Разработка способа дугового Атомно-эмиссионного спектрального анализа картофеля без кислотной минерализации

Abstract

Technique developed for the arc atomic emission spectral analysis of potatoes and mashed potatoes without preliminary acid digestion is described. The following optimal conditions of analysis were obtained: sample weight of 11 mg, the interelectrode distance of 3.5 mm, the current strength of 20 A, the amount of the spectral additive of 0.5% NaCl, dilution of the sample with carbon powder 1:2. Technique allows to get greater signal-to-noise ratio (lower limits of detection) and level matrix influence when use artificial standard mixtures based on carbon powder.