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

摘要： 利用蚕豆根尖微核技术监测化工铬渣堆场渗出液的遗传毒性，结果表明，化工铬渣渗出液含有较高浓度的Cr6+，能明显诱导蚕豆根尖细胞微核的形成，具有较强的遗传毒性。当铬渣渗出液中Cr6+浓度为186.6460 mg/L时，微核率达到最大。铬渣渗出液所诱导的微核率与阴性对照组相比有极显著差异。

关键词: 铬渣, 渗滤液, 蚕豆根尖, 微核