RS PRO RF Field Emission Detector Model No 1065307

RS PRO RF Field Emission Detector Model No 1065307 is a specialized analytical instrument used in gas chromatography (GC) to detect and quantify trace amounts of gases or volatile compounds in a sample. It is particularly useful in applications where high sensitivity and selectivity are required for detecting low levels of analytes.

The RF Field Emission Detector is a type of non-destructive detector, meaning that it does not consume the sample during the analysis. Instead, it relies on the detection of ions generated when the sample molecules are ionized by an electric field. Here's how the RF Field Emission Detector works:

Ionization: The sample is introduced into the GC column, where it is separated into its individual components based on their chemical properties and affinity to the column's stationary phase. As the analyte molecules exit the column, they pass through a metal filament or emitter, often made of tungsten or rhenium.

Field Emission: The metal filament is maintained at a high electric potential, causing it to emit electrons via field emission. These emitted electrons form an electron cloud around the filament.

Ionization by Electron Capture: As the sample molecules pass close to the electron cloud, some of them capture electrons, becoming negatively charged ions. This process is known as electron capture ionization.

Detection: The negatively charged ions are accelerated towards an electrode or collector, where they create an electric current proportional to the number of ions detected. The current is then amplified and recorded, producing a chromatogram that represents the concentration of the analyte over time.

The RF Field Emission Detector offers several advantages in gas chromatography:

High Sensitivity: The detector can achieve extremely low detection limits, making it suitable for trace analysis of volatile and semi-volatile compounds.

Wide Linear Dynamic Range: The RF Field Emission Detector can handle a broad range of analyte concentrations without signal saturation.

Selectivity: The detector is highly selective, as it primarily responds to analytes that are capable of capturing electrons during ionization.

Non-Destructive: Unlike flame ionization detectors (FID) or mass spectrometers, the RF Field Emission Detector does not consume the sample, allowing further analysis or retesting if needed.

In summary, the RF Field Emission Detector is a powerful analytical tool for gas chromatography, providing high sensitivity and selectivity for detecting trace levels of volatile compounds in various applications, including environmental monitoring, pharmaceutical analysis, and forensic investigations. Its ability to deliver precise and reliable data makes it a valuable asset in modern analytical laboratories.

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