Spectrometer
Optics
High light throughput single/double switchable optics,including low UV range. Narrow
beam optical design for flame and furnace configuration. Aberration corrected 30cm
Czerny-Turner monochromator with software controlled wavelength selection and
optimization.
Dimensions
W 65 x D 55 x H 37cm
Band Pass
Software adjustable 0.2, 0.6 and 1.2 nm (0.6 nm reduced slit height).
Grating
53mm x 53mm diffraction grating with 1200 lines/mm
Wavelength Range
185-900 nm controlled by software
Wavelength Scan /Optimization
From 185-900 nm in any selected range with Zoom Function.
Automatic wavelength optimization with graphical display.
Background Correction
Rapid self-reversal method. Deuterium lamp with 1 ms rapid response for accurate correction. Electronic modulation with deuterium current control and aperture attenuation.
PMT
High quantum efficiency from 185-900 nm, automatic gain control.
Drift Correction ADC (Automatic Drift Correction) permits the full intensity of the light beam to pass through the sample resulting in superior detection power. No HCL preheat is required.
Data Sampling Rate
D2 and hollow cathode lamps operate at 1000 Hz data sampling rate
Light Source
5 lamp motorized turret with independent power supply.
Automatic alignment and coded lamp selection.
Built-in High Intensity Hollow Cathode Lamps
2 channel independent high intensity power supply.
Provides improved sensitivities and lower detection limits.
Atomizers
The configuration of the atomization compartment allows rapid changeover between atomization sources.
Flame:
Gas control
Software controlled with automatic changeover between different flame systems.
Spray Chamber
Solid Teflon spray chamber, inert to acids and organic solvents.
Burner
Corrosion resistant Titanium burners for both air/acetylene and nitrous-oxide/acetylene.
Gas Requirements
1. Air – dry, oil and dust free @ 50-80 psi Typical flow rate 2.0 – 10.0 L/min
2. Acetylene (99% pure) @ 8-10 psi Typical flow rate 0.5 – 8.0 L/min
3. Nitrous-oxide (99.5 % pure) @ 50-80 psi Typical flow rate 2.0 –10.0 L/min
Flow-rate / Control
Software controlled.
Sample Introduction
Automatic on-line dilution and preparation of calibration curves from a single standard.
Fume Exhaustion
Conventional laboratory extraction system.
Safety System
Safety Interlock mechanism that monitors the burner type, burner fitted, gas pressures.
Flame on/off sensors; Power failure automatic shutdown. Liquid trap system, pressure
relief plug and flame shield to protect from UV radiation.
Transversely-heated Graphite Furnace:
Purge Gas
Computer controlled flow rate of Ar or He from 0 to 5.0 L/min.
Furnace Tube
Pyrolytically coated integrated contact cuvette, 5.7mm internal dia. × 19mm,
transversely heated, temperature gradient of less than 20°C.
Temperature Range
Programmable from ambient up to 3000°C. Full range temperature sensors for direct
real-time temperature display and control over the full temperature range.
Furnace heating rate
Up to 3800 K / s
Program flexibility
Heating programs of up to 30 steps. Each step can be programmed separately.
Ramp Time
The heating time of the graphite tube to the preprogrammed temperature can be varied in steps of 0.1 s.
Hold Time
Selectable from 0 s up to 25 s in steps of 0.1 s
Safety
Gas and cooling water safety interlocks.
Vapor and Hydride Generator:
Absorption Cell
Constant temperature electrothermally heated quartz absorption cell with temperature range of ambient to 1000 °C.
Pump
Continuous flow peristaltic pump with speed control.
Accessories
High efficiency mixing section, gas-liquid separator, tubing and connectors included.
Performance
Cold vapor and hydride generation determinations of Hg, As, Se, Te, Bi, Sb, Sn and
other hydride-forming metals at sub-trace levels.
Autosampler
Optional Flame / VG XYZ Autosampler:
Bench top high capacity XYZ autosampler for flame and vapor generation atomization:
Autosampler design
Customer has the choice between Cetac AX-500 or Gilson G-220.
Sample Introduction
When combined with on-line dilution the flame autosampler offers, calibration from a single standard and automatic dilution of over-range samples.
One for all XYZ Autosampler:
Instrument mounted intelligent high capacity XYZ autosampler for flame, graphite furnace, vapor generation:
Dispensable reagent volume
Up to 1000µL, selectable in increments of 1µL.
Sampling capacity
Holds standard 192 sample cup/test tube (0.5 or 10 mL) sample racks. Also compatible with standard solvent extraction test tubes, ICP test tubes, micro plates and custom made trays.
Super Fast-Dry function
Software controlled preheating and sample injection speed. Allows for 3 sample/min
turn-around time with GF.
Sample Introduction
Random access with adjustable sample/reagent volume, automatic standard and
sample preparation, standard addition and spike.
