UV-Vis spectrophotometer AAS-7003

UV-Vis-NIRsingle-beamtungsten

Short description
The AAS-7000 series atomic absorption spectrophotometer (AAS-7000/AAS-7001/AAS-7002/AAS-7003) is designed for trace element analysis across gold, petrochemical, geology, medical, environmental, research, agriculture, food and materials inspection. The system supports flame, graphite furnace and hydride techniques and can analyze over 70 elements.

Application
Suitable for quantitative trace and ultra-trace analysis in laboratories and QA/QC environments: metals analysis in ores and bullion, petrochemical feedstocks, environmental monitoring, clinical samples, food safety, agricultural soils and material testing.

Features

• Advanced optical system
  • Suspended optical design for vibration and temperature stability (Patent: ZL200620023296.X).
  • 1800/mm diffraction grating for high energy and resolution.
  • Short single-beam optical path to improve detection limits for As and Se.
  • Tungsten lamp with self-absorption background correction for accurate calibration.
• Integrated compact design
  • Integrated installation of flame atomizer, graphite furnace and power supply in the host to reduce footprint (Patent: ZL200620023298.9).
  • Optimized power management extends lamp lifetime.
• Automatic quick switching
  • Switchable workbench enables fast automatic or manual switching between flame and graphite furnace (Patent: ZL200620023298.9).
• Safety and protection
  • Hollow cathode lamp current protection alarms.
  • Gas/undervoltage protection, gas-leak alarm, graphite furnace overheat and flame abnormal protection.
• Scalability and accessories
  • Supports HG-01 hydride generator for ultra-sensitive analysis of Pb, Se, Hg, Bi, Sb, Sn.
  • Optional graphite furnace autosampler and automatic standard preparation for full automation.
  • Optional flame autosampler and N2O/C2H2 system for high-temperature elements (>30 elements).
• High automation
  • Automatic wavelength positioning, slit switching, lamp current and gain control to international standards.
  • Six-lamp motorized turret for rapid lamp selection and positioning.
  • Automatic ignition, gas flow control and leak alarm.

AAS-7000 Series Summary
Model | Configuration | Type
AAS-7003 | Hose, flame, graphite furnace | Automatic

Set delivered with the instrument

• Host unit: selectable model
• Computer, printer, dedicated software and control interface
• Air supply: compressor; high-purity argon and acetylene (user-supplied)
• Element lamps: selected per application
• Hydride generator (optional)
• Graphite furnace autosampler (optional)
• Graphite furnace cooling water tank (optional)
• Spare parts and special tools

Superior graphite furnace system

• Advanced vertical temperature control; graphite furnace temperature up to 3000 ℃ for high-temperature elements.
• High stability: optical design delivers high power and signal-to-noise; lower negative pressure versus comparable units.
• Increased maximum sample volume: specially designed furnace accepts up to 70 μL for multiple injections and low-concentration samples.
• Robust background correction: continuous D2 and self-absorption correction, capability up to 1.5A and >50× correction.
• Fast optical heating for rapid atomization and improved sensitivity.
• Uniform, high-precision heating ensures isothermal conditions.
• All-titanium spray combustion system for corrosion and high-temperature resistance.
• User-centered sample inlet to reduce sampling error and ease manual injection.
• Replaceable graphite cone to maintain electrode conductivity and analysis efficiency (Patent No.: ZL2007 2 0104071).

Highly automated data processing workstation

• Windows-based interface with multi-language support and robust data handling, flexible curve fitting and fault-tolerant sample processing.
• Flexible report printing and export in multiple file formats.
• Data management: history, query, edit and download functions.
• QA/QC: automatic validity checks, re-measurement, SD/RSD tests, correlation and QC tests, baseline drift and detection limit management, automatic online dilution.
• Instrument control: automatic lamp selection, wavelength scanning, slit switching, lamp current and gain setting.
• Condition monitoring: real-time status of components, flame and furnace safety monitoring.
• Lamp life tracking with automatic on-time recording.

Technical specifications

• Wavelength range: 190 - 900 nm
• Monochromator: C-T grating monochromator
• Wavelength repeatability: ≤ 0.1 nm (AAS-7002, AAS-7003); ≤ 0.2 nm (AAS-7000, AAS-7001)
• Blaze wavelength: 250 nm
• Resolution: < 0.3 nm
• Spectral bandwidth: 0.1, 0.2, 0.4, 1.0, 2.0 nm (AAS-7002, AAS-7003)
• Wavelength accuracy: ± 0.2 nm
• Grating grooves: 1800 / mm
• Baseline stability: ≤ ± 0.004 A / 30 min (dynamic); ≤ ± 0.002 A / 30 min (static)
• Flame Cu characteristic concentration: ≤ 0.02 μg/ml
• Flame precision (RSD): ≤ 1%
• Flame detection limit: ≤ 0.005 μg/ml
• Flame burner head: 50 × 100 mm interchangeable all-titanium burner and spray chamber
• Graphite furnace Cd characteristic mass: 0.5 × 10^-12 g
• Graphite furnace temperature range: room temperature to 3000 ℃
• Graphite furnace program: up to 20 segments; ladder, ramp; three heating methods supported
• Graphite furnace heating modes: max power heating and light-controlled rapid heating
• Graphite furnace detection limit: 0.5 × 10^-12 g
• Graphite furnace precision (RSD): ≤ 2%
• Graphite furnace ramp rate: ≥ 2000 ℃/sec
• Background correction: D2 and self-absorption (optional); correction up to 1.5A and >50×
• Measuring methods: flame absorption, flame emission, graphite furnace, hydride method
• Analysis modes: linear, nonlinear, standard addition; automatic storage and printout of calibration curve, spectrum, parameters and results
• Graphite furnace power: built into host
• Size: 880 mm (L) × 540 mm (W) × 450 mm (H)
• Weight: 125 kg
• Power supply: 220 V, 50 Hz, single-phase
• Host power: 200 W; graphite furnace power: 4 kW
• Main features: suspended optical base for anti-seismic/anti-drift stability; gas automatic protection with interlocks and alarms; 6-lamp automatic turret; spectral bandwidth options; flame emission for alkali metals; efficient atomizer with high atomization efficiency; integrated flame atomizer, graphite furnace and power supply; fast table switch between flame and graphite furnace (~2 s) without optical path adjustment.