Determination of gallium by inductively coupled plasma atomic emission spectrometry in nickel- and iron-based alloys with preliminary separation from the matrix

A procedure for separating the microcomponent of gallium from the macrocomponents of Cr, Mo, W, Ni and Co is proposed for determining gallium by inductively coupled plasma atomic emission spectrometry in nickel- and iron-based alloys (precision nickel alloys, alloyed and high-alloy steel). Sodium fluoride was used as a precipitant. Optimum conditions for gallium coprecipitation on the sediment during separation from the considered macrocomponents were determined. The detection limit of gallium during separation from macroquantities of Cr, Mo, W, Ni, Co was 5 × 10–4 wt. %.