李氏禾对电镀污泥污染土壤中铬铜镍的吸收和积累  

Accumulation of Cr,Cu and Ni by Leersia hexandra Swartz in Soil Contaminated with Electroplating Sludge

作　　者：陶笈汛[1] 张学洪[1] 罗昊[1] 刘杰[1] 廖永锋[1] 陈瑞标[1] 

机构地区：[1]桂林理工大学广西环境工程与保护评价重点实验室,广西桂林541004

出　　处：《桂林工学院学报》2010年第1期144-147,共4页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(40663002);广西科学基金项目(桂科青0640072;0728095);广西高校人才小高地建设"环境工程"创新团队资助计划项目(桂教人[2007]71)

摘　　要：通过盆栽试验研究了在电镀污泥(0、25%、50%、75%、100%)污染土壤中生长的李氏禾对Cr、Cu、Ni复合污染的耐受和积累能力。100%电镀污泥中总Cr、Cu、Ni含量分别为32 452.91、15 784.82、12 115.27 mg/kg。结果表明,李氏禾能够在25%电镀污泥中保持正常生长,地上部Cr、Cu、Ni含量随着土壤重金属含量增加而显著升高;Cr、Cu、Ni积累量在100%电镀污泥中可达70.87、41.68、43.18μg/株。李氏禾对较高浓度重金属复合污染土壤中的Cr、Cu、Ni有较强的耐受和积累能力,在重金属复合污染土壤的植物修复方面具有一定潜力。Experiments about soil amended with electroplating sludge（0,25%,50%,75%,100%）study the metal tolerance and accumulation by Leersia hexandra Swartz.The total Cr,Cu and Ni concentrations are 32 452.9,15 784.82 and 12 115.27 mg/kg in 100% electroplating sludge respectively.The result shows that L.hexandra could survive in 25% electroplating sludge.The Cr,Cu and Ni concentrations in the shoots of L.hexandra increase significantly with the rise of heavy metals concentrations in soil,the accumulations of Cr,Cu and Ni in the shoots of L.hexandra are 70.87,41.68 and 43.18 μg/plant respectively.It can be concluded that L.hexandra presents strong abilities of metal tolerance and accumulation in heavy metal contaminated soil wit high Cr,Cu and Ni concentration,thus suitable for phytoremediation of Cr,Cu and Ni contaminated soil.

关 键 词：植物修复 李氏禾 电镀污泥 铬 铜 镍 

分 类 号：X53[环境科学与工程—环境工程]