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유성구,류시옥,박영해,류종하,서길수 ( Sung Gyu Lyu,Si ok Ryu,Young Hae Park,Jong Ha Rhew,Gil Soo Su ) 한국화학공학회 1998 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.36 No.4
Samples of calcium carbonate were analyzed by X-ray diffraction to determine the polymorphic compositions of calcite, vaterite and aragonite. Standard curves were taken from the peak heights of binary polymorphs mixtures. The content of vaterite in the mixture of calcite and vaterite was obtained from the ratio of the peak heights at 29.32 and 24.81° , 27.09° and 32.75° In this work the experimental error is estimated at about 3 %. For the binary mixture of calcite and aragonite the content of aragonite was determined from the ratio of the peak height of calcite, 29.32° to the peak heights of aragonite, 26.06° , 38.40° and 45.81° The experimental error is estimated at about 3%. Compositions of three polymorphs were estimated from the standard curves. The results from the experiments for the pure synthetic components gave excellent agreement with the calculations.