The atomic absorption spectrophotometer AA370MC a reflective dual-beam optical path system. Dual-beam is used in flame, and single-beam is the default in graphite furnace for data processing speed. At the same time, it allows users to choose to use dual-beam mode and multiple pressure monitoring (flame state, water seal, Gas pressure, atomization system pressure, waste liquid bottle level, etc., automatically interlock and turn off fire in case of abnormality or power failure).

Flame graphite furnace integrated machine technical indicators

optical system

Wavelength range: 185-910nm

Wavelength Repeatability:<0.05nm

Wavelength accuracy:<±0.2nm

Spectral broadband: 0.1, 0.2, 0.4, 1.0, 2.0nm five optional, automatic switching

6 lamp positions automatically switch lamp holder, automatic collimation, 6 lamp holders can be lit and preheated at the same time, 1 lamp can work and 5 lamps can be preheated

Baseline drift: Static:<0.002A/30min; dynamic:<0.0025 A/30min

Monochromator: Achromatic C- T monochromator, automatic peak finding and scanning

Grating: 1800 strips/mm, area plane grating

Detector: High sensitivity, wide spectral range photomultiplier tube

Resolution: Manganese double lines (279.5nm and 279.8nm) separated by 0.2nm spectral bandwidth and valley-to-peak energy ratio<20%

flame atomization system

Characteristic concentration: Cu 0.02 μg/mL 1%,Ba<0.15 μg/mL 1% (nitrous oxide-acetylene method)

Limit of detection (Cu):<0.002 μg/mL

Precision: RSD<0.25%

Burner: 100/50mm metal titanium burner, air-cooled pre-mixed type

graphite furnace atomization system

Temperature range: room temperature -3000 ℃, light control and power heating modes, with temperature self-correction function, temperature control accuracy: accuracy ≤ 1%, heating rate: 3000 ℃/S

Heating mode: longitudinal heating

Characteristic quantity (Cd):<0.15*10^-12g

Limit of detection (Cd):<0.25*10^-12g

Precision (Cd):≤ 2%