农业环境科学学报2009，Vol.28Issue(11)：2307-2312,6.
珠江三角洲污灌区土壤中重金属含量特征
Heavy Metal Content Characteristics of Soil in Sewage Irrigation Area of Pearl River Delta
摘要
Abstract
With the rapid industrialization development in recent years, there are many sewage irrigation phenomenons in the Pearl River Delta. It is important to understand the distribution of heavy metals in soil in sewage irrigation area for soil pollution prevention and control planning in Pearl River Delta. The total content and available content of heavy metals(Cd, Cu, Zn, Pb, Mn, Ni, As, Cr and Se) in soil from sewage irrigation area in the Pearl River Delta were analyzed with 32 soil samples. The average content of total content of the nine heavy metals in soil from sewage irrigation area exceeded soil background value of Guangdong Province. Among of the nine heavy metals, Cd had the highest pollution degree, Se had the lowest pollution degree, Cd had the highest valid coefficient, and Ni had the lowest valid coefficient. The total contents of Cd, Cu, Zn and Pb decreased with the sampling depth increasing. The total contents of Ni, As, Cr and Se fluctuated or kept stable with the sampling depth increasing. The total content of Mn decreased firstly, and then rose remarkably with the sampling depth increasing. There was a remarkable or most remarkable positive correlation between total content and available content of Cd, Cu and Zn, and there was a remarkable positive correlation among of the total content of Cd, Cu and Zn, which indicated that the distribution of Cd, Cu, Zn and Pb in soil mainly affected by sewage irrigation.关键词
珠江三角洲/污灌区/土壤/重金属/全量Key words
Pearl River Delta/ sewage irrigation area/ soil/ heavy metals/ total content分类
资源环境引用本文复制引用
梁国玲,黄冠星,孙继朝,刘景涛,荆继红,张玉玺,陈玺,王金翠,向小平..珠江三角洲污灌区土壤中重金属含量特征[J].农业环境科学学报,2009,28(11):2307-2312,6.基金项目
中国地质科学院水文地质环境地质研究所项目(SK200801) （SK200801）
