Method for quantifying the amount of ammonium bicarbonate in a solid sample of ammonium bicarbonate
AssigneeA.Y. Laboratories Ltd.
InventorsAyala Barak, Mari Nuopponen
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Abstract
A method for quantifying the amount of ammonium bicarbonate in a solid sample of ammonium carbamate is provided. The method includes measuring the FT-IR spectrum of the sample, calculating the IR band maximum for a first band that is common to ammonium carbamate and ammonium bicarbonate and for a second band that is unique to ammonium carbamate, calculating a ratio of the maximum of the second band to the maximum of the first band, and calculating the concentration of ammonium bicarbonate in the sample from a calibration curve.
Claims20
A solid sample of ammonium carbamate comprising a known amount of ammonium bicarbonate, the known amount determined by:
- a) measuring an FT-IR spectrum of said sample;
- b) calculating an IR band maximum for a first band that is common to ammonium carbamate and ammonium bicarbonate and for a second band that is unique to ammonium carbamate;
- c) calculating a ratio of said maximum of said second band to said maximum of said first band;
- and
- d) calculating a concentration of ammonium bicarbonate in said sample from a calibration curve relating said concentration to said ratio.
A method for quantifying an amount of ammonium bicarbonate in a solid sample of ammonium carbamate comprising:
- a) measuring an FT-IR spectrum of said sample;
- b) calculating an IR band maximum for a first band that is common to ammonium carbamate and ammonium bicarbonate and for a second band that is unique to ammonium carbamate;
- c) calculating a ratio of said maximum of said second band to said maximum of said first band;
- and
- d) calculating a concentration of ammonium bicarbonate in said sample from a calibration curve relating said concentration to said ratio.
Dependencies are inferred from the claim text.