polarographic analysis

简明释义

极谱分析

英英释义

例句

1.Using polarographic analysis, researchers were able to identify trace amounts of pollutants in the air.

研究人员利用极谱分析能够识别空气中的微量污染物。

2.The team utilized polarographic analysis to monitor the electrochemical behavior of the new battery materials.

团队利用极谱分析监测新电池材料的电化学行为。

3.The laboratory conducted a polarographic analysis to determine the concentration of heavy metals in the water sample.

实验室进行了极谱分析以确定水样中重金属的浓度。

4.The polarographic analysis revealed unexpected levels of lead in the soil.

该极谱分析揭示了土壤中意外的铅含量。

5.In pharmaceuticals, polarographic analysis is crucial for ensuring the purity of active ingredients.

在制药行业，极谱分析对于确保活性成分的纯度至关重要。

作文

Polarographic analysis is a powerful electrochemical technique used for the quantitative determination of various substances in solution. This method is based on the measurement of current as a function of an applied voltage, which allows for the identification and quantification of different analytes. The principle behind polarographic analysis (极谱分析) lies in its ability to provide information about the concentration of a specific ion or molecule in a sample by monitoring the reduction or oxidation processes occurring at an electrode surface. The history of polarographic analysis (极谱分析) dates back to the early 20th century when it was first developed by the chemist Jaroslav Heyrovský, who later received the Nobel Prize for his work. Since then, this technique has evolved significantly, becoming a staple in analytical chemistry laboratories around the world. One of the key advantages of polarographic analysis (极谱分析) is its sensitivity, allowing for the detection of trace amounts of substances, which is crucial in fields such as environmental monitoring, pharmaceuticals, and food safety.In practice, polarographic analysis (极谱分析) typically involves the use of a dropping mercury electrode (DME) or a static mercury drop electrode (SMDE) as the working electrode. The sample solution is placed in an electrochemical cell, and a potential is applied across the electrodes. As the potential is varied, the current response is recorded, resulting in a polarogram. The shape and characteristics of this polarogram provide valuable information about the redox behavior of the analyte, enabling chemists to deduce its concentration and other relevant properties.Moreover, polarographic analysis (极谱分析) can be coupled with other techniques to enhance its capabilities. For instance, it can be integrated with chromatographic methods to separate complex mixtures before analysis. This combination allows for more accurate and reliable results, especially when dealing with samples containing multiple components that may interfere with the electrochemical measurements.The versatility of polarographic analysis (极谱分析) extends beyond simple ion detection. It can also be employed to study reaction kinetics, mechanistic pathways, and even to investigate the properties of novel materials. Researchers are continually exploring new applications for this technique, including its use in biosensors and nanotechnology.Despite its many advantages, polarographic analysis (极谱分析) does have some limitations. For instance, the use of mercury in certain configurations raises environmental and health concerns, prompting researchers to seek alternative electrode materials. Additionally, the presence of interfering substances in complex matrices can complicate the analysis, requiring careful method development and validation.In conclusion, polarographic analysis (极谱分析) is an invaluable tool in the field of analytical chemistry. Its ability to provide sensitive and specific information about chemical species in solution makes it essential for a wide range of applications. As technology advances and new materials are developed, the future of polarographic analysis (极谱分析) looks promising, with continued innovation expected to expand its reach and effectiveness in scientific research and industry.