Ultrasound in the determination of lead, copper and cadmium in the sugar and products on its basis

Abstract

The use of the simultaneous action of two ultrasonic frequencies and pulsed ultrasound in the analysis of sugar-based products for lead, copper and cadmium have been studied. It is shown that the use of two-frequency ultrasound improves the metrological performance analysis as compared to use only a single ultrasonic frequency. The technique of atomic absorption determination of lead, copper and cadmium with sensitivity 0,067, 0,013 i 0,004 mg / kg respectively have been proposed.