期刊论文

Effects of three conditioners on plant enrichment and matrix forms of heavy metals in lead-zinc slag

中文

环境污染与防治

1001-3865

2019

41

9

1026-1031

10.15985/j.cnki.1001-3865.2019.09.006

国家环境保护公益性行业科研专项(No.201509037) 湖南省环保科研项目(湘财建指〔2016〕59号)。

本校为第一机构

以衡阳市某铅锌尾矿库的矿渣作为土壤基质,泥炭土、红壤、蛭石作为改良剂,夹竹桃作为受试植物,进行室外盆栽试验,考察了3种改良剂对夹竹桃生长、重金属(Pb、Zn)富集转移能力以及土壤基质中Pb、Zn形态的影响。结果表明:(1)在5%(质量分数,下同)~15%的添加量下,3种改良剂均显著(p泥炭土>红壤。(2)夹竹桃地下部分Pb、Zn含量高于地上部分,添加改良剂后地上部分与地下部分Pb、Zn含量降低,说明改良剂高效抑制了重金属在夹竹桃中的富集;红壤与蛭石可抑制夹竹桃体内Pb的转运,但泥炭土却对Pb的转运起促进作用;除蛭石15%处理外,其余所有处理均促进了Zn在夹竹桃体内的转运。(3)3种改良剂在不同添加量下均显著...

In order to investigate the performance of three conditioners,outdoor pot experiments were conducted with slag of a lead-zinc tailings pond in Hengyang City as the soil matrix,peat soil,red soil and vermiculite as conditioners,and oleander as a test plant. The effect of three conditioners on growth of oleander was investigated,the accumulation and transfer of heavy metals (Pb,Zn) in plant as well as the form changes of Pb and Zn in soil matrix were also analyzed. The results showed that: (1) under the addition of 5% (mass fraction,the same below)-15%,the three conditioners significantly (p pea...