Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
754225 | Applied Acoustics | 2016 | 5 Pages |
Abstract
This work reports a fast and efficient method for metal extraction in inorganic fertilizers by combining heating and sonication using an ultrasonic bath. Microwave-induced plasma optical emission spectrometry (MIP OES) was applied for the determination of Cd, Cu, Cr, Mn, Pb, and Zn in the extracts. Higher efficiency of metal extraction (∼100% for all metals except to Cd) was obtained for the treatment of 150 mg of fertilizer with 4 mL of 50% (v/v) HCl sonicated for 10 min and heating at 85 °C. Extractions applying only heating did not provide satisfactory results. The proposed procedure is simple and contributes to reduced production of waste in comparison to the official method.
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Authors
Alexandre F. Lima, Fernanda F. Lima, Eduardo M. Richter, Rodrigo A.A. Munoz,