Overview
YOKE 3638AA flame and graphite furnace method integrated machine atomic absorption spectrophotometer is a single beam of light analysis instrument, integrating flame and graphite furnace two atomizers, which can realize fast switching. The instrument has a wavelength range of 185nm-900nm, and has the characteristics of easy operation, fast Response speed, low use cost, and a unique anti-corrosion design, simple maintenance.
Features
1. Both deuterium lamp + self-priming full-band Background correction technology can automatically fine-tune the lamp position to ensure the background effect.
2. Adopt 8 lamp stands 360 ° automatic swirl/spin switching design, one lamp work, one lamp preheating, fully automatic adjustment, can automatically adjust the optimized working parameters and analysis conditions.
3. Automatic control wavelength scanning, automatic peak finding positioning. With automatic flow setting, automatic ignition, flame monitoring, gas leakage alarm, automatic flameout and other protection devices.
4. Adopt reliable transverse heating graphite furnace technology to achieve uniform temperature of graphite tubes. There are various heating temperature control methods, including power control and light control maximum power methods.
5. Equipped with a graphite furnace sampling visual system, with a built-in stable and reliable observation system, the sampling process can be observed intuitively and clearly on the software.
6. Automatically set the gas flow and select the appropriate combustion support ratio. Equipped with an all-titanium flame combustion device, it has the function of automatic adjustment of detection height and front and rear positions.
7. Nebulizer atomization effect is adjustable, spray is stable, Sensitivity is high.
8. Fast switching of flame/graphite furnace Atomizer can be achieved.
9. Automatic sampler can be used for effective analysis.
Principle
The instrument is based on the principle of atomic absorption spectroscopy (AAS). The sample is converted into ground state atomic vapor by flame or graphite furnace Atomizer. When the characteristic spectral lines emitted by the Hollow cathode lamp pass through the atomic vapor, they are selectively absorbed by the ground state atoms of the element to be measured. The content of the element to be measured in the sample can be determined by measuring the degree of absorption of the characteristic spectral lines. The instrument adopts a single beam of light design, and uses deuterium lamp and self-priming effect for full-band Background correction to eliminate interference.
Applications
It can be used in combination with a hydride generator to easily handle the diversity of analytical samples and meet the analysis requirements of various elements.
Steps
1. Power on and start the control software.
2. According to the analysis requirements, select the flame method or the graphite furnace method mode in the software.
3. Install and set the Hollow cathode lamp corresponding to the element to be tested, and the instrument 8 lamp holder can automatically swirl/spin switch and preheat.
4. Perform automatic wavelength scanning and peak-seeking positioning.
5. Set the analysis parameters (such as Light spectrum Bandwidth, gas flow, combustion ratio, graphite furnace heating program, etc.).
6. For graphite furnace analysis, the injection process can be observed through a visual system.
7. Sample measurement, the instrument automatically performs ignition, atomization, data collection and other processes.
8. After the analysis is completed, the instrument can automatically extinguish the fire and provide safety protection.
Notice
• The instrument has safety protection devices such as gas leakage alarm, and it is still necessary to ensure that the gas circuit is firmly connected and the environment ventilated well.
• When operating the Flame atomizer, please pay attention to the automatic ignition and flameout state to avoid misoperation.
• When using a graphite furnace, follow the correct temperature setting to protect the graphite tube and ensure analysis accuracy.
• Regular maintenance of Nebulizer, combustion head and other components to maintain atomization effect and instrument Stability.
• For best performance, it is recommended to use the high-performance Hollow cathode lamp recommended by the instrument.
• When using with Automatic sampler, make sure that the injection needle and sample tray are in the correct position.
