TAS-986 Atomic Absorption Spectrophotometer  

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The TAS-986 is our company's highest-grade fully automatic atomic absorption spectrophotometer. All operations are controlled through the PC, with the AA-Win software based on a WINDOWS platform. The design of flame burner and graphite furnace in one compact unit enables automatic interchanging of two analytical methods. 

There are two background correction methods, self-reversal background correction and deuterium lamp background correction, to ensure the most precise analytical results. A self aligning eight-lamp turret makes for user-friendly multi-elemental atomic measurements. The unique furnace heating design ensures uniform heating and guarantee measurement accuracy. All around automatic safety precautions ensure reliable operations.

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Features

Fully automatic control

，The integration of flame burner and graphite furnace in one compact unit enables automatic interchanging between the flame mode and furnace mode using few simple keystrokes.

，Eight-Lamp turret for automatic positioning of each hollow cathode lamp.

，Automatic fuel gas(C2H2) flow rate adjustment to optimize combustion efficiency in element analysis.

，Automatic adjustment of burner height for optimized analysis conditions.

，Automatic Reflecting/Transmitting beamsplitter positioning (to lead the light of deuterium lamp into optical path) when the Deuterium Lamp Background Correction function is selected

，Automated wavelength scanning and peak-seeking

， Automatic switchover of spectral bandwidth (5 choices).

， Automatic negative voltage and lamp current adjustment, automatic AA and BG energy balance, automatic igniting and interlock protection in case of flameout.

Advanced Graphite furnace

，Uniformity of the graphite tube temperature reduces chemical interference and residue interference.

， The PC-controlled heating program offers a multitude of heating method choices. The optical temperature control ensures rapid heating and extends the life of the graphite tube.

　

Versatile UV-Win software

　　Safety Assurance

，Flame Monitoring: Constant monitoring. When accidental flameout occurs, an alarm is given and the acetylene flow is stopped immediately

，Pressure Monitoring: Constant air pressure detection. When abnormalities are detected, acetylene flow will be automatically cut off for safety fire extinguishing. The argon gas pressure monitor will disconnect the electricity to the graphite tube when an absence of the protective argon gas is detected.

，Cooling water flow monitoring: The power supply to the furnace will only be activated for heating when the cooling water flow is determined enough to cool down the furnace body. 

，Graphite Tube Fracture Protection: Power supply used for heating is automatically shut off and an alarm is given if a sudden graphite tube fracture is detected. 

 
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Specifications

　Optical System: Czerny-Turner(C-T) type monochromator.
　Wavelength range  　190nm ~ 900nm
　Spectral　bandwidth 　0.1 nm, 0.2 nm, 0.5nm, 1.0 nm, and 2.0 　nm. (5 steps, with automatic changeover)
　Wavelength accuracy 　+/-0.3 nm (automatic correction)
　Wavelength reproducibility 　0.2 nm
　Resolution 　over 0.3 nm
　Baseline Stability 　0.005A/30 min

 

　Flame analysis
　Sensitivity 　Cu 5µg/ml>0.850 Abs
　Burner Head 　Titanium alloy burner
　Nebulizer 　High-efficiency glass nebulizer
　Atomization Chamber 　Corrosion-resistant material
　Position Adjustment 　Automatic flame and furnace changeover
　Automatic flame burner optimum height setting
　Safety 　Automatic ignition of mixing air-acetylene gas 　with protection control.

 

　Graphite furnace analysis
　Characteristic Mass 　(Cd) 　0.8Pg
　Temperature Range 　Ambient - 2650＜C
　Heating 　voltage feedback control when drying and 　ashing                            
　optical temperature control when atomizing        
　Heating program 　up to 9 steps with choices of ramp, ladder and 　full-power heating

 

　Background correction 
　Deuterium Lamp 　Background 　Correction 　1.0 Abs
　Self-Reversal 　Background 　Correction 

　3.0 Abs

 

　Data processing

　Analytical method

 　flame AA, graphite furnace, hydride, and flame 　emission
　Determination 　method  　calibration curves (1~3 order), standard 　addition method

　Repetition times 

 　1~20 times with calculations of average value, 　SD and RSD
　Result Printout 　output of parameters, data, spectra and 　calibration curves

 

　Mainframe
　Light Source 　8 lamps, 2 lamps simultaneously lit (with one 　preheat)
　Power Supply 　220V/50Hz three-phase AC, 200W(mainframe), 　5000W(graphite furnace)
　Size 　mainframe 110cm x 50cm x 45cm, 75kg 
　graphite furnace power supply  system 50cm x 50cm 　x 45cm, 50kg

 

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Note: The TU-1800 features all the advanced functions of the TU-1800S, but is simplified by removing the selectable bandwidth feature. The TU-1800 will remain at 2.0 nm set spectral bandwidth while the TU-1800S can analyze using four different bandwidths.