Appeal No. 2000-1958
Application No. 08/854,620
elements were preliminarily stored in a memory device and the
light emitted from the sample was compared against the stored
values in order to identify elements which show values close to
those in memory. However, many elements exist in the form of a
compound, rather than in elemental form. When an element is in
the form of a compound, a “chemical shift” is observed, i.e., the
peak for that element appears at a shifted wavelength compared to
when the element is in the elemental form.
Recognizing the “chemical shift” problem, the instant
invention stores, in a database memory, reference spectral line
data of various elements in different compound forms. If the
measured spectral line data include spectral lines of any of the
compound-forming elements, the reference spectral line data is
compared with the measured spectral line data to thereby identify
elements in the sample.
Representative independent claim 1 is reproduced as follows:
1. An apparatus for qualitative analysis for identifying
elements contained in a sample by exciting said sample and
spectroscopically analyzing signal light emitted from said
sample, said apparatus comprising:
a data memory for storing measured spectral line data
including chemical shifts obtained from a sample;
a data base memory storing reference spectral line data of
-2–
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