Atomic Absorption Spectrophotometer, BNAAS-A3081G
Advanced circuit design.Adopting large-scale programmable logic arrays.12C bus technique of chips.Brand outlets and electrical connectors with high reliability and quality.Graphite furnace of high sensitivity controlled by digital power.New design of flame atomizer. The graphite tube has long using time. The workstation adopts expert database information system which can support fast and accurate detecting information and methods. The workstation adopts expert database information system which can support fast and accurate detecting information and methods. The operation of the worksta-tion is simple.| Optical system | |
| Wavelength range | 190nm-900nm |
| Monochromator | C-T type of eliminating aberration monochromator |
| Dispersion elements | Plane diffraction grating，1800 lines/mm，indented area（40×40）mm2 |
| Spectral bandwidth | 0.1nm, 0.2nm, 0.4nm, 1.0nm, 2.0nm for option |
| Wavelength precision | The whole waveband is better than ±0.15nm |
| Wavelength repeatability | The whole waveband is <0.10nm |
| Resolution | Copper lamp 324.7nm0.2nm and bandwidth deviation within ±0.015nm |
| Baseline drift | 0.004A/30min |
| Element lamp holders | Four lamps can auto-switch without manual-adjustment |
| Detectors | High sensitivity, wide spectral range photomultiplier tube |
| Flame Atomization System (FAS) | |
| Concentration（Cu） | 0.02ug/ml/1% |
| LOQ （Cu） | 0.006ug/ml |
| Burner | 100mm, single-slit titanium metal burner, which is air-cooled pre-mixed type |
| Precision | RSD≤0.8% |
| Sprayer | High efficiency glass sprayer |
| Atomization chamber | Corrosion-resistant plastic atomization chamber |
| Position adjustment | The auto-setting of flame burner height and position |
| Safety measures | Various of automatic safety protection function |
| Graphite Atomization System (GAS) | |
| Characteristic statistic（Cd） | 0.5×10-12g |
| LOQ (Cd) | 1.0×10-12g |
| Precision | RSD≤1.5% |
| Heating range | Room temperature~3000℃ |
| Heating operation methods | Power control method for dry ashing stage, max power light control for atomization stage |
| Temperature control precision | ≤1% |
| Heating rate | >2000℃/sec. |
| Heating condition setting | Up to 11 programs, ramp heating , stage heating and max power heating |
| Safety protection | Functions of argon undervoltage instruction, waterflow discharge cooling, overheating or overflow alarm and auto-protection. |
| Background Subtraction | |
| Back subtraction of deuterium lamp | 1Ahour≥50times |
| Data Processing | |
| Measuring method | Air-acetylene flame method and atomic absorption method for hydride generator |
| Concentration calculate method | Standard curve method(1~3 times curve）, standard mixing method |
| Repeat measuring times | 1~20 times，repeatedly measure and calculate the average data and automatically get the standard deviation and relative deviation. |
| Result printed | Parameter printed, data results printed and exported to Excel, graphics printed and summary report. |
1 The structure designation of integrated flflame atomizer and graphite furnace atomizer realizes the auto-switching between them.
2 The lamps can auto switch the turret, auto adjust the power and optimize beam position.
3 It can preset and optimize the working condition of the hollow cathode lamp so that convenient to detect multi elements.
4 Automatic setting for flflow, auto-ignition and flflameout automatic protection.
5 Automatic adjustment for negative high-voltage and lamp current.
6 Automatic setting for the best flflame height and atomizer position, while select the best analyzing conditions and make sure the analysis results reliable.
7 Automatic switching of spectrum bandwidth, 0.1nm, 0.2nm, 0.4nm, 1.0nm, 2.0nm for option.
8 Automatic control for wavelength scanning and peak searching.
9 The automatic injector is easy to operate with high accuracy, automatic control, remote monitoring and can operate without manual monitoring, thereby improving the working efficiency and reducing the operation error.
The reliable safety protection system protects the operators safety all-round.
- Reliable position identify.
- Real-time monitoring for abnormal pressure
- Real-time monitoring for flame
- Emergency brake button for accidents
- Acetylene leak protection system
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