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[Chemical Knowledge]：Detection Method and Analysis Technology of Benzene

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Benzene's Importance and Traditional Detection Methods

Benzene, as an important organic compound, widely exists in industrial production, chemical experiments and daily life. It is heavily used in the paint, solvent, plastic, rubber and other industries, but excessive exposure to benzene can cause health problems and even cause cancer. Therefore, the detection of benzene is particularly important.

Traditional benzene detection methods are mainly based on chromatographic techniques, such as gas chromatography (GC) and liquid chromatography (LC). Gas chromatography separates and detects the volatility of the sample, while liquid chromatography dissolves the sample in a liquid carrier and analyzes it. These methods have high sensitivity and accuracy, but require a lot of time and cost, and require professional operators.

In addition to chromatographic techniques, spectroscopic techniques are widely used in the detection of benzene. Ultraviolet-visible spectroscopy (UV-Vis) and infrared spectroscopy (IR) can identify benzene molecules by absorbing light of specific wavelengths. These methods are fast and simple, but the requirements for the sample are higher, and the interference factors are greatly affected.

Advanced Technology and Field Detection

With the continuous development of science and technology, more and more advanced technologies are applied to the detection of benzene, which provides us with a more convenient, fast and accurate method.

Among them, sensor technology is one that has attracted much attention in recent years. The use of sensors can realize real-time monitoring of benzene, without sampling and complex processing steps, greatly shortening the detection cycle. Various benzene detection sensors based on electrochemical, optical and biosensors are emerging, such as electrochemical sensors based on nanomaterials, surface enhanced Raman scattering (SERS) sensors and so on. These sensors have the advantages of high sensitivity, fast response and simple operation, and have a wide range of applications in environmental monitoring, industrial production and other fields.

With the continuous development of portable instruments, on-site detection technology has gradually matured. The emergence of portable gas chromatograph, portable mass spectrometer and other equipment, the detection of benzene can be carried out in the field, real-time, greatly facilitate the production site and environmental monitoring personnel.

The continuous development of benzene detection methods and analysis technology, from traditional to advanced, from laboratory to field, provides us with more choices. We can choose suitable detection methods according to specific needs and conditions to ensure the safe use of benzene and environmental protection.

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