铅锌矿区不同科属植物对重金属的吸附累积能力研究

Adsorption and Accumulation of Heavy Metals by Plants of Different Families andGenera in Lead-zinc Mining Area

通过野外实地调查来研究巴彦淖尔市东升庙矿区的不同科属的植物对重金属富集能力做比较.结果表明,这18种科属植物中,其中Zn这两种重金属在18种科属植物含量最高,这是由于该矿区土壤中Zn含量较高,植物的适宜性导致植物体内这两种重金属含量偏高。富集系数而言,车前科在其他科属植物中较为突出,具有富集重金属Zn的潜力,富集系数分别为0.465。旋花科植物对Cu有富集潜力,富集系数为0.661。天门冬科植物对重金属Ni富集潜力最大,富集系数为0.761。芸香科植物Cd富集系数最大,为0.995,对重金属Cd有很好的富集潜力。

Field investigation was conducted to study the heavy metal accumulation ability of different families and Genera in Dongshengmiao mining area of Bayannur city.The results showed that the contents of Zn and Zn in 18 families and Genera were the highest,which was due to the high content of Zn in soil and the high content of Zn in plants.As far as the enrichment coefficient is concerned,plantaginae is prominent in other families and genera,and has the potential to enrich heavy metal Zn,the enrichment coefficient is 0.465 respectively.Convolvulaceae plants have the potential to enrich Cu,and the enrichment coefficient is 0.661.The enrichment potential of Asparagaceae plants to heavy metal Ni is the greatest,and the enrichment coefficient is 0.761.The Cd concentration coefficient of rutaceae is 0.995,which has a good potential for the accumulation of heavy metals.