A new method of differential thermal analysis and instrument were developed. The solution and pure solvent were placed in a cooling bath whose temperature was decreased by a semiconductor chip. Three detectors were us...A new method of differential thermal analysis and instrument were developed. The solution and pure solvent were placed in a cooling bath whose temperature was decreased by a semiconductor chip. Three detectors were used to sense the temperature (Ts, Tr and Tw) of solution (S), pure solvent (R) and cooling bath (W). When (Tr-Ts)-(Ts-Tw)presented maximum, (Tr-Ts) was the freezing point depression of the solution which was proportional to the concentration of solution. An instrument for the method was designed.展开更多
文摘A new method of differential thermal analysis and instrument were developed. The solution and pure solvent were placed in a cooling bath whose temperature was decreased by a semiconductor chip. Three detectors were used to sense the temperature (Ts, Tr and Tw) of solution (S), pure solvent (R) and cooling bath (W). When (Tr-Ts)-(Ts-Tw)presented maximum, (Tr-Ts) was the freezing point depression of the solution which was proportional to the concentration of solution. An instrument for the method was designed.
