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Spectrometer System Description
Technical data
Principle
Monochromator Littrow configuration grating monochromator.
Detector
Lamps
Background
correction
Atomizers
7-14
Atomic absorption spectrometer.
Computer controlled, using a special application program running under a
graphical user interface.
Real-time double-beam, all-reflecting optical system.
Front-surfaced optics protected by a silica coating.
AC modulated spectral line sources.
Grating:
ruled area: 64 mm x 72 mm, 1800 lines/mm
blaze wavelengths: 236 nm and 597 nm
Focal length: 267 mm
Slit widths: 0.2, 0.7 and 2.0 nm
Wavelength range: 190–870 nm
Reciprocal linear dispersion: 1.6 nm/mm (nominal)
Segmented discrete solid-state detector with CMOS charge amplifier array;
software-controlled automatic gain control (AGC).
Line radiation sources. Positions for up to 8 lamps in lamp compartment.
Single- and multi-element hollow cathode lamps (HCLs) and up to 4
electrodeless discharge lamps (EDLs) can be used.
Continuum source (deuterium lamp).
Flame atomization: Premix burner system with pneumatic nebulizer and
interchangeable burner heads; automatic changeover between air/acetylene
and nitrous oxide/acetylene flames.
Electrothermal atomization: Longitudinally-heated graphite furnace.
0993-5255
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