Standardization of methods for the determination of traces of mercury: Part III. Determination of total mercurry in chlorine

Abstract

A method is given for the routine determination of mercury in chlorine. For liquid chlorine, a sample is taken in a refrigerated trap containing hydrochloric acid. The chlorine is slowly evaporated at atmospheric pressure, and the hydrochloric acid remaining is washed with carbon tetrachloride to remove organic substances. The mercury remains in the aqueous phase and is finally determined by flameless atomic absorption spectrometry. Gaseous chlorine is sampled in an evacuated bulb and the mercury absorbed in an acid permanganate solution, before its determination by flameless atomic absorption spectrometry.