What is the detection principle of the organic carbon analyzer?
Release time：2024-09-25
The detection principle of the organic carbon analyzer is mainly based on the process in which organic carbon in the sample is oxidized and converted into carbon dioxide (CO₂) at high temperatures, and the amount of CO₂ released during this process is quantified through precise measurement methods, thereby indirectly calculating the organic carbon content in the sample.
The detection principle of the organic carbon analyzer is mainly based on the process of organic carbon in the sample being oxidized and converted into carbon dioxide (CO₂) at high temperatures, and quantifying the amount of CO₂ released during this process through precise measurement methods, thereby indirectly calculating the organic carbon content in the sample. Specifically, the instrument usually employs thermal oxidation or catalytic oxidation as core steps. In thermal oxidation, the sample is placed in a high-temperature (usually above 500°C) oxidative environment, such as a combustion furnace with pure oxygen, allowing the organic substances in the sample to completely combust, converting them into gaseous CO₂ and water vapor. Subsequently, through a series of gas purification steps, such as condensation to remove water vapor and chemical absorption to remove other interfering gases, it ensures that only pure CO₂ enters the detector. The detector, such as a non-dispersive infrared (NDIR) detector, utilizes the absorption characteristics of CO₂ at specific infrared wavelengths to measure its concentration and convert it into the corresponding electrical signal. These electrical signals are amplified, processed, and calibrated, and can be directly displayed or output as the organic carbon content in the sample. The entire process achieves automation, high precision, and rapid detection, widely applied in fields such as environmental science, soil science, ecology, food science, and geology, providing important technical support for scientific research and industrial production.
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