631
S
SPECTROPHOTOMETERS
SPECIFICATIONS
Main Specification
Wavelength range
190-900nm
Wavelength accuracy
±0.25nm
Resolution
Two spectral lines of Mn at 279.5nm and 279.8nm can be
separated with the spectral bandwidth of 0.2nm and
valley-peak energy ratio less than 30%.
Baseline stability
≤
0.004A/30min
Background correction
The D2 lamp background correction capability at 1A is
better than 30 times.
The S-H background correction capability at 1.8A is better
than 30 times. ( only for AAS-110A/120A)
Light Source System
Lamp turret
6-lamp turret (AAS-110A/120A),
4-lamp turret (AAS-130A)
Auto-alignment, fully automated scan and peak-picking.
Lamp current adjustment
Automatic adjustment and display.
Wide pulse current: 0~25mA, Narrow pulse current: 0~10mA
Lamp power supply mode
400Hz square wave pulse; 100Hz narrow square wave pulse +
400Hz wide square wave pulse ( AAS-110A/120A )
Optical System
Monochromator
Single beam, Czerny-Turner design grating monochromator
Grating
1800 l/mm
Focal length
277mm
Blazed wavelength
250nm
Spectral bandwidth
0.1 nm, 0.2nm, 0.4nm, 1.2nm, automatic change.
Flame Atomizer
Burner
10cm single slot all-titanium burner
Spray chamber
Corrosion resistant all-plastic spray chamber.
Nebulizer
High efficiency glass nebulizer with metal sleeve.
sucking up rate: 6-7mL/min
Emission burner
Provided with AAS-110A/120A
Graphite Furnace
Temperature range
Room temperature-3000°C
Heating rate
2000°C/s
Graphite tube dimensions
28mm (L) x 8mm (OD)
Characteristic mass
Cd
≤
0.8*10
-12
g, Cu
≤
5*10
-12
g, Mo
≤
1*10
-11
g
Precision
Cd
≤
3%, Cu
≤
3%, Mo
≤
4%
Detection and Data
Processing System
Detector
R928 photomultiplier with high sensitivity and wide
spectral range.
Software
Windows operating system
Analytical method
Working curve auto-fitting; standard addition method;
automatic sensitivity correction;
automatic calculation of concentration and content.
Repeat times
Maximum 20 times of repeat measurement, automatic
calculation of mean value, standard deviation and relative
standard deviation.
Multi-task function
Sequential measurement of multi-elements in one sample.
Condition reading
With model function
Result printing
Measurement data and final analytical report printout, editing
with Excel.
Standard RS-232 serial port communication
Characteristic
Concentration and
Detection Limit
Normal Air-C 2 H 2 flame
Cu: Characteristic concentration
≤
0.025 mg/L,
Detection limit
≤
0.006mg/L;
Rich oxygen Air-C 2 H 2 flame Ba: Characteristic concentration
≤
0.22mg/L
AI: Characteristic concentration
≤
0.4mg/L (for AAS-110A )
Function Expansion
Hydridee vapor generator can be connected for Hydridee analysis.
Dimensions and Weight
1020 (L) x 490 (W) x 540 (H) mm (main unit), unpacked 80kg
420 (L) x 420 (W) x 460 (H) mm (graphite furnace), unpacked 50kg
Atomic Absorption
