Deuterium and Tungsten Lamp Equipped Double Beam Atomic Absorption
Spectrophotometer AAS for Metal Analysis
Introduction of Atomic Absorption Spectrophotometer
Atomic absorption spectroscopy (AAS) is a spectroanalytical
procedure for the quantitative determination of chemical elements
using the absorption of optical radiation (light) by free atoms in
the gaseous state. Atomic absorption spectroscopy is based on
absorption of light by free metallic ions.
In analytical chemistry the technique is used for determining the
concentration of a particular element (the analyte) in a sample to
be analyzed. AAS can be used to determine different elements in
solution, or directly in solid samples via electrothermal
vaporization,and is used in pharmacology, biophysics, archaeology
and toxicology research.
Parameters of Atomic Absorption Specphotometer
| Double Beam Graphite AAS Atomic Absorption Spectrometer for Metal
Analysis |
| Wavelength range(nm) | 185-900nm |
| Wavelength indication error(nm) | ±0.15nm |
| Wavelength repeatability(nm) | ≤0.05 nm |
| Spectral Bandwidth | 0.1, 0.2, 0.4, 1.0, and 2.0nm |
| Zero Drift | ±0.002/30min |
| Instantaneous noise(Abs) | ≤0.002 Abs |
| Flame Atomizer | |
| Detection limit | Cu: ≤0.002μg/mL |
| Repeatability | RSD≤0.25% |
| Graphite Furnace Atomizer | |
| Detection limit(Graphite Furnance: Cd pg) | ≤0.3pg |
| Repeatability | RSD≤1.5 % |
| Heating temperature | room temperature -3000°C or so |
| Heating rate | 3000°C/s |
| Autosampler | |
| Injection bits | 108 |
| Linear | >0.999 |
| Injection volume | 1-200μL |
| Injection volume repeatability | ≤0. 1% |
| Result repeatability | ≤1.5% |
| Background correction | Deuterium lamp |
| Lamp position | 8 |
Features of Atomic Absorption Spectrophotometer AA2300
1. Stability: Double-beam system can automatically compensate the
light source drift and wavelength drift caused by the variation of
temperature (with the function of the eliminating the affection of
wavelength drift on the base line stability) and electronic circuit
drift so as to reach a good basic line stability.
2. Full-reflection dual-beam optical path, high optical path
stability
3. High precision of measurement: Gas path system is equipped with
precision pressure stabilizing and current stabilizing devices to
reach stable flame and low noise. Specially designed fine light
beam passes through the flame to ensure a high precision analytical
test and low characteristic concentration.
4. 8 lamp holders preheat simultaneously to improve detection
efficiency
Applications of Atomic Absorption Spectrophotometer
Food, medicine, environment, metallurgy, agriculture and disease
control
