Wayeal Flame Atomic Absorption Spectroscopy AAS Atomic Absorption
Spectrophotometer Machine for Metal Analysis
Introduction of Atomic Absorption Spectrophotometer
Atomic absorption spectrophotometry analyzes the concentration of
elements in a liquid sample based on energy absorbed from certain
wavelengths of light (usually 185 to 900nm). Atomic absorption
spectrophotometers typically include a flame burner to atomize the
sample (most commonly a hollow cathode lamp), a monochromator and a
photon detector. Depending on the model, some atomic absorption
spectrometers are equipped with a turret or fixed lamp socket that
can hold multiple lamps (up to eight) to reduce downtime between
samples or allow for sequential analysis.
Technical Datas of Atomic Absorption Spectrophotometer AA2300
| Wayeal Flame Atomic Absorption Spectroscopy AAS 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
Foods and Beverages – In synthetic processed foods, metal pickup takes place due to
contact with processing equipment and catalytic conversions.
Consumer awareness on food safety is increasing by the day so
manufacturers have to ensure that the trace metals do not exceed
the permissible limits and this requires rigorous quality control
through atomic absorption spectroscopy and other sophisticated
instruments.
Oil and Petroleum – Both edible oils and mineral oils require refining before
consumption. Such refining operation can involve distillation as
well as catalytic refining. Uptake of metals during such operations
can lead to deterioration of performance or consumer hazards. Trace
metal analysis of engine oil provides useful diagnostic information
on the wear and tear of engine parts.
Agriculture – Trace metal constitution of soils in addition to their acidic or
basic nature is essential to establish their productivity and
nutrient value. Trace metal composition of plants (leaves, stems
and roots) gives a fair idea on how the uptake of minerals gets
distributed under different growth conditions
Forensics – Trace metal analysis provides valuable information on specimens
such as stomach contents for food poisoning, paint chips, fibres and hair strands collected from the scene of a crime.
