过测量母同位素与子同位素的比率，地质学家可以确定样本的年龄。这项技术彻底改变了我们对地球历史及重大地质事件时序的理解。在环境科学中，同位素丰度在追踪污染源和理解生态过程方面发挥着至关重要的作用。例如，研究人员可以分析水样中氮的同位素丰度来识别营养污染的来源，这对水质管理至关重要。同样，研究不同生态系统中碳的同位素丰度有助于科学家理解碳循环及气候变化的影响。此外，医学领域也受益于同位素丰度的研究。医学成像和癌症治疗中使用了同位素。例如，放射性同位素可用于正电子发射断层扫描（PET），使医生能够可视化体内的新陈代谢过程。了解这些同位素的同位素丰度确保医疗专业人员安全有效地使用它们。总之，同位素丰度的概念是多个科学领域的基础。它在测定地质样本年代、追踪环境污染物以及推动医学技术进步中的应用突显了其重要性。随着我们继续探索自然世界，理解同位素丰度无疑将引领进一步的发现和创新，从而增强我们的知识并改善我们的生活质量。