Flame-Graphite Furnace AAS
Flame-Graphite Furnace Integrated Atomic Absorption Spectrophotometer
This new Flame-Graphite Furnace Integrated Atomic Absorption Spectrophotometer features a multimedia graphite furnace visualization system. It allows intuitive monitoring of the dynamic changes of the sample solution inside the graphite tube during drying, ashing and burning. It also helps users find the optimal position and depth for inserting the autosampler capillary needle into the graphite tube, and the correct placement of the platform inside the tube, ensuring analytical accuracy and extending the graphite tube’s lifespan.
The advanced optical design uses an integrated suspended vibration-isolation optical platform that improves anti-vibration capability and prevents temperature changes from affecting the optical system, ensuring stable optical signals. An 85-position autosampler with online dilution greatly simplifies analytical operations and improves efficiency.
The instrument also combines flame, graphite furnace and hydride generation functions, so analysis from high-concentration ppm levels to trace ppb levels is possible without switching atomizers. The six-lamp automatic turret enables rapid multi-element analysis, and an advanced, reliable safety protection system provides comprehensive protection for operators.
Features
- Graphite furnace visualization technology
- Safety assurance: advanced and reliable safety protection system
- Advanced optical design
- Streamlined industrial design
- Integrated flame and graphite furnace design
- High-performance autosampler: supports 85-position autosampling and online dilution
- Multi-element rapid analysis
Application
- Minerals: rare earth analysis and precious metals analysis
- Environmental: environmental protection and water quality testing
- Material science: alloy materials and building materials
- Scientific research: elemental quantitative analysis in scientific research, such as medical and health, and higher education institutions
SPECIFICATION
| Optical system | Wavelength range | 190~900 nm |
|---|---|---|
| Grating line density | 1800 lines/mm | |
| Absorbance range | -0.1~2.5 ABS | |
| Wavelength repeatability | ≤0.05 nm | |
| Wavelength accuracy | Full spectrum ±0.15 nm | |
| Optical system | Integrated optical platform, fully enclosed optical system (single beam) | |
| Detector | Photomultiplier tube | |
| Resolution | Able to separate manganese doublet lines (279.5 and 279.8 nm) with a spectral bandwidth of 0.2 nm and a valley-to-peak energy ratio of <30% | |
| Spectral slits | 0.1 nm, 0.2 nm, 0.4 nm, 0.7 nm, 1.0 nm, 2.0 nm (automatically switchable) | |
| Lamp holder | Standard 6-lamp turret, optional 8-lamp turret | |
| Background correction | Background correction technology | D2 background subtraction (background signal 1 ABS, background reduction capability ≥50 times) |
| Background subtraction method | Self-absorption background subtraction, deuterium lamp background subtraction | |
| Performance | Static baseline drift | ≤0.002 ABS/30 min (Cu) |
| Ignition dynamic baseline drift | ≤0.003 ABS/30 min (Cu) | |
| Characteristic concentration | Cu ≤10×10-12 g, Cd ≤0.4×10-12 g | |
| Measurement repeatability | Cu ≤2%, Cd ≤2% | |
| Detection limit | Cd ≤0.3 pg | |
| Flame atomizer | Gas flow control | Needle valve control |
| Burner | Air-acetylene flame burner 100 mm | |
| Nebulizer chamber | Polypropylene coated | |
| Ignition method | Automatic ignition | |
| Graphite furnace | Maximum heating rate | ≥3000 ℃/s |
| Operating temperature | Room temperature~3000 ℃ | |
| Temperature control accuracy | ≤1% | |
| Power | 6000 W peak instantaneous power | |
| General | Safety protection | Automatic gas cut-off for low pressure, power interruption, abnormal flameout and burner mismatch; automatic temperature shutdown for overheating |
| Dimensions | 700×550×440 mm | |
| Weight | 80 kg | |
| Autosampler | Not included in the standard version; 85-position autosampler in the autosampler version |