A SPECTROPHOTOMETRIC STUDY OF HYDROTHERMAL PROCESSES

摘要

High-temperature spectrophotometry is an efficient method of studying hydrothermal systems. In that approach usually isothermal cells are employed, making it possible to determine the condition of the solution and the forms in which the components dissolved in them will be found at various temperatures and pressures [1-6]. In order to study hydrothermal processes in a dynamic system, a thermogradient autoclave device was designed which makes it possible to perform spectrophotometric measurements in the course of chemical reprecipitation of substances at temperatures to 500 deg C and pressures to 10~8 Pa [7]. Simpler thermogradient cells were developed to study hydrothermal transport processes (dissolution, the transfer and deposition of substances) at temperatures to 350 deg C. They include elongated tubes (ampoules) made from optical quartz glass, electric heaters, thickeners and holders of ampoules (Fig. 1, 2).