direct isotopic dilution analysis

简明释义

直接同位素稀释分析

英英释义

例句

1.Researchers utilized direct isotopic dilution analysis 直接同位素稀释分析 to accurately measure the levels of trace metals in soil.

研究人员利用直接同位素稀释分析 direct isotopic dilution analysis 准确测量土壤中微量金属的水平。

2.In environmental studies, direct isotopic dilution analysis 直接同位素稀释分析 is used to determine the concentration of pollutants in water samples.

在环境研究中，直接同位素稀释分析 direct isotopic dilution analysis 被用来确定水样中污染物的浓度。

3.The accuracy of direct isotopic dilution analysis 直接同位素稀释分析 makes it a preferred method in geological studies.

由于其高准确性，直接同位素稀释分析 direct isotopic dilution analysis 成为地质研究的首选方法。

4.The pharmaceutical industry often employs direct isotopic dilution analysis 直接同位素稀释分析 for quality control of active ingredients in drugs.

制药行业经常使用直接同位素稀释分析 direct isotopic dilution analysis 进行药物中活性成分的质量控制。

5.Using direct isotopic dilution analysis 直接同位素稀释分析, scientists can track the movement of nutrients in agricultural soils.

通过使用直接同位素稀释分析 direct isotopic dilution analysis，科学家能够追踪农业土壤中营养物质的运动。

作文

In the field of analytical chemistry, various techniques are utilized to determine the composition and concentration of substances within a sample. One such advanced method is known as direct isotopic dilution analysis, which has gained significant attention due to its precision and reliability. This technique involves the addition of a known quantity of an isotopically labeled compound to the sample. The ratio of the isotopes in the sample and the added standard allows for accurate quantification of the target analyte. The primary advantage of direct isotopic dilution analysis lies in its ability to minimize matrix effects, which can often skew results in other analytical methods.To understand how direct isotopic dilution analysis works, it is essential to grasp the concept of isotopes. Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons. This means they exhibit nearly identical chemical behavior but differ in mass. By introducing a stable or radioactive isotope into the sample, chemists can track and measure the concentration of the original compound with remarkable accuracy.The process begins with the preparation of the sample and the isotopically labeled standard. After mixing these two components, the mixture undergoes analysis using sophisticated instruments such as mass spectrometers. These instruments can detect the different isotopes and provide data on their relative abundances. By applying mathematical equations, analysts can determine the concentration of the target analyte in the original sample based on the dilution factor and the measured isotope ratios.One of the most significant applications of direct isotopic dilution analysis is in environmental monitoring. For instance, this method can be used to assess the levels of pollutants in water bodies. By measuring the isotopic composition of contaminants, researchers can identify their sources and understand their behavior in the environment. Additionally, this technique is invaluable in pharmaceuticals, where it is crucial to ensure the correct dosage of active ingredients in medications.Moreover, direct isotopic dilution analysis is not limited to liquid samples; it can also be applied to solid and gaseous materials. This versatility makes it a preferred choice in many laboratories around the world. The precision offered by this technique is particularly beneficial in research settings, where even minor variations in concentration can lead to significant differences in experimental outcomes.Despite its advantages, direct isotopic dilution analysis does require careful consideration of various factors, including the choice of isotopes and the potential for contamination during sample preparation. Analysts must also be well-trained in both the theoretical and practical aspects of the method to ensure accurate results. As technology advances, we can expect further improvements in the sensitivity and efficiency of this analytical technique.In conclusion, direct isotopic dilution analysis stands out as a powerful tool in the arsenal of analytical chemistry. Its ability to deliver precise and reliable measurements makes it indispensable in various fields, from environmental science to pharmaceuticals. As researchers continue to explore its capabilities and applications, the importance of this method will undoubtedly grow, further enhancing our understanding of complex chemical systems and contributing to advancements in science and technology.

在分析化学领域，采用各种技术来确定样本中物质的成分和浓度。其中一种先进的方法被称为直接同位素稀释分析，由于其精确性和可靠性而受到广泛关注。这种技术涉及向样本中添加已知数量的同位素标记化合物。同位素在样本和添加的标准之间的比例允许准确量化目标分析物。直接同位素稀释分析的主要优点在于其能够最小化基质效应，这在其他分析方法中常常会扭曲结果。要理解直接同位素稀释分析的工作原理，必须掌握同位素的概念。同位素是特定化学元素的变体，它们具有相同数量的质子但不同数量的中子。这意味着它们表现出几乎相同的化学行为，但质量不同。通过将稳定或放射性同位素引入样本，化学家可以以极高的准确性跟踪和测量原始化合物的浓度。该过程从样本和同位素标记标准的准备开始。在将这两个组分混合后，混合物使用诸如质谱仪等复杂仪器进行分析。这些仪器可以检测不同的同位素并提供其相对丰度的数据。通过应用数学方程，分析人员可以根据稀释因子和测得的同位素比率确定原始样本中目标分析物的浓度。直接同位素稀释分析的一个重要应用是在环境监测中。例如，这种方法可以用于评估水体中污染物的水平。通过测量污染物的同位素组成，研究人员可以识别其来源并了解其在环境中的行为。此外，这种技术在制药行业也至关重要，在那里确保药物中活性成分的正确剂量是至关重要的。此外，直接同位素稀释分析不仅限于液体样本；它还可以应用于固体和气体材料。这种多功能性使其成为全球许多实验室的首选。该技术提供的精确性在研究环境中特别有益，因为即使是浓度的微小变化也可能导致实验结果的显著差异。尽管有其优点，直接同位素稀释分析确实需要仔细考虑各种因素，包括同位素的选择和样本准备过程中潜在的污染。分析人员还必须在理论和实践方面都接受良好的培训，以确保结果的准确性。随着技术的进步，我们可以期待这种分析技术的灵敏度和效率进一步提高。总之，直接同位素稀释分析在分析化学的工具库中脱颖而出。其提供精确可靠的测量能力使其在环境科学到制药等多个领域不可或缺。随着研究人员继续探索其能力和应用，这种方法的重要性无疑会增长，进一步增强我们对复杂化学系统的理解，并推动科学和技术的进步。