Atomic absorption spectrophotometer

Details Atomic absorption spectrophotometer Atomic absorption spectrophotometer

1997-06-19

1999-01-19

Hantis, K. P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356334, G01J 318

Patent

active

058619496

ABSTRACT:
Turning on a hollow cathode lamp of an objective element, the intensity of the light is measured while scanning the wavelength within a predetermined range centering around the resonance line of the objective element by rotating a diffraction grating by a pulse motor. Then a spectrum is constructed on the screen of a display unit within the above range, and the user operates an operation unit to point out the peak of the resonance line in the spectrum. The number of the driving pulses sent to the pulse motor when the pointed peak is detected is saved in an EEPROM so that the number corresponds to the wavelength of the resonance line. After that, when the objective element in a sample is measured, the above number is read out from the EEPROM and the pulse signals are sent to the pulse motor by the number, whereby the diffraction grating is set at an angular position corresponding to the resonance line of the element correctly.

REFERENCES:
patent: 5268737 (1993-12-01), Fukuma et al.

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