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Beijing Century Chaoyang Technology Development Co., Ltd
High precision carbon isotope analyzer for carbon dioxide
NegotiableUpdate on 05/07
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Overview
The high-precision carbon isotope analyzer for carbon dioxide is a series of products such as Picarro G2131-i, which is represented by Century Chaoyang. It uses Nobel Prize level technology - cavity ring down spectroscopy (CRDS) to achieve trace isotope analysis
Product Details
The high-precision carbon isotope analyzer for carbon dioxide is a scientific instrument used to accurately measure the carbon isotope ratio in carbon dioxide molecules. This analyzer has wide application value in environmental science, geochemistry, ecology, and other interdisciplinary fields. This article will provide a detailed introduction to the working principle, key technologies involved, operating steps, and analysis methods of this analyzer.
The Picarro G2131-i series products, represented by Century Chaoyang, use Nobel Prize level technology - cavity ring down spectroscopy (CRDS) to achieve trace isotope analysis
Workflow Unveiling:
Laser-induced resonance
Semiconductor laser emits 1.57 μ m near-infrared light (accurately matching CO2 absorption spectral lines)
The beam travels back and forth more than 3000 times in an optical cavity composed of three ultra-high reflection mirrors (reflectivity>99.9995%), with an equivalent optical path length of 20 kilometers
Molecular fingerprint capture
Due to the difference in molecular weight between CO2 and CO2, the absorption peak shifts by 0.07nm
The detector records the attenuation curves of light intensity at different wavelengths (decay time in μ s level)
Intelligent algorithm interpretation
Real time fitting of absorption spectra and calculation of C/C ratio
Temperature control accuracy ± 0.001 ℃, eliminating environmental interference
working principle
The working principle of high-precision carbon isotope analyzer for carbon dioxide is mainly based on gas isotope mass spectrometry technology. In the analysis process, firstly, the carbon dioxide in the sample is transformed into a gas form suitable for measurement through high-temperature cracking or specific chemical reactions. Subsequently, these gases are introduced into the chromatographic column for separation to ensure accurate differentiation of different carbon isotopes (such as ¹ ² C and ¹ ³ C). Finally, the separated isotope gases enter the mass spectrometer, and their respective abundances are determined by measuring their mass to charge ratios, thereby calculating the ratio of carbon isotopes (usually expressed as δ ¹³ C).
key technology
Gas isotope mass spectrometry technologyThis is the core technology of the analyzer, which allows for precise measurement of isotopes in gases. By using a mass spectrometer, ions of different mass numbers can be separated and measured to determine isotopic ratios.
Cavity ring down spectroscopy (CRDS) technologySome advanced analyzers, such as Picarro G2131-i, use this technology. It uses near-infrared laser to measure the spectral characteristics of gas molecules at specific wavelengths, with sensitivity and accuracy.
High precision temperature and pressure control systemTo ensure the stability and accuracy of the measurement results, the analyzer is equipped with a high-precision temperature and pressure control system internally.
operating steps
Sample preparationCollect appropriate gas samples based on analysis requirements. This may involve collecting carbon dioxide from different environments such as the atmosphere, water bodies, or soil.
Sample processingPerform necessary preprocessing on the collected carbon dioxide samples, such as removing impurities, drying, etc., to ensure measurement accuracy.
instrument calibrationBefore using the analyzer, calibration is required to ensure the accuracy of the measurement results. This usually involves using standard gases with known isotope ratios for calibration.
sample analysisInject the processed sample into the analyzer and start the measurement program. The analyzer will automatically perform gas separation, isotope measurement, and ratio calculation.
Data interpretation and reportingAfter the analysis is completed, the instrument will generate a detailed report, including isotope ratios, measurement errors, and other information. These data are of great significance for understanding scientific research such as carbon cycling and environmental change.
analytical method
The high-precision carbon isotope analyzer for carbon dioxide mainly uses isotope ratio method for analysis. By measuring the isotopic ratio of ¹³ C to ¹² C in the sample (δ ¹³ C), information about the source, migration, and transformation processes of carbon in the sample can be obtained. This method is particularly important in environmental science as it can help scientists track the pathways of carbon flow in ecosystems, thereby better understanding complex processes such as climate change and biogeochemical cycles.
The high-precision carbon isotope analyzer for carbon dioxide is a scientific tool that plays an important role in multiple disciplinary fields. By gaining a deeper understanding of its working principles, key technologies, operational steps, and analytical methods, we can better utilize this tool to explore the mysteries of nature.
