APPLICATION
The AAS-7000 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
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.
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.
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.
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.
Excellent scalability
- It can support HG-01-type 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.
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.
AAS-7000 Series Summary
| Model |
Configuration |
Type |
| AAS-7003 |
Hose, flame, graphite furnace |
Automatic |
Set of atomic absorption spectrophotometer
- Host: optional model;
- Computer, printer, specialized software and anti-control interface;
- Air: air compressor; high purity argon, acetylene gas (self);
- Elements lamp: (according to user need to select);
- Hydride generator (optional);
- Graphite furnace auto sampler (optional);
- Graphite furnace cooling water tank (optional);
- Spare parts and special tools;
The superior Graphite Furnace System
Mature and advanced way of vertical temperature
Graphite furnace atomic transition temperature can reach 3000 ºC, in line with national standards for nickel, molybdenum, vanadium, cobalt and other elements of high-temperature graphite furnace atomic temperature requirements.
High Stability
The advanced optical systems ensure the instrument's high optical power, when detect with graphite furnace, the negative pressure lower about 100 ~ 200V than other domestic products under the same conditions (each element can reach this level), high signal to noise ratio ensure a stable data.
Maximum sample volume significantly increased
The specially designed graphite furnace increases the maximum injection volume to70 μL, which is conducive to multiple injections and low concentration samples.
High background correction capability
Equipped with continuous light (D2), self-absorption background correction system, which can correct up to 1.5A of background interference.
High-temperature heating rate
The heating rate is greatly increased due to the use of optical heating rate, fast atoms, improve analytical sensitivity and accuracy.
Uniform heating temperature and high-precision
The unique graphite furnace design ensures atomic effects of the isothermal time, for obtain accurate data to provide a guarantee.
A pioneering all-titanium spray combustion system
Uses high-tech aerospace, lost wax casting process titanium spray chamber and burner head. Has excellent resistance to corrosion, oxidation, aging, and high temperature, long service life;
Humanity design of sample inlet
The design of sample inlet reduces the sample error, which make sample injection easier, and ensure that even a manual injection can achieve good accuracy.
Advanced design of graphite furnace graphite
Graphite cone can be easily replaced after wearing down, to ensure the stability of the electrode conductivity, greatly improving the efficiency of instrumental analysis. (Patent No.: ZL2007 2 0104071)
Highly automated data processing workstation
Friendly interface:
Based on Windows XP platform, multi-language support, such as English, Korean, etc., can quickly and easily draw analysis. Powerful analysis capabilities and fault-tolerant samples, flexibility to modify the curve fitting equation
Report printing:
Flexible report printing, users can print according to the different choice.
Data management
To achieve the management of history and related follow-up treatment, including query, editing and other functions. Can download a variety of file formats and data files.
QA / QC control system
Automatically determine whether the result of the analysis is appropriate, if out of range, the system automatically re-measured in accordance with set requirements. About the system's QA / QC features include: standard deviation (SD) test, the relative standard deviation (RSD) detection, correlation coefficient testing, QC testing, baseline drift (sensitivity correction) test, the sample detection limit (automatic on-line dilution).
Instrument control functions
Automatic element lamps selecting, automatic wavelength scanning, automatic slit switching, lamp current automatically set, etc.
Condition Monitoring
Real-time dynamic monitor equipment working status of each component. Flame: to monitor the combustion head type (normal or high-temperature combustion head), to monitor water seal level, gas, the auxiliary gas switch, pressure, auxiliary gas current, acetylene gas leakage alarm. Graphite furnace: over-current protection, monitoring water temperature, water flow, gas pressure monitoring and protection.
Lighting time management
automatically record the time of element light.
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 ºC |
| 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 ºC / sec. |
Background correction
Flame and graphite furnace background correction can be all achieved.
Correction methods: deuterium lamp, self-absorption background correction (optional)
Correction capability: 1.5A background correction can be corrected, correction capability> 50-fold.
Data Processing
Measuring method: flame absorption, flame emission method, graphite furnace, hydride method.
Analysis: linear equations, nonlinear equations, the standard addition method. Print output: the calibration curve, the signal spectrum, instrument conditions, analysis parameters and results can be automatically stored and printed.
Graphite furnace power supply built-in integration host
Size: 880 (L) × 540 (width) × 450 (high) mm, 125kg.
Power supply: 220V, 50Hz, single-phase
Host: 200W, graphite furnace 4KW
Main Features
- Suspended advanced optical system design: the entire optical system installed in the semi-hanging floating optical base, which has good anti-seismic, anti-drift, strong light energy, and high stability.
- Gas automatic protection system: safety interlock protection and anti-tempering device; acetylene leak, air voltage, alarm and automatic power off and breathe under abnormal condition. Automatic switch 6 lamp turret, completely automatically controlled by a computer, rapid positioning, automatically select lights elements. Wavelength automatic positioning, slit switching and lamp current, gain automatically set, full band scan completed positioning within 45s.
- Spectral Bandwidth: 0.1, 0.2, 0.4, 1.0, 2.0 nm five-speed optional. With a flame emission measurement function, provide a variety of measurement method to potassium, sodium, lithium and other alkali metal. Efficient glass atomizer, atomization efficiency up to 38%, 5mg / L Cu solution absorbed luminosity can reach to 0.95A. All-titanium atomization firing system, anti corrosion, oxidation, high temperature, long service life, perfect matching of nitrous oxide / acetylene system, increase more than 30 kinds of high-temperature detection element analysis
- Well-integrated design: the flame atomizer, graphite furnace and graphite furnace power supply are all installed in one host, to achieve the miniaturization of the instrument.
- Excellent graphite furnace power supply design: graphite furnace atomic maximum power does not exceed 4KV, bring small disturbance.
- Advanced table design: two seconds to switch flame / graphite furnace, no need to adjust the optical path
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