4.The optimized extraction technology followed as: the five kind of herbs were crashed to coarse powder, add alcohol to distilled water solution and made it became 50% alcohol solution as percolate liquor, percolate speed was 1 ml·kg~(-1)·min~(-1).
6.This paper studied hazardous constituent of percolate from the place that rubbish was buried Percolate sample was pretreated in proper method, major constituent was qualitative identified by GC/MS and AES first Then trace amount of Cu, Zn, Pb, Cr, Cd, Hg, Phenol, p methylphenol, aniline and anthracene in the percolate sample were successfully determined by atomic absorption spectrometry and reversed phase high pecformance liquid chromatography
