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Direct Measurement of Carbonate Content in Soil Samples by Means of CO Laser Infrared Photoacoustic Spectroscopy

Volume 52, Number 12 (Dec. 1998) Page 1526-1529

Doka, Otto; Bicanic, Dane; Szucs, Mihaly; Lubbers, Marcel

CO laser infrared (IR) photoacoustic spectroscopy (PAS) at 1801 cm-1 was used to determine the content of carbonate in various soils. The PA signal is linearly proportional to the content of carbonate within the 0-30% (w/w) range; the 2% (w/w) limit of detection (LOD) is adequate for the application in practice.