Comparison of Digestion Methods for Analysis of Heavy Metals in MSWI Bottom Ash
This work aims to develop a proper digestion method for measurement of heavy metal content in municipal solid waste incineration (MSWI) bottom. Different digestion methods by HNO3, HNO3/HCl, HNO3/HCl/HClO4, HNO3/HCl/H2O2, HNO3/HClO4, HNO3/H2O2, were compared in digestion efficiency, and Cu, Pb, Zn and Cd were analyzed using atomic absorption spectrum (AAS). The method using mixed HNO3/HCl/HClO4 was recommended for digestion of MSWI slag for measurement of Cu, Pb, Zn, and the method of HNO3/H2O2 recommended for digestion for measurement of Cd.
H. Y. Zhang et al., "Comparison of Digestion Methods for Analysis of Heavy Metals in MSWI Bottom Ash", Key Engineering Materials, Vols. 474-476, pp. 1075-1080, 2011