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Development of a Solid State Arsenic Probe for Use in Pyrometallurgical Processes
註釋Arsenic is a highly toxic element which occurs naturally in concentrations up to 15 percent in many copper, nickel, gold, silver, and iron sulphide based ores, primarily as arsenides. During pyrometallurgical processing, arsenides can be volatilized as oxides or sulphides. The development of effective processes for the removal of arsenic, both from the ores and the flue gases, requires reliable thermodynamic data for various metal arsenides and arsenates as well as a simple arsenic sensor. This project developed a potentiometric solid state electrolyte sensor which could be used to determine the content of arsenic oxides in a gas phase containing oxygen at elevated temperatures (600C-900C).