Persee Analytics A3AFG – Combined Flame & Graphite Furnace Atomic Absorption Spectrophotometer

Persee Analytics A3AFG – The instrument is equipped with both Flame Atomiser and Graphite Atomiser as described above. Both configurations are installed into the instrument and can be changed over by a simple selection in the versatile AA- Win 3.0 software.

Features
  • AAWin software
  • Light source
  • Background correction
  • Optical system
  • Autosampler
  • Flame mode
  • Graphite furnace temperature control
  • Graphite tube

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Persee Analytics A3AFG – The instrument is equipped with both Flame Atomiser and Graphite Atomiser as described above. Both configurations are installed into the instrument and can be changed over by a simple selection in the versatile AA- Win 3.0 software.

Features

AAWin software

AAWin Software is a powerful and intuitive software product designed to allow control and data acquisition from the A3 series Atomic Absorption Spectrometer. The AAWin software allows the Analyst to control all aspects of their analytical method whilst providing an extensive range of tools for data collection, storage, and interpretation.

Light source

Automatic 8 Hollow Cathode lamp turret controlled and optimized by the AAWin software. The operating lamp current and warm-up lamp current can be individually controlled to eliminate drift commonly associated with lamp warming.

Background correction

D2 lamp background correction system fitted as standard to all configurations. High energy D2 lamp and adjustable beam splitter mirror are optimized by the AA-Win 3.0 software. Self-Reversal background correction system fitted as standard to all configurations. The high-performance background system uses the same hollow cathode lamp as installed for the analysis. Minimum extra components are required and optical alignment is very simple. Self-reversal can be used for any element at any wavelength making it extremely versatile.

Optical system

High-precision minimal optics ensures maximum light throughput to the computer-controlled Czerny-Turner monochromator.

Autosampler

An optional accessory, the universal autosampler, is conveniently mounted on the front of the A3 instrument. It automatically introduces standard and unknown samples to the atomizer for analysis..

Flame mode

The flame atomizer offers three flame options. All three flame configurations offer coded burners for full safety protection.

Air/Acetylene: The high sensitivity (Cu 2ppm >0.280abs) is due to the efficiency of the fixed-position glass nebulizer fitted as standard. An acid-resistant replacement is available as an option. The flame can be easily set from blue lean flame through stoichiometric to fuel rich using computer control.

N2O/Acetylene: This flame configuration is used to measure elements less prone to ionization such as Aluminum, Tin, Titanium, Calcium, Vanadium and Molybdenum. Switching from Air/Acetylene to N2O/Acetylene to Flame Off is fully controlled by the AAWin3.0 software.

Air/Propane (LPG): Due to the Low temperature of the flame it is ideal for analyzing alkali metals such as Potassium, Sodium and Lithium, especially when used in the emission mode. Some remote areas of the world have difficulty obtaining Acetylene gas of a high enough purity to operate the flame correctly, LPG can give a real alternative and offer comparable results for most elements throughout the wavelength range.

Graphite furnace temperature control

The temperature of the transversely heated graphite tube is accurately controlled by means of a precision feedback system and has been designed to reduce analytical problems normally associated with this type of technique.

Graphite tube

Pyrolytically coated graphite tubes are used as standard and are manufactured to improve performance as well as increase the analytical life. Platform graphite tubes are supplied as standard and will accept volumes up to 50ul. Non-platform graphite tubes are also available as an optional extra.

Safety features
  • Pressure monitoring for all gases
  • Burner Identification
  • Flame sensor
  • Drain trap level sensor
  • Gas leak detector
  • Overpressure in premix
  • Safety cut-off switch
  • Water flow sensor
  • Over temperature sensor
  • Broken graphite tube protection
Principle

A3AFG is a highly sensitive analytical technique that can detect trace amounts of elements in a sample. The elements are heated and atomized in the pyrolytic graphite furnace, and become atomic vapour in the ground state, which selectively absorbs the characteristic radiation emitted by the hollow cathode lamp. Within a certain concentration range, its absorption intensity is proportional to the content of the element to be tested in the test solution.

Applications

A3AFG can be used for a wide range of applications including environmental science, agriculture, food science, pharmaceuticals etc.

Environmental science

A3AFG can be used to analyze soil, water, and air samples for the presence of heavy metals such as lead, mercury, and cadmium. This information is critical for understanding the impact of human activity on the environment and for monitoring compliance with environmental regulations.

Agriculture

A3AFG is used to analyze soil and plant tissues for the presence of essential elements such as nitrogen, phosphorus, and potassium. This information is important for optimizing crop yields and for ensuring that plants have the nutrients they need to grow.

Food science

A3AFG is used to analyze food samples for the presence of toxic elements such as arsenic and lead. This information is critical for ensuring that food products are safe for human consumption.

Pharmaceuticals

A3AFG is used to analyze drug formulations for the presence of impurities and contaminants. This information is important for ensuring that drugs are safe and effective for human use.

Specifications
Spectrometer System
Wavelength range 190-900 nm
Light source Hollow cathode lamp (HCL), Deuterium Arc lamp (D2)
Modulation Square wave pulse
Modulation frequency 100 hz self reversal (SR) background,
400 hz Deuterium Arc (D2) background
Monochromator 
Grating 1800 grooves/mm diffraction grating
Blazed wavelength 250 nm
Focus 300 nm
Bandwidth 0.1, 0.2, 0.5, 1.0, 2.0, 5.0 nm
Scan mode Automatic
Photometric type Single beam
Wavelength accuracy ±0.15 nm
Wavelength resolution 0.2 nm±0.02 nm
Wavelength reproducibility <0.05 nm
Spectral bandwidth 0.5, 1.0, 2.0, 5.0 nm
Baseline stability 0.005 A/30 min
Stray light ≤0.12 %T (220 nm NaI, 340 nm NaNO2)
Background correction Deuterium Arc (D2) 1.0 Abs,
Self Reversal (SR) 3.0 Abs
Flame Analysis
Flame types Air/Acetylene,
Nitrous Oxide/Acetylene,
Air/Propane (LPG)
Sensitivity (Cu) 2 μg/ml Absorption >0.280 Abs
Characteristic concentration Cu<0.02 μg/ml,
Ba<0.15 μg/ml (N2O/Acetylene)
Detection limit Cu<0.004 μg/ml
Repeatability Cu<0.7 % (Air/Acetylene Flame)
Ba<1.0 % (Nitrous Oxide/Acetylene Flame)
Burner heads Titanium alloy
Nebulizer High-efficiency glass,
Acid is available as an option
Pre-mix chamber Corrosion resistant
Atomizer selection Manual (A3F)
Automatic changeover (A3FG)
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-2650 ℃
Heating program Up to 10 steps. Drying, Ashing, Atomization, Cleaning
Feedback Voltage and optical temperature control feedback
Sensitivity (Cu) 50 ng/m Absorption>0.40 Abs
Detection limit  Cd<0.004 ng/ml
Repeatability Cu<2.0 %,
Cd<2.0 %
Graphite tubes Pyrolytically coated with platform
Sample size Up to 20μl
Safety features Burner Identification,
Flame Sensor,
Gas leak Sensor,
Low Gas Pressure Sensor,
Drain Trap Sensor,
Power Loss Protection,
Circulation Water (graphite),
Over Temperature Sensor (graphite)
Data Processing
Operating program AA Win Pro software
Analytical methods Flame AA, Flame AE,
Graphite Furnace,
Hydride Generation
Readout Mode Continuous, manual, 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 220 VAC 50/60 Hz 200 W
Graphite power supply 380VAC 50/60Hz,
instantaneous power 5 kW current rating 7 kW
Dimensions 
Main unit 44 x 21 x 21 in
165 lb
Graphite power supply 20 x 21 x 21 in
154 lb

 

Catalog Number Model Number Description
A3F 500F Flame (AAS) Atomic Absorption Spectrophotometer. A
data Data-coded air/Acetylene Burner is included
A3G 500G Graphite Furnace (GFAAS) Atomic Absorption
Spectrophotometer
A3FG * 500FG Combined Flame & Graphite Furnace Atomic
Absorption Spectrophotometer. A Data Coded
An air/Acetylene Burner is included.

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