关键词: 铬渣, 渗滤液, 蚕豆根尖, 微核

Abstract: The mutagenicity of chromium residue leachate in root tip cells of Vicia faba was studied using micronucleus assay in this study. It was showed that chromium residue leachate contained high concentration of Cr6+, with strong genetoxic, and could induce the formation of micronuclei in root tip cells of Vicia faba obviously. At the Cr6+density of 186.6460mg/L, the micronucleus rate induced by chromium residue leachate reached the highest. There are very significant differences between the micronucleus rates induced by chromium residue leachate and that of negative control.

Key words: chromium residue, leachate, root tip of Vicia faba, micronucleus