AAS

AA-7003 Automatic Flame/Graphite Furnace Atomic Absorption Spectrometer

  • Increased stability from the suspension system of the optical system. Mild external influences and ambient temperatures have no effect on the instrument’s stability.
  • One of the most compact AAS in the world. The AA-7000 series combines the flame atomic absorption spectrometer, graphic furnace atomic absorption spectrometer, optical system, atomizer, graphic furnace power supply, and electronics all into one unit.
  • Long lasting nebulizers and burning heads. Using aero-space technology, pure industrial titanium nebulizers and burning heads are casted using a paraffin method. As such, they resist corrosion and oxidation and are capable of withstanding high temperatures.
  • 1800 grooves/mm diffraction grating for higher resolution and higher energy
  • Deuterium-lamp and background correction increase the accuracy of calibration results
  • Reliable safety and alarm devices for lamps, graphite furnance, and atomizer
  • Optional HG-01 hydride generator to analyze elements, such as As, Pb, Se, and Pb.

    Features

    • · PC controlled instrument and data-processing 
    • · Automatic wavelength positioning, slit switching, and lamp current and gain setup. all of which can be  completed in under 40 seconds.
    • · PC controlled six-lamp rotating tower which can automatically select element lamp to analyze up to 6 elements in one sample  
    • · Automatic fire ignition with gas flow and leakage automatic alarms
    • · Optional nitrous oxide/C2H2 systems to analyze more than 30 elements that require high temperatures.

     

    Technical Specifications

     

    Spectrophotometric System

     

    Wavelength Range: 190 – 900 nm  

    Spectral Bandwidth: 0.1, 0.2, 0.4, 1.0, 2.0 nm, with 5 second automated switching 

    Monochromator: C-T grating monochromator

    Grating: 1800 / mm

    Wavelength Accuracy: ± 0.2 nm

    Wavelength Repeatability: better than 0.1 nm

    Static Baseline Stability: ≤ ± 0.002 A/30min
    Dynamic Baseline Stability: ≤ ± 0.004 A/30min

    Blazed Wavelength: 250 nm

    Resolution: better than 0.3 nm

    Background Correction: > 50 times

     

    Flame Analysis

     

    Cu Characteristic Concentration: ≤ 0.02 μg/ml
    Detection Limit: ≤ 0.005 μg/ml
    Precision: ≤ 1% RSD

    Burner Heads: 50 mm and 100 mm interchange titanium burner heads, titanium atomizer chamber

    Position Adjustment: Adjusting mechanism for the best vertical positions and the rotation of the burner, takes one minute to switch between flame and hydride generation.

     

    Graphite Furnace Analysis

     

    Cd Characteristic Quantity: 0.5 × 10-12g
    Detection Limit: 1.0 × 10-12g
    Temperature: Room temperature – 3000 ℃
    Temperature Programming: Up to 20 steps. Heating Modes: constant, steps, slope
    Heating Rate: ≥ 2000 ℃ / sec

     

    Data Processing
    Measurement Modes: flame absorption, flame emission, graphite furnace, hydride generation.
    Analytical Methods: linear, nonlinear, standard addition method.
    Printable Output: Calibration curve, the signal spectrum, instrument conditions, analysis parameters and analysis results (automatically stored and printed).

     

    Graphite Furnace (with Integrated Power Supply)
    Dimensions (L x W x H): 880 mm x 540 mm x 450 (H) mm

    Weight: 125kg
    Power: ~220 V, 50 Hz. Main Instrument: 200 W, Graphite furnace: 4 KW

     

    Our AAS Complete Set

     

    1. Main Unit (selectable)

    2. Computer, printer, specialized software

    3. Gas source: air compressor, high-purity argon, high-purity acetylene gas (preparation required)

    4. 4 Element lamps (based on selection)

    5. Hydride generator (optional)

    6. Graphite furnace auto-sampler (optional)

    7. Graphite furnace cooling system (optional)

    8. Spare parts and specialized tools

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