AAS7000 series atomic absorption spectrophotometer is widely used in various fields like gold, petrochemical, geology, medical, environmental protection, scientific research, agriculture, disease control, food, materials science, commodity inspection and so on. At present, the instruments can analysis more than 70 kinds of elements. It play a very important role in trace elements’ analysis.
FEATURES
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Advanced optical system
- The suspension design of optical system, vibrate and change of environment temperature won’t affect its stability. (Patent number: ZL200620023296. X)
- It takes the lead in adopting 1800/mm diffraction grating, sufficient energy, and high resolution.
- The single short light optical system can have a sufficient power to get a lower detection limit to arsenic, selenium.
- The well designed tungsten lamp and self-absorption background technology can ensure a more accurate calibration results.
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The world’s first integrated design
- The careful integrated design, install the flame atomizer, graphite oven and power inside a host, achieve a miniaturization instrument. (Patent number: ZL200620023298.9).
- The optimized power technology extends lamp’s service life.
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Automatic quickly switch
- Convenient switchable workbench can switch flame, graphite oven automatically or manual operation automatically and quickly. (Patent number: ZL200620023298.9)
- Optimized power technology to extend the life of the lamp.
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Reliable safety protection system
- The Safe and reliable control alarm device ensure which can ensure hollow cathode lamp current protection.
- Gas / under-voltage to protect air, gas leakage alarm, overheat graphite furnace and flame under abnormal protection.
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Excellent scalability
- It can support ceramic heater hydride sound device, to achieve the ultra-accurate analysis of Pb, Se, Hg, Bi, Sb, Sn.
- It can also be equipped with graphite furnace auto sampler, automatic configure with standard solution, and achieve fully automatic analysis.
- Then can optional with flame atomic absorption auto sampler, system of nitrous oxide and acetylene gas, and analysi s more than 30 kinds of high-temperature elements.
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High automation
- It can automatic wavelength positioning, automatic slit switching, lamp current, automatic gain setting which indicators can all reach international advanced level.
- Six lamps turret rotation units are fully automatically controlled by computer, rapid positioning, automatically select elements lamp.
- Truly achieve automatically and a uto-order analysis more than six elements.
- Characterized with automatic ignition, automatic gas flow control, and leak alarm.
| Model | Configuration | Type |
| AAS7003 Atomic Absorption Spectrophotometer | Hose, flame, graphite furnace | Automatic |
Technical parameters
- Optical system
| Wavelength range | 190 ~ 900nm |
| Monochromator | C-T grating monochromator |
| Wavelength repeatability | ≤0.1nm (AAS-7002, AAS-7003)
≤0.2nm (AAS-7000, AAS-7001) |
| blaze wavelength | 250nm |
| Resolution | better than 0.3nm |
| Spectral Bandwidth | 0.1, 0.2, 0.4, 1.0, 2.0 nm five-speed auto switching (AAS-7002, AAS-7003) |
| Wavelength accuracy | ± 0.2nm |
| Grating grooves | 1800 / mm |
| Baseline stability | ≤ ± 0.004A/30min (dynamic),
≤ ± 0.002A/30min (static) |
- Flame analysis
| Cu characteristic concentration | ≤ 0.02 μg / ml |
| Precision RSD | ≤ 1% |
| Position adjustment | Best regulation for height and angle, replace Flame / hydride in 1min. |
| Detection limit | ≤ 0.005 μg / ml |
| Combustion head | 50* 100mm interchangeable all-titanium burner head, all-titanium spray chamber |
- Graphite furnace analysis
| Cd features volume | 0.5×10－12g |
| Temperature range | room temperature~3000 ℃ |
| Temperature program | Temperature program up to 20 bands, ladder, ramp, Maintain the three kinds of heating methods. |
| Heating modes | maximum power heating and light-controlled rapid heating |
| Detection limit | 0.5×10－12g |
| Precision RSD | ≤ 2% |
| Ramp rate | ≥ 2000 ℃ / sec. |
