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AA-7090 Series Atomic Absorption Spectrometer




Product Introduction

AA-7090 flame and Zeeman graphite furnace tandem analyzer,with two background correction methods: longitudinal Zeeman effect correction and deuterium lamp correction

Transverse heating, longitudinal Zeeman effect graphite furnace, introduced from Australia. 

Magnetic field can be varied from a low of 0.6 to a high of 1.1 Tesla in increments of 0.1 Tesla 

8-Lamp automated lamp turret


Coded lamp recognition

High efficiency super lamp power supply

The burner head height can be automatically adjusted

Programmable gasbox

Protection gas saving system, high efficiency & reduce your cost


Technical Specifications of AA-7090


1.    Optics


Wavelength Range: 190nm~900nm


Bandwidth: 0.1, 0.2, 0.4, 1.0 and 2.0nm, automatic switch Czerny-Turner Grating Mono-chromator


Wavelength Accuracy/Indication Error: ±0.1nm Wavelength Repeatability: ≤0.05nm


Grating: 1800 lines/mm Blaze Wavelength: 250nm


Baseline Stability: Static baseline stability≤0.002A/30min, dynamic baseline




Resolution: Better than 0.1nm


2.    Flame System


Characteristic Concentration of Cu: ≤0.02 μg/mL/1% Detection Limit: ≤0.003 μg/ml




Burner Head: Switchable 50 mm and 100 mm titanium burner head,


titanium nebulizer and high performance glass nebulizer


Position Control: Optimization of height and angle, flame and hydride switch within one min


3. Graphite Furnace System


Characteristic Concentration of Cu: ≤0.5×10-12 g


Detection Limit: ≤1×10-12g




Temperature Control: Max 20 step temperature program. 3 modes of temperature rise: step, slope and flat.


Heating Mode: power heating Heating Rate ≥2500℃/s


4. Background Correction


Background correction is available for both flame and graphite furnace methods. Deuterium lamp for flame. deuterium lamp or Zeeman for graphite furnace.


Correction Mode: Deuterium lamp, Zeeman Correction Capability:


a)  Deuterium lamp: When background absorption approaches 1.0 Abs, the instrument is capable of a background correction of 60 times or more.


b)  Zeeman: When background absorption approaches 2.0 Abs, the instrument is capable of a background correction of 100 times or more.


5.    Data Processing


Measurement Methods: Flame absorption, flame emission, graphite furnace, and hydride method.


Analysis Method: Linear fitting, nonlinear fitting, standard addition method. Printing Output: Calibration curve, spectrum, analysis conditions, analysis parameters, and analysis results can be automatically stored and printed.


6.    Dimensions: 1000(L) mm×610(W) mm×510(H) mm, 150 kg


7.    Power: 220V/50Hz, main unit 200W, graphite furnace 4KW

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