不同蔬菜对重金属汞、铬、砷、镉、铅积累效应的研究

Accumulation of Heavy Metals Hg,Cr,As,Cd,and Pb in Vegetable

为了对辽宁省葫芦岛龙岗区蔬菜生产基地蔬菜生产结构的调整提供科学的参考,采用原子吸收的方法,对该生产基地的土壤与蔬菜中重金属(Hg、Cr、As、Cd、Pb)的含量进行检测。结果表明:该蔬菜基地土壤中Hg的含量平均为0.42mg/kg,Cr的含量平均为52.20mg/kg,As的含量平均为34.92mg/kg,Cd的平均含量为0.93mg/kg,Pb的含量平均为98.49mg/kg,说明该地区的土壤中重金属含量基本符合农业生产的要求;该蔬菜基地蔬菜中Hg的含量平均为0.92μg/kg,Cr的含量平均为120.09μg/kg,As的含量平均为13.80μg/kg,Pb的含量平均为94.17μg/kg,Cd的平均含量为15.65μg/kg,并且所测定的蔬菜样本中甘蓝在5种重金属的含量上均比其他蔬菜的含量高,但也能符合国家卫生标准。此实验可为该蔬菜区蔬菜生产结构的调整提供一定的参考。

In order to provide scientific reference for vegetable production structure adjustment to one vegetable production areas in Longgang District,Huludao City,Liaoning province.Heavy metals Hg,Cr,As,Cd,and Pb content in the soil samples and vegetables sampled from this vegetable production areas were determined by using atomic absorption spectrometry.Results showed that,the heavy metals Hg,Cr,As,Cd,and Pb content in soil were 0.42 mg/kg,52.20 mg/kg,34.92 mg/kg,0.93 mg/kg,and 98.49 mg/kg,respectively that meet the requirements of agricultural production;and the heavy metals Hg,Cr,As,Cd and Pb content in vegetable were 0.92 μg/kg,120.09 μg/kg,13.80 μg/kg,15.65 μg/kg,94.17 μg/kg,respectively that also meet national health standards requirement.The heavy metal content of cabbage was more than other vegetable.The experiment would provide data support to adjust vegetable production structure.