Description
Atomic Absorption Spectrophotometer is an integrated flame/graphite furnace atomization system where the graphite system is fully automatic. Flame temperature is continuously adjustable between 2300-2900ºC, which makes it possible to choose the best atomization temperature. Rich Oxygen Flame will not pollute the environment and is not harmful for human bodies. It’s a break-through in flame AAS analysis.
Feature
- The changeover of the integrated flame and graphite furnace atomizer is automatically controlled featuring easy operation and time saving which eliminates human labor
- To perform flame emission analysis, flame emission burner head can be installed for alkali metals as K, Na etc.
- Provided with automatic 6-lamp turret, automatic adjustment of lamp current and optimization of light beam position
- Parameters like Wavelength scanning, peak picking, change in spectral bandwidth, optimization of position parameters, automatic ignition and gas flow setting are done automatically
- The graphite furnace analysis is fully reliable and automatic where it is adopting FUZZY-PID and dual curve mode light-controlled temperature control technique, temperature auto-correction technique, ensures fast heating, good temperature reproducibility and high analytical sensitivity
- The temperature control accuracy is less than 1%
- Graphite furnace with pneumatic control and pressure lock ensures constant pressure and reliable contact
- Automatic standard sample preparation, automatic correction of sampling probe depth, automatic tracing and correction of liquid surface height in the sample vessel, with sampling accuracy of 1% and reproducibility of 0.3%
- Equipped with alarm and automatic protection to fuel gas leakage, abnormal flow, insufficient air pressure and abnormal flame extinction in flame system
- Protection function and alarms for insufficient carrier gas and protective gas pressure, insufficient cooling rate supply and over-heating in graphite furnace system
- Adopting large-scale programmable logic array and Inter I2C bus technology
- For long term reliability of the whole electronic system, provided with European type sockets and AMP adapters
- AAS analysis is made under windows operating system which is easy-to-use with fast parameter setting and optimization
- In order to increase the sensitivity in flame analysis, two high performance HCLs can be mounted on the lamp turret
- The D2 lamp and S-H background correction capability at 1A and 1.8A respectively is better than 30 times
- Provided with detector R928 photo multiplier with high sensitivity and wide spectral range
- Data processing system: provided with analytical methods – Working curve auto-fitting standard addition method, automatic sensitivity correction, automatic calculation of concentration and content with windows operating system software
- Experiments can be repeated 1~99 times along with automatic calculation of mean value, standard deviation and relative standard deviation
- Equipped with multi task functions- sequential determination of multi-elements in the same sample, condition reading- with model function and result printing- measured data and final analytical report printout in excel
- Provided with standard RS-232 serial port connection
Specification
| O2 Enriched Flame |
Yes |
| Auto Sampler |
Yes |
| Flame |
Yes |
| High Performance Lamp |
Yes |
| Graphite Furnace Type |
Yes |
| Wavelength Range |
190-900nm |
| Wavelength Accuracy |
Better than ±0.25nm |
| Resolution |
Two Spectral lines of Mn at 279.5nm and 279.8nm can be separated with the spectral bandwidth of 0.2nm and valley peak energy ratio less than 30% |
| Baseline Stability |
0.004A/30min |
| Lamp Turret |
Motorized 6-lamp turret |
| Lamp Current Adjustment |
| Wide Pulse Current |
0~25mA |
| Narrow Pulse Current |
0~10mA |
| Lamp Power Supply Mode |
400Hz Square wave pulse 100Hz Narrow Square wave pulse + 400Hz wide square wave pulse |
|
| Optical System |
| Monochromator |
Single beam, Czerny-Turner design grating Monochromator |
| Grating |
1800l/mm |
| Focal Length |
277mm |
| Blazed Wavelength |
250nm |
| Spectral bandwidth |
0.1nm, 0.2nm, 0.4nm, 1.2nm Auto Switch Over |
|
| Flame Atomizer |
| Burner |
10cm single slot all-titanium burner |
| Spray Chamber |
Corrosion resistant all-plastic spray chamber |
| Nebulizer |
High efficiency glass nebulizer with metal sleeve, sucking up rate: 6-7ml/min |
| Emission Burner |
It is Provided |
|
| Graphite Furnace |
| Temperature Range |
RT~3000ºC |
| Heating Rate |
2000ºC/sec |
| Graphite Tube Dimensions (L*OD) |
28*8 mm |
| Characteristic Mass |
Cd≤0.8*10-12g, Cu≤5*10-12g, Mo≤1*10-11g |
| Precision |
Cd≤3%, Cu≤3%, Mo≤4% |
|
| Graphite Furnace Auto Sampler |
| Sample Tray Capacity |
55 sample vessels and 5 reagent vessels |
| Vessel Material |
Polypropylene |
| Vessel Volume |
3ml for sample vessel, 20ml for reagent vessel |
| Min. Sampling Volume |
1µl |
| Repeatable Sampling Times |
1-99 times |
| Sampling System |
Accurate dual pump system with 100µl and 1ml injectors |
|
| Air-C2H2 Flame Rich-Oxygen Air-C2H2 Flame |
| Cu: Characteristic Concentration |
≤0.025mg/L |
| Cu: Detection Limit |
≤0.006mg/L |
| Ba: Characteristic Concentration |
≤0.22mg/L |
| Al: Characteristic Concentration |
≤0.4mg/L |
|
| Main Unit Dimensions |
1070 x 490 x 580 mm |
| Main Unit Weight |
140kg |
| Graphite Furnace Dimensions |
420 x 420 x 460 mm |
| Graphite Furnace Weight |
65kg |
| Auto Sampler Dimensions |
400 x 290 x 290 mm |
| Auto Sampler Weight |
15kg |
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