Classification: Graphite Furnace Series
Product Overview
The GGX-820 Atomic Absorption Spectrophotometer is a dedicated graphite furnace atomic absorption system designed for high-sensitivity trace and ultra-trace elemental analysis. Developed from decades of expertise in atomic absorption spectroscopy, the GGX-820 delivers exceptional analytical performance, reliable operation, and advanced automation for laboratories requiring precise determination of metallic elements at very low concentrations.
Featuring a high-performance graphite furnace, intelligent autosampler, advanced optical system, and comprehensive safety monitoring, the GGX-820 is an ideal solution for environmental, food, pharmaceutical, geological, metallurgical, and research applications.
Key Features
High-Sensitivity Graphite Furnace Analysis
- Dedicated graphite furnace atomic absorption spectrometer for ultra-trace elemental determination.
- High-performance deuterium lamp background correction improves analytical accuracy and compensates for matrix interference.
Automatic Eight-Lamp Turret
- Automatic rotating lamp holder supports up to eight element lamps.
- Simultaneous preheating of all installed lamps increases laboratory productivity and reduces setup time.
Advanced Graphite Furnace Control
- Integrated graphite furnace power supply ensures a compact and reliable system design.
- Current and voltage vector control technology delivers highly reproducible temperature ramping and consistent analytical results.
- Rapid heating rates of ≥ 2000°C/s improve analytical efficiency and sample throughput.
Intelligent Safety Monitoring
-
Continuous monitoring of:
- Graphite furnace temperature
- Internal and external gas pressure
- Graphite tube condition
- Transformer temperature
- Automatic fault detection enhances operational safety and instrument protection.
Precision Graphite Furnace Autosampler
- Patented autosampler design provides accurate positioning and highly reproducible sample introduction.
- Automated calibration curve generation and flexible matrix modifier addition improve analytical efficiency.
Optical System
High-Performance Monochromator
- Advanced T-type monochromator design optimised for elemental analysis in the ultraviolet region.
- Short optical path maximises energy throughput and analytical sensitivity.
Optical Specifications
- Wavelength Range: 190–900 nm
- Focal Length: 270 mm
- Grating Density: 1800 lines/mm
- Blaze Wavelength: 250 nm
- Spectral Bandwidths: 0.2, 0.4, 1.0 and 2.0 nm (automatic switching)
- Spectral Bandwidth Accuracy: ≤ ±0.02 nm
Graphite Furnace Atomisation System
Advanced Temperature Control
- Temperature range from ambient to 3000°C.
- Temperature control accuracy ≤ 0.5%.
- Rapid heating rates of ≥ 2000°C/s ensure efficient atomisation and improved productivity.
Flexible Heating Programs
- Up to 10 programmable heating stages.
-
Three selectable heating modes:
- Step
- Ramp
- Hold
- Longitudinal heating design provides uniform temperature distribution throughout the graphite tube.
High Reproducibility
- Advanced furnace control system delivers stable temperature profiles for highly reproducible analytical results.
Safety Features
The GGX-820 incorporates multiple protection systems to ensure safe and reliable operation:
- Internal and external gas pressure monitoring
- Power transformer over-temperature protection
- Graphite furnace over-temperature protection
- Graphite tube fracture detection and alarm
- Automatic fault diagnosis and protection functions
These features help maximise instrument uptime while protecting both the operator and the instrument.
Graphite Furnace Autosampler
High-Capacity Sample Handling
- 52 sample positions, including three dedicated 5 mL positions.
- Supports unattended operation and high sample throughput.
Precision Sample Injection
- Injection volume range: 2–100 μL
- Injection accuracy (20 μL): ≤ 0.5%
- Precise sample positioning ensures excellent analytical repeatability.
Automated Workflow
- Automatic calibration curve generation
- Flexible matrix modifier addition
- Reduced manual intervention and improved laboratory efficiency
Applications
The GGX-820 is widely used for:
- Food safety and hygiene testing
- Environmental monitoring
- Water quality analysis
- Geological and mining laboratories
- Metallurgical testing
- Agricultural analysis
- Chemical industry quality control
- Pharmaceutical testing
- Commodity inspection
- Universities and research institutions
Detectable Elements
The GGX-820 is capable of analysing more than 70 metallic elements, including:
Gold (Au), Silver (Ag), Copper (Cu), Lead (Pb), Zinc (Zn), Manganese (Mn), Potassium (K), Sodium (Na), Calcium (Ca), Magnesium (Mg), Iron (Fe), Cadmium (Cd), and many others.
Typical sample types include food products, surface water, groundwater, drinking water, environmental samples, industrial materials, agricultural products, and geological specimens.
The dedicated graphite furnace design makes the GGX-820 particularly suitable for ultra-trace elemental analysis where maximum sensitivity and low detection limits are required.