AA-1800H Atomic Absorption Spectrometer

1 Instrument Use

1.1 Flame/graphite furnace atomic absorption spectrometer can analyze and determine major and trace inorganic elements.

2 Working Conditions

2.1 Power Supply:220V (+5%～-10%),50/60 Hz；5000VA.

2.2 Environment Temperature:+15℃～+35℃.

2.3 Relative Humidity:20～80%.

3 Technical Indicators

3.1 Optical Splitting System

3.2 Grating line density:≥1800line/mm.

3.3 Effective line area of grating: ≥50 x 50 mm².

3.4 Wavelength Range:190-900nm.

3.5 Spectral Bandwidth:0.1,0.2,0.4,1.0,2.0nm The fifth gear is automatically adjustable, and the wavelength slit width and energy are automatically set.

3.6 Wavelength Accuracy:≤0.15nm,Wavelength Repeatability: ±0.1nm.

3.7 Baseline Drift:Static≤±0.002A/30min,Dynamic≤±0.005A/30min.

3.8 Spectral resolution of the instrument: it can distinguish 279.5nm and 279.8nm manganese double wire, and when the spectral passband is 0.2nm/mm, the peak-valley energy between the two wires is less than 30%

3.8.1 Light source: six lights automatic switching turret, automatic collimation

3.8.2 Lamp current setting: 0-30mA, automatically set by computer.

3.8.3 *High performance power supply: built-in high performance lamp double cathode power supply, aiming at some spectrum line interference and unstable elements, can provide the stability and sensitivity of the machine test; (Color pages and software screenshots should be provided as evidence)

3.9 Flame Atomizer

3.9.1 *Characteristic Concentration(Cu):0.015μg/mL/1%.

3.9.2 *Detection Limit(Cu):0.002μg/mL.

3.9.3 *Accuracy:RSD≤0.5%.

3.9.4 Combustion Head: Titanium combustion head, 50mm or 100mm universal combustion head.

3.9.5 Atomizer: Pt-Ir capillaries, Teflon nozzles, ceramic impact balls (for hydrofluoric acid).

3.9.6 Atomizing Room: atomizing room for explosion-proof corrosion-resistant materials.

3.9.7 Ignition Mode: microcomputer control, automatic ignition.

3.9.8 Gas Control: automatic gas control system,

3.9.9 Adjustment System: automatic PC control flame/graphite furnace automatic switch, and automatic optimization.

3.9.10 Safety protection: with automatic safety protection function, anti-tempering automatic air circuit protection, acetylene leakage alarm, automatic shutdown system, abnormal automatic power off.

3.10 Graphite Furnace Atomizer

3.10.1 Statistic Feature(Cd):0.5×10-12g.

3.10.2 Detection Limit(Cd):0.4×10-12g.

3.10.3 *Accuracy:RSD≤3%.

3.10.4 *Heating method: longitudinal heating.

3.10.5 Safety Protection: water flow, water temperature, air pressure, poor contact of graphite tube, over current and power alarm protection.

3.10.6 Conversion mode: Automatic flame/graphite furnace switching all-in-one machine, controlled by electronic mobile platform software, without manual disassembly.

3.10.7 *Integrated water-gas refrigerating furnace body for graphite furnace atomic absorption, optimized and improved the design of graphite furnace motor base, integrated and centralized reasonable arrangement of water cooling system and protective gas pipeline, to achieve the ideal pipeline connection, as well as the spatial position relationship of component installation; (Provide supporting materials issued by authorities at or above the provincial level, and the purchaser has the right to check the originals when supplying)

3.10.8 *Heating Temperature Control Mode: Room temperature -3000℃, automatic temperature control up to 20 stages, enrichment in the furnace up to 20 times, four heating modes, longitudinal light control monitoring of graphite tube inner wall temperature. (Screenshots of the software should be provided for support)