摘要
依据沉积学原理和水体沉积物重金属的环境地球化学特征,将地积累指数与改进的多变量Chernoff脸谱图相结合,选择江西德兴铜矿附近的乐安江表层沉积物以及德国西南部Mannheim和Worms周围若干湖泊的表层沉积物作为研究对象,开展不同地域、不同类型水体沉积物中重金属积累的对比分析和污染状况的综合性定量评价.多变量脸谱图能清晰地反映出两区域沉积物中重金属的污染特征和空间分布模式.
Based on principle of sedimentology and geochemical characteristics of heavy me tals, we selected surface sedimental samples collected from: 1) Lean river which flew through Dexing copper mine in south of China,and 2)several lakes located in southwest of germany. Concentrations of various heavy metals in these samples were determined, and the relative index of geoaccumulation (Igeo) for heavy metal pollution was calculated as well. Furthermore,the comparative analysis of heavy metal accumulation between two regions was comprehensively carried out by means of visualized multivariate graphical method--modified Chernoff face graph. Face graphs intuitively demonstrated the situationof heavy metal contamination and related distribution in these areas.
出处
《环境化学》
CAS
CSCD
北大核心
1997年第1期23-29,共7页
Environmental Chemistry
