Relationship and enrichment of heavy metals in soil of sewage irrigation area in Guangdong province, China
The research reveals the relationship and enrichment of heavy metals in soil of sewage irrigation area in Guangdong province, southern China. Samples were collected from topsoil (0-10cm) and subsoil (30-40cm), and the total HClO4. It is concluded that Cu, Zn, Cd, and Pb may be homologous or combined pollution, and Mn and Cr may be also homologous in soil. According to the result of cluster analysis, it is shown that Se and As may have the similar environmental geochemical behavior in topsoil, because the existing forms of them in environment are mainly acid anions. We can conclude that a significant degree of metal pollution exists in soil of sewage irrigation area, particularly for Cd, Cu, Pb and Zn. The degrees of contamination of heavy metals in topsoil (CF of Cd 8.1, Cu 7.0, Zn 5.9, Pb 3.6, Ni 2.1, As 1.8, Cr 1.6, Se 1.5) were higher than that in subsoil (CF of Cd 6.0, Cu 3.4, Zn 3.7, Pb 2.7, Ni 2.0, As 1.6, Cr 1.5, Se 1.4). EF values show deficiency enrichment with Ni, Se, Cr and As, low enrichment with Cu, Zn and Pb, and moderate enrichment with Cd in topsoil in study area, while deficiency enrichment with Ni, Se, Cr, Pb and As, and low enrichment with Cu, Zn and Cd in subsoil in study area.It should be recognized that the hazards posed by food production in sewage irrigation areas may become a common hazard for human.
Guanxing Huang Jichao Sun Jihong Jing Jingtao Liu Yuxi Zhang Ying Zhang Xiaoping Xiang Haiwei Cui
Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences Shijiazhuang, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）