Simple method for the high-temperature isolation of 111In from silver

A method is proposed for the quantitative high-temperature isolation of 111In from silver irradiated by α-particles into a gas phase containing a mixture of HCl and H2O with a total pressure of about 3 Pa for these gases. It is shown that the indium evolved into the gas phase probably occurs in the form of at least three compounds, viz.., the trichloride, monochloride, and oxychloride, which have adsorption temperatures on quartz of around 385, 475, and 655 K, respectively. All these compounds are readily washed from the surface of quartz apparatus by a weak (0.05 M) solution of hydrochloric acid