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