| Cu,Zn,Ni,Cr,Pb,Cd and Ba in electroplating sludge were extracted by 3 standard methods of solid waste leaching, and determined by inductively coupled plasma atomic emission spectrometry. Extraction experiments on the leaching agents, diameter of sample particles, liquid solid ratio, oscillation time and form resulted that acetic acid buffer solution, smaller size of sample particles, flip oscillation and larger liquid solid ratio would produce more amount of heave metals in lixivium. Liquid solid ratio and oscillation time both had effect on heavy metal leaching, but it was difficult to achieve its optimum. |
