isotopic dilution

简明释义

同位素稀释

英英释义

例句

1.In environmental studies, researchers often use isotopic dilution 同位素稀释 to trace the sources of pollutants in water bodies.

在环境研究中，研究人员经常使用isotopic dilution 同位素稀释来追踪水体中污染物的来源。

2.Using isotopic dilution 同位素稀释, scientists can determine the metabolic rates of different organisms in a controlled environment.

科学家们可以通过使用isotopic dilution 同位素稀释来确定不同生物在控制环境中的代谢率。

3.The research team utilized isotopic dilution 同位素稀释 to analyze the carbon cycle in marine ecosystems.

研究小组利用isotopic dilution 同位素稀释分析海洋生态系统中的碳循环。

4.The laboratory applied isotopic dilution 同位素稀释 techniques to accurately measure the concentration of nutrients in soil samples.

实验室应用isotopic dilution 同位素稀释技术来准确测量土壤样本中营养物质的浓度。

5.In pharmacokinetics, isotopic dilution 同位素稀释 helps in studying how drugs are distributed and metabolized in the body.

在药物动力学中，isotopic dilution 同位素稀释有助于研究药物在体内的分布和代谢过程。

作文

Isotopic dilution is a technique widely used in various fields, including chemistry, biology, and environmental science. This method involves the addition of an isotopically labeled substance to a sample, allowing scientists to measure the concentration of specific components within that sample. By utilizing the principles of isotopic labeling, researchers can gain insights into complex biochemical processes and trace the movement of elements through different systems.The concept of isotopic dilution (同位素稀释) is based on the idea that isotopes of the same element behave similarly in chemical reactions. However, by introducing a known quantity of a stable or radioactive isotope, researchers can distinguish between the original and the added isotopes. This distinction enables precise quantification of the target analyte, even in very low concentrations.One significant application of isotopic dilution (同位素稀释) is in the field of pharmacokinetics. Researchers often use this technique to study how drugs are absorbed, distributed, metabolized, and excreted in the body. By labeling a drug with a stable isotope, scientists can track its fate in biological systems. For example, they can determine how much of the drug reaches the bloodstream, how it is metabolized by the liver, and how quickly it is eliminated from the body. This information is crucial for developing effective dosing regimens and understanding potential side effects.Another important application is in environmental science, where isotopic dilution (同位素稀释) is used to study nutrient cycling and pollution tracking. By analyzing the isotopic composition of various elements in soil, water, and biological samples, researchers can trace the sources and pathways of nutrients and pollutants. For instance, isotopic signatures can reveal whether nitrogen in a river comes from agricultural runoff or natural sources. Such studies are vital for informing environmental policy and managing ecosystems sustainably.In addition to these applications, isotopic dilution (同位素稀释) is also employed in food science to verify the authenticity of products. By examining the isotopic ratios in food items, scientists can detect adulteration or mislabeling. For example, the origins of olive oil can be traced through its isotopic profile, ensuring that consumers receive genuine products. This is particularly important in the context of global trade, where food authenticity has significant economic and health implications.Despite its many advantages, the use of isotopic dilution (同位素稀释) requires careful consideration of several factors. The choice of isotopes, the method of sample preparation, and the analytical techniques employed all play critical roles in the accuracy and reliability of the results. Moreover, the interpretation of isotopic data can be complex, necessitating a thorough understanding of the underlying chemical and biological processes involved.In conclusion, isotopic dilution (同位素稀释) is a powerful analytical tool that provides valuable insights across a range of scientific disciplines. Its applications in pharmacokinetics, environmental science, and food authenticity highlight its versatility and importance in modern research. As technology advances and our understanding of isotopic behavior deepens, the potential for isotopic dilution (同位素稀释) to contribute to scientific discovery will only continue to grow.