Overview
YOKE 3624AA Graphite Furnace Atomic Absorption Specphotometer is a single beam of light analysis instrument using a graphite furnace Atomizer with a wavelength range of 185nm to 900nm. The instrument is designed for ease of operation and economy of use, and has a unique anti-corrosion design. The injection process can be visually observed through the software.
Features
1. Easy Operation, Fast Response, Low Cost and Simple Maintenance.
2. Adopt a unique anti-corrosion design.
3. Both deuterium lamp and self-priming full-band Background correction technology can automatically fine-tune the lamp position to ensure the background deduction effect.
4. Adopt 4/8 lamp stand 360 ° automatic swirl/spin switching design, support one lamp work, one lamp preheating, automatic adjustment, can automatically adjust the optimized working parameters and analysis conditions.
5. High performance Hollow cathode lamp can be configured.
6. Automatically control wavelength scanning and automatically seek peak positioning.
7. Adopt reliable transverse heating graphite furnace technology to achieve uniform temperature of graphite tubes.
8. Various heating temperature control methods: power control is used in the drying ashing stage, and light control maximum power is used in the atomization stage. Heating methods include slope heating, step heating and maximum power heating.
9. Equipped with the graphite furnace sampling visual system, the built-in stable and reliable observation system can intuitively and clearly observe the sampling process on the software without affecting the performance of the host.
10. Automatic sampler can be used for effective analysis.
Principle
The instrument is based on atomic absorption spectroscopy (AAS) analysis principles. The sample is programmed to heat up (drying, ashing, atomization) in a graphite furnace, and the measured elements are converted into ground state atomic vapors, which selectively absorb specific wavelengths of light. The instrument quantifies the content of elements in the sample by measuring the degree of light absorption and comparing it with standard Linear dispersion. Its unique lateral heating technology ensures the uniformity of the temperature of the graphite tube, while deuterium lamps and self-priming Background correction technology are used to deduct background interference and improve analytical accuracy.
Applications
Environment monitoring, food safety, drug inspection, geology and minerals, metallurgy and chemical industry, medical and health, scientific research and education
Steps
1. Turn it on and preheat and initialize the instrument.
2. Install and debug the high-performance Hollow cathode lamp of the required elements, and the instrument can automatically switch the lamp position and adjust the parameters.
3. Optical inspection parameters such as wavelength and Light spectrum Bandwidth are analyzed through software settings, and automatic peak finding and positioning are carried out.
4. Set the graphite furnace heating program (temperature, time and heating method of each stage of drying, ashing and atomization).
5. Sample injector (manual or automatic) is used to inject the sample into the graphite tube, and the sampling process can be observed through the visual system.
6. Start the analysis program, and the instrument automatically completes the heating atomization, Background correction, and data collection process.
7. After the analysis is complete, process the data, plot the standard Linear dispersion, and calculate the sample concentration.
8. Conduct necessary instrument cleaning and maintenance.
Notice
• Please read the instrument instruction manual carefully before operation and receive relevant training.
• Ensure that the power supply is stable and well grounded.
• The high-purity argon and other gases used must meet the purity requirements, and the gas circuit connection must be sealed without leakage.
• Consumables such as graphite tubes and graphite cones are wearing parts and need to be checked and replaced regularly. Pay attention to the method during installation to avoid damage.
• Sample pretreatment should be thorough to avoid background interference or damage to graphite tubes due to high salt or high organic matter content.
• The injection amount should be accurate and ensure that the sample is injected into the center of the graphite tube.
• During the operation of the instrument, the temperature of the graphite furnace is extremely high, and it is strictly forbidden to touch it. Pay attention to burns and fire prevention.
• Keep the laboratory environment clean to avoid dust affecting the Optical inspection system.
• Periodic instrument performance checks (e.g. Wavelength Accuracy, Baseline Stability, Detection Limits, etc.)
• When the instrument is not in use for a long time, it should be shut down according to the procedures and maintained well.
