ATOMIC ABSORPTION SPECTROPHOTOMETER

Features

• Using PC for automatic controlling & data processing;
• Integrated design of the flame atomizer and the graphite furnace atomizer, both of which can be automatically switched;
• Eight lamps automatic switch, automatically adjust supply and optimization of the beam position, pre-set optimization hollow cathode lamp working conditions for multi elemental detection convenient
• Automatic ignition, automatic flow rate setting, turn off automatic protection, automatically adjusts negative high voltage, lamp current;
• Automatic control wavelength scanning, automatic peak search completed within 30 seconds, Auto-zero, the gas flow is set automatically
• Advanced and reliable the safety protection system, full range of safety protection for the operator
• Hydride generator for option
• The excellent quality of the optical system, optical system suspension design, the vibration and the environmental temperature changes can not affect the instrument performance
• Convenient and reliable utility software assistant, comprehensive support the windows platform
• The new design of the flame atomizer and high sensitivity of the graphite furnace.

Performance Index
Optical system

• Wavelength: 190nm-900nm
• Monochromator:  C-T, aberration
• Wavelength accuracy:  ±0.15nm
• Wavelength repeatability: <0.10nm
• Baseline shift:  0.004A/30min
• Detector: high sensitivity photomultiplier
• Spectrum bandwidth: 0.1nm, 0.2nm, 0.4nm, 1.0nm, 2.0nm for option
• Dispersion element: plane diffraction grating, 1800article/nm, scoring area 40x40mm2 
• Resolution ratio: in 0,2nm spectral bandwidth, the half width of the measuring spectral line no more than0.2nm±0.02nm

Atomic system

• (Cu) characteristic concentration: 3.0μg/ml, absorbance not less than 0.300Abs
• (Cu) detection limit: <0.005μg/ml
• Precision: RSD≤0.8%
• Sprayer: high efficiency glass atomizer
• Burner: 100mm titanium metal, air premixed
• Atomizing chamber: corrosion resistant material
• Position adjustment: auto setting for the optimum height of the flame burner and front and rear position
• Safety: with many kinds of automatic protection

Graphite furnace atomic system

• (Cd) characteristic concentration: 0.5x10-12g,
• (Cd) detection limit: 3.0μg/ml, 15μL sample, absorbance not less than 0.31Abs
• Precision: RSD≤0.3%
• Heating temperature range: -3000℃ in room
• Heating rate: >2000℃
• Temperature control accuracy: ≤1%
• Heating temperature control method: the power control method of the dry ashing stage, the atomization stage with the maximum power control
• Heating condition setting: up to 11 programs, ramp heating-up, moment heating-up, maximum power heating-up
• Safety: with the alarm and automatic protection when cooling water flow in lack, superheat and over current indicting by the argon under voltage
• Background correction: in 1A deuterium background correction ≥30 times, in 1A self absorption background correction≥60 times
• Graphite furnace heating method: constant power heating
• Measurement method: air-acetylene flame method, hydride generator atomic absorption method, graphite furnace method
• Concentration calculation: standard curve method (1-3 times curve), interpolation method, standard addition method
• Repetition survey frequency: 1-20times, calculate average value, display standard deviation and relative standard deviation
• Printing result: parameters print, data result print, graph print, summary report
• Software: Windows 98/2000/XP
• Data output: instantaneous value, integral value, peak value, peak area

Automation system

• Eight lamps automatic switch, with the high performance lamps
• Auto scanning and peaking of the wavelength, auto transfer the slit
• Auto setting the gas flow, to choose the best combustion ratio
• Auto setting for the optimum height of the flame burner and front and rear position
• Automatic alarm in fray-out of the flame, alarm in ignition failure
• Water seal position confirmation protection

Instrument parameter
AAS
Source: AC 220V/50HZ
Power: 220VA
Weight: 100Kg
Volume: 1170mm (L)×480mm(W)×440mm(H)

Graphite furnace
Source: AC 380V/50HZ
Power: 12KVA
Weight: 450Kg
Volume: 410mm (L)×480mm(W)×440mm(H)
Operating temperature: 10℃~35℃
Operating humidity:  ≤80%

Standard Layout

• Main host
• Low noise oil free air compressor
• Operating software
• Accessories
• Wooden case packaging and transportation
• Did not include computer & printer