【摘要】 通过对西安市郊区的9种蔬菜50个样品的可食部分中重金属元素的监测 ,探明了蔬菜中重金属汞、砷、铅、铬、镉的含量及分布特征。结果表明 ,铅是西安市郊区蔬菜中的主要污染元素 ,在检测的9种蔬菜样品中 ,铅的超标率为48.0 % ,最高超标6.91倍 ;铬和镉的污染仅表现在个别蔬菜中 ,超标率分别为4.0 %和2.0 % ,最高超标分别为5.20倍和1.32倍 ;汞、砷无超标现象更多还原

【Abstract】 A survey was conducted to have detected heavy metals in 50 samples representing edible parts of 9 vegetables taken from outskirts of Xian City, revealing contents and distribution of Hg, As, Pb, Cr and Cd in the plant tissue. It has been indicated that lead is the main pollutant in vegetables collected from the tested region. Of 50 samples of 9 vegetables, 48% of the tested samples contained the pollutant exceeding the concentration of official tolerance.更多还原