Appeal No. 95-0339
Application 07/881,941
waveguide in contact with the reaction volume, some of the power
of the radiation is coupled into the reaction volume and absorbed
by the analyte or analytes in the reaction volume (col. 4, lines
31-37). The absorption is based on the absorption character-
istics of the analyte or analytes at each wavelength of
electromagnetic radiation (col. 4, lines 37-39). According
to the principle of attenuated total internal reflectance, the
interactions of the propagated light are integrated along the
length of the waveguide to produce an absorption spectra of the
analyte or analytes in the reaction volume that is similar to a
standard transmission spectrum (col. 4, lines 39-44). The
intensity loss of a particular wavelength or mode of light is
directly correlated to the concentration of analyte or analytes
in the reaction volume (col. 9, lines 21-24).
Pujado discloses a process for removing trace quantities
of hydrocarbonaceous compounds from an aqueous stream by
contacting the stream with a supercritical solvent which
dissolves hydrocarbonaceous compounds from the stream, separating
the hydrocarbonaceous compounds from the solvent at subcritical
conditions, and recovering the hydrocarbonaceous compounds (col.
2, lines 17-30).
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