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Atomic Absorption Spectrophotometer, Model AAS-4200

The AAS-4200 Atomic Absorption Spectrophotometer Fully Automated Flame & Graphite Furnace System is a high performance automated instrument designed to meet the requirements of the modern laboratory.

Technical Specifications

Spectrometer System

Wavelength range: 185nm -910nm
Light Source: Hollow cathode lamp (HCL), Deuterium Arc lamp (D2)
Modulation: Square Wave Pulse
Modulation frequency: 100Hz Self reversal (SR) background, 400Hz Deuterium Arc (D2) background

Monochromator

Grating: 1800 grooves/mm diffraction grating
Blazed Wavelength: 250nm
Focus: 300nm
Bandwidth: 0.1nm, 0.2nm, 0.4nm, 1.0nm, 2.0nm (Software selectable)
Scan mode: Automatic
Photometric Type: Single Beam
Wavelength Accuracy: ± 0.15nm
Wavelength Resolution: 0.2nm ± 0.02nm
Wavelength Reproducibility: < 0.05nm
Baseline Stability: 0.005Abs/30min
Background Correction: Deuterium Arc (D2) 1.0Abs, Self Reversal (SR) 3.0Abs

Flame Analysis

Flame Types: Air/Acetylene, Nitrous Oxide/Acetylene, Air/Propane (LPG)
Sensitivity (Cu): 2ug/ml Absorption >0.28Abs
Characteristic Concentration: Cu < 0.02ug/ml, Ba < 0.15mg/ml (N20/Acetylene)
Detection Limit: Cu < 0.004ug/ml
Repeatability: Cu < 0.7% (Air/Acetylene Flame); Ba < 1.0% (Nitrous Oxide/Acetylene Flame)
Burner heads: Titanium Alloy
Nebuliser: High efficiency glass, Acid proof available as an option
Pre-mix Chamber: Corrosion Resistant
Atomiser Selection: Automatic changeover (AAS-4200), Manual (AAS-3800)
Safety Features: Burner identification, Flame Sensor, Gas Leak Sensor, Low Gas Pressure Sensor, Drain Trap Sensor, Power Loss Protection

Graphite Furnace Analysis

Graphite Head: Transversally Heated
Temperature Range: Ambient – 3000°C
Heating Program: Up to 10 steps. Drying, Ashing, Atomisation, Cleaning
Feedback: Voltage and Optical temperature control feedback
Sensitivity (Cu): 50ng/ml Absorption > 0.40Abs
Detection Limit: Cd < 0.004ng/ml
Repeatability: Cu < 2.0%, Cd < 2.0%
Graphite Tubes: Pyrolytically Coated with Platform
Sample Size: Up to 20ul
Graphite Cooling: Water Circulator Available
Safety Features: Argon Pressure Sensor, Water Flow Sensor, Over Temperature Sensor, Broken Tube Protection

Data Processing

PC System: PC, Windows Operating System
Operating Program: AA Win 3.0 software
Analytical Methods: Flame AA, Flame AE, Graphite Furnace, Hydride Generation
Readout Mode: Continuous, Peak Height, Peak Area
Calibrations: Multi-Standard Calibration, Standard Addition, Interpolation
Data Storage: Analytical results, instrument and measurement parameters, signal profile, calibration curve

Power Requirements

Main Unit: 220VAC 50/60Hz
Graphite Power Supply: 220VAC 50/60Hz Instantaneous power 7KW

Dimensions

Main unit: 110cm x 54cm x 54cm 75Kg
Graphite Power Supply: 50cm x 54cm x 54cm 70Kg

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