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SP-3800 series atomic absorption spectrophotometer (AAS)
Technical Parameters:
Optical system: aberration CT type monochromator device
Wavelength range: 190.0-900nm automatic adjustment
Wavelength accuracy: ±0.20nm (system automatic correction)
Wavelength repeatability: 0.10nm
Spectral bandwidth: 0.1, 0.2, 0.7, 1.4nm automatic switching
Resolution: Resolvable manganese three lines (279.5 nm and 279.8nm line peak valley ≤ 25%)
Baseline drift: static (Cu) ±0.003Abs/30min
Dynamic (Cu) ±0.005Abs/30min
Lamp holder specifications: 8 lamp holders are automatically positioned, three-dimensional automatic adjustment
Flame analysis
Characteristic concentration (Cu): 0.025ug/ml/1%
Detection limit (Cu): 0.004ug/ml
Precision: RSD≤0.5%
Burner: Metal titanium burner (100mm)
Sprayer: High-efficiency glass atomizer
Atomization chamber: Atomization chamber of corrosion-resistant material
Position adjustment: automatic adjustment of flame burner height
Safety measures: With a variety of automatic protection functions
Graphite furnace analysis
Flame/graphite furnace switching Independent graphite furnace system without switching
Characteristic quantity (Cd): ≤0.4pg
Detection limit (Cd): ≤0.8pg
Precision: RSD≤2%
Atomization heating method: light control, time control, general heating
Heating range: room temperature -3000°C
Heating rate: up to 2000°C/s
Safety measures: automatic protection and alarm for cooling water, protective gas, furnace temperature, graphite tube installation
main feature:
Background correction
Deuterium lamp background correction automatic optical balance, correction capacity? 50 times (1Abs)
Self-priming background correction intelligent balance, correction ability? 85 times (1Abs)
Graphite furnace autosampler
Sample positions: 87
Standard cup volume: 2 ml sample, 6 ml improver
Number of matrix improvers: 3 types
Injection system: 500 mL syringe
Injection volume: 1-100 mL
Injection accuracy: ±0.2 mL
Functions: Automatically add matrix modifier; automatically configure and establish calibration curve; fully intelligent automatic dilution; repeated sample injection enrichment and thermal injection; automatic residue removal and elimination of cross-contamination, and continuous air intake in different volumes controlled by a microcomputer Isolation prevents the contamination of the original liquid; intelligently adjusts the depth and speed of sampling and injection.
data processing
Concentration calculation method: standard curve method (6 linear or non-linear curves)
Standard addition
Interpolation
Repeated measurement times: 1-30 times
Mathematical statistics calculate the average value, give the standard deviation and relative standard deviation,
Two statistical results of absorbance and concentration are given at the same time
Instrument settings: One key to complete all instrument parameters and calculation parameter settings
Three working modes: user-defined method call, continued last measurement, method recommended by the manufacturer
Element switching: fast switching without optical error
Optional accessories hydride generator, circulating water cooler
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