polarograph

简明释义

英[/ˈpɒlərəɡræf/]美[/ˈpoʊlərəˌɡræf/]

n. [分化] 极谱仪，极谱记录仪

英英释义

单词用法

同义词

反义词

例句

1.The utility model relates to a dropping-mercury electrode device used in polarograph and the name is the dropping-mercury electrode device.

本实用新型是一种在极谱仪上使用的滴汞电极装置，名称为滴汞电极装置。

2.The utility model relates to a dropping-mercury electrode device used in polarograph and the name is the dropping-mercury electrode device.

本实用新型是一种在极谱仪上使用的滴汞电极装置，名称为滴汞电极装置。

3.Through a series of experiments, it was proved that the polarograph wave formed in this system was a complexing adsorption wave.

通过一系列实验证明了该体系形成的极谱波为配合吸附波。

4.The scientist used a polarograph to measure the concentration of heavy metals in the water sample.

科学家使用极谱仪测量水样中重金属的浓度。

5.In the laboratory, the polarograph allows for precise electrochemical analysis.

在实验室中，极谱仪允许进行精确的电化学分析。

6.To determine the purity of the compound, we relied on the polarograph for accurate readings.

为了确定化合物的纯度，我们依赖于极谱仪获得准确的读数。

7.The polarograph is essential for studying the redox reactions in various chemical processes.

极谱仪对于研究各种化学过程中的氧还原反应至关重要。

8.Using a polarograph, researchers can analyze the electrochemical behavior of different substances.

研究人员可以使用极谱仪分析不同物质的电化学行为。

作文

In the world of analytical chemistry, various instruments play a crucial role in the analysis of substances. One such instrument is the polarograph, which is widely used for the electrochemical analysis of solutions. The polarograph operates on the principle of polarography, a technique that allows chemists to study the reduction and oxidation reactions of different chemical species in a solution. This method is particularly useful for determining the concentration of trace metals and organic compounds in various samples. The history of the polarograph dates back to the early 20th century when it was developed by the chemist Jaroslav Heyrovský, who later won the Nobel Prize in Chemistry for his contributions to this field. The polarograph employs a dropping mercury electrode (DME) or a solid electrode, which serves as the working electrode in the electrochemical cell. When a voltage is applied, the current flowing through the solution is measured as a function of the applied potential. This creates a polarogram, a graph that illustrates the relationship between current and voltage, revealing important information about the chemical species present in the solution. One of the significant advantages of using a polarograph is its ability to detect very low concentrations of analytes. This sensitivity makes it an invaluable tool for environmental monitoring, food safety testing, and clinical diagnostics. For instance, in environmental studies, the polarograph can be used to assess the levels of heavy metals in water samples, which is critical for ensuring safe drinking water. Similarly, in the pharmaceutical industry, it can help in analyzing the purity of drug formulations by detecting impurities at trace levels. Moreover, the polarograph is relatively easy to use and can provide real-time analysis, allowing researchers to make quick decisions based on the data obtained. The versatility of this instrument extends beyond just metal analysis; it can also be employed in studying organic compounds, making it a powerful tool in both academic research and industrial applications. Despite its many advantages, there are some limitations to the polarograph. For example, the use of mercury in the dropping mercury electrode raises environmental concerns due to mercury's toxicity. As a result, researchers are exploring alternative materials and methods to mitigate these issues. Additionally, the polarograph may not be suitable for all types of samples, particularly those that are highly viscous or contain particulates that can interfere with the measurements. In conclusion, the polarograph is a vital instrument in the field of analytical chemistry, providing valuable insights into the composition of various substances. Its ability to detect trace levels of analytes makes it essential for various applications, from environmental monitoring to pharmaceuticals. As technology advances, the polarograph will continue to evolve, potentially incorporating new materials and techniques that enhance its capabilities while addressing environmental concerns. Understanding the functionality and applications of the polarograph is crucial for anyone involved in chemical analysis, as it represents a significant advancement in our ability to analyze and understand the complex world of chemical interactions.

在分析化学的世界中，各种仪器在物质分析中扮演着至关重要的角色。其中一种仪器是极谱仪，它广泛用于溶液的电化学分析。极谱仪基于极谱法的原理，这是一种允许化学家研究不同化学物质在溶液中还原和氧化反应的技术。这种方法特别适用于确定各种样品中微量金属和有机化合物的浓度。 极谱仪的历史可以追溯到20世纪初，当时由化学家雅罗斯拉夫·海罗夫斯基开发，他因在这一领域的贡献而获得诺贝尔化学奖。极谱仪采用滴汞电极（DME）或固体电极，作为电化学池中的工作电极。当施加电压时，流经溶液的电流作为施加电位的函数被测量。这会产生极谱图，一个展示电流与电压关系的图形，揭示了溶液中存在的化学物质的重要信息。 使用极谱仪的一个显著优势是其能够检测非常低浓度的分析物。这种灵敏度使其成为环境监测、食品安全检测和临床诊断中的宝贵工具。例如，在环境研究中，极谱仪可用于评估水样中重金属的水平，这对确保饮用水的安全至关重要。同样，在制药行业，它可以通过检测微量杂质来帮助分析药物制剂的纯度。 此外，极谱仪相对易于使用，并且可以提供实时分析，使研究人员能够根据获得的数据快速做出决策。这种仪器的多功能性不仅限于金属分析；它也可以用于研究有机化合物，使其成为学术研究和工业应用中的强大工具。 尽管有许多优点，极谱仪也有一些局限性。例如，滴汞电极中汞的使用因其毒性而引发环境问题。因此，研究人员正在探索替代材料和方法以减轻这些问题。此外，极谱仪可能不适用于所有类型的样品，特别是那些高度粘稠或含有颗粒的样品，这可能会干扰测量。 总之，极谱仪是分析化学领域的重要仪器，为各种物质的成分提供了宝贵的见解。其检测分析物微量的能力使其在环境监测到制药等各种应用中至关重要。随着技术的进步，极谱仪将继续发展，可能会结合新材料和技术，以增强其能力，同时解决环境问题。理解极谱仪的功能和应用对于任何参与化学分析的人来说都是至关重要的，因为它代表了我们分析和理解化学相互作用复杂世界的重要进步。