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In this paper, a sample preparation method based on ultrasound assisted leaching of Pb, Cu, Zn, Ni and Mn from river and pond sediment samples under ultrasonic effect has been described. Parameters influencing leaching such as sonication time, sample amount, particle size and extractant were fully optimized. Leachatants obtained upon sonication were directly nebulised into an air-acetylene flame for...
The effects of ultrasonication on the leaching of trace metals form sediments as a function of pH have been investigated using atomic absorption spectrometry. Cu, Pb, Ni, Zn and Mn were leached from sediments by ultrasonic effect using phthalate buffers at pH values of 2.2–6.0. Parameters influencing leaching, such as leaching time, solution matrix, wet or dry sample and final pH were evaluated. Results...
A sample preparation method based on ultrasound assisted pseudo-digestion of Pb, Cu, Zn and Ni from street dust samples under ultrasonic effect has been described. Parameters influencing pseudo-digestion, such as sonication time, sample mass, particle size and solvent system were fully optimized. Final solutions obtained upon sonication were analyzed by atomic absorption spectrometry. The best conditions...
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