摘要
采用因子分析法对2009年5月采自连云港近岸表层沉积物中的重金属(Cu、Pb、Zn、Cd、C r、As)、常量元素(A l2O3、Fe2O3、MnO、TiO、CaO)、有机碳和粒度等数据进行了综合分析研究,以此定量判别重金属的来源方式和富集形态。借助于重金属和A l散点图的线性回归分析验证了因子分析获得的结论,结果表明:Cu、Zn和C r以自然来源为主,主要赋存于细粒粘土矿物中;Pb、Cd和As除受环境背景贡献外,还受到人为活动排污的明显影响。
24 samples in the surface sediments were collected from the Lianyungang areas during May 2009. The concentrations of heavy metals （Cu, Pb, Zn, Cd, Cr, As） , major compounds （Al2O3 , Fe2O3, MnO, TiO, CaO） , total organic carbon and grain size were measured. The factor and regression analysis were used to distinguish the factors of lithogenic and anthropogenic origin. The results showed that Cu, Zn and Cr concentrations were controlled by the natural local background value, while Pb, Cd and As were obviously contaminated by the human activities.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2011年第4期520-524,共5页
Marine Environmental Science
基金
中国近海海洋综合调查与评价专项项目(908-01-BC14)
关键词
连云港
沉积物
重金属
地球化学特征
源解析
Lianyungang
sediments
heavy metals
geochemical characteristics
sources analysis
