摘要
对广州增城市简易生活垃圾填埋场封场土壤及植物重金属Cu、Zn、Cd、Cr、Ni进行调查及评价。重金属含量采用火焰原子吸收分光光度计测定。结果表明,填埋场区内封场土壤呈碱性,场外农业土壤呈酸性,土壤中Cd元素的污染贡献最大。3号封场土壤Cu元素含量、Cd元素含量超过珠三角土壤背景值,处于轻污染状态;场外5号土壤处于安全级别,其余点位土壤属警戒级别。场内主要有4种本土植物,分别为芦苇、薇甘菊、三叶鬼针草和芒萁。各植物体内重金属Zn含量均最高,Cd含量最低。
Heavy metals （including Cu, Zn, Cd, Cr and Ni ） in soil and plants from a sealed landfill were investigated and assessed. All the samples were collected from a landfill located in Zengcheng of Guangzhou, and the concentrations of heavy metals were determined by flame atomic absorption speetrophotometry. The results showed that the soil of the landfill was alkaline soil, and the agricultural soil near to the sealed landfill was acidic soil. The soil in this sealed landfill was polluted mainly by Cd element. The bare soil in the 3rd point was polluted slightly by Cu and Cd which exceeds the background value of soil in Pearl River Delta. The agricultural soil in the 5th point was in a safe state, while the soil in other points was in alert state. Besides, there were four kinds of native plant in the sealed landfill, which are Phrag- mites, Dicranopteris, Bidens pilosa, Mikania micrantha. In each plant, among five elements, the concentration of Zn was highest, and that of Cd was lowest.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2013年第4期714-720,共7页
Journal of Agro-Environment Science
基金
华南农业大学资源环境学院院长基金项目(ZHXY2010A001)
关键词
增城市垃圾填埋场
土壤
植物
重金属
调查评价
Zengcheng landfill
soil
plant
heavy metal
investigation and assessment
