摘要
对郑州市近郊794个蔬菜样品中的Pb、Cd污染状况进行了调查,并分析了污染来源。结果表明,郑州地区蔬菜中的重金属污染主要为铅、镉元素,绿叶菜类铅超标率最高为14.5%,根茎类蔬菜超标率最低为3.3%;豆类镉超标率最高达3.8%,根茎类蔬菜未见有超标样品检出。超标蔬菜与土壤环境中重金属含量没有明显的相关性;污染蔬菜样品主要集中在城区周边、工业区、矿区和公路附近。
The contents of heavy metals（Pb. Cd）in 794 vegetables in the suburbs of zhengzhou were investgated and analyzed , the results showed that the vegetables tested of zhengzhou were partially polluted by Pb and Cd; the Pb exceeding standard ratio Of the leaf - vegatables is the highest（ 14.5 % ）, the root vegetables is the lowest（3.3 % ）. the Cd exceeding standard ratio of Beans vegetables is up to 3.8 %, the root vegetables have＇ t been found exceeding the standard. The content of heavy metal in polluted vegetables and soil environment has no certain relation; Contaminated vegetables are mainly concentrated in the surrounding area, industrial area, mining area and adjacent to the highway.
出处
《微量元素与健康研究》
CAS
2012年第1期33-35,共3页
Studies of Trace Elements and Health
关键词
铅
镉
污染
蔬菜
Lead
Cadmium
Pollution
Vegetables
