Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Patent
1988-05-20
1989-09-19
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
356319, G01J 342, G01N 2174
Patent
active
048675628
ABSTRACT:
An atomic absorption spectrophotometer for simultaneously measuring a plurality of elements different in kind from each other. A cylindrical heating furnace is provided for heating a sample being analyzed to dry, ash and atomize the sample thereby producing atomic vapor. A plurality of hollow-cathode discharge tubes corresponding in number to the elements being detected are arranged for simultaneously emitting light beams respectively containing line spectra of the respective elements, to cause the light beams to be incident upon the heating furnace at respective angles of inclination with respect to a central axis of the heating furnace. A plurality of spectral detection systems are arranged behind the heating furnace in relation to the angles of inclination, for respectively spectral-diffracting and receiving the light beams having their respective line spectra absorbed by the atomic vapor. A signal processing device is provided for carrying out calculation to obtain concentrations or quantities of the respective elements in the sample being analyzed, on the basis of respective ratios of atomic resonance absorption of the respective line spectra spectral-detected.
REFERENCES:
patent: 3544789 (1970-12-01), Wieder
patent: 3552657 (1971-01-01), Chisholm et al.
Mavrodineanu et al., Applied Optics, vol. 7, No. 7, Jul. 1968, pp. 1281-1285.
Lundberg et al, Analytical Chemistry, vol. 48, No. 13, Nov. 1976, pp. 1922-1925.
Harnly et al, Analytical Chemistry, vol. 51, No. 12, Oct. 1979, pp. 2007-2014.
Atomic Absorption Analysis, Kodan-sha, Scientific, 1972, pp. 121-122.
Kitagawa Masatoshi
Oishi Konosuke
Okumoto Toyoharu
Tobe Hayato
Tsukada Masamichi
Evans F. L.
Hitachi , Ltd.
LandOfFree
Atomic absorption spectrophotometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Atomic absorption spectrophotometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Atomic absorption spectrophotometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-364953