%0 Research Notes
%T A comparison between the decomposition degree of peat and thermoanalytical information
%A Ranta, Jussi
%D 1979
%J Suo - Mires and peat
%V 30
%N 2
%U http://suo.fi/article/9493
%X In the study, comparisons were made between the decomposition degree of peat deternimed in accordance with GOST-10650-72 standard, and DTG peaks for peat. When a peat sample of 15 mg and a heating rate of 10°C/min were used, peaks were observed in temperature areas of 310 to 325°C and 415 to 435°C. The former area presents the oxidation of sugars and cellulosic material. The height of the peak correlates with the degree of decomposition, the correlation coefficient being —0,92 (n=10). When the decomposition values were compared with the height of the peak in the area of 415 to 435°C, a value of 0,73 was obtained for the correlation coefficient. When the ratio of the peak heights was compared with the decomposition degree, a value of —0,94 was obtained. Hence- the decomposition degree of peat can be determined fairly reliably by aid of thermogravimetric measurements, if the contents of thermal changes are known adequately accurately.