CAJ | 학술논문

以我国典型有色金属尾矿库为研究对象,结合多元统计分析来探究尾矿库重金属的空间分布及污染来源。结果表明,尾矿库及周围非矿区林地重金属严重累积；尾矿库重金属有着明显的空间分布规律； Cu、 Zn、 Cd、 Pb显著相关( p<0.01), Cr、 Ni两者显著相关( p<0.05)。 Cr, Ni, Cu, Zn, Cd, Pb 重金属潜在生态危害系数平均值分别为4.721,27.287,27.711,68.478,2624和1211,其大小顺序为： Cd>Pb>Zn>Cu>Ni>Cr。尾矿库中89%以上区域为很强生态危害级别, Cd和Pb为该矿区潜在生态危害主要贡献因子。
이아국전형유색금속미광고위연구대상,결합다원통계분석래탐구미광고중금속적공간분포급오염래원。결과표명,미광고급주위비광구임지중금속엄중루적；미광고중금속유착명현적공간분포규률； Cu、 Zn、 Cd、 Pb현저상관( p<0.01), Cr、 Ni량자현저상관( p<0.05)。 Cr, Ni, Cu, Zn, Cd, Pb 중금속잠재생태위해계수평균치분별위4.721,27.287,27.711,68.478,2624화1211,기대소순서위： Cd>Pb>Zn>Cu>Ni>Cr。미광고중89%이상구역위흔강생태위해급별, Cd화Pb위해광구잠재생태위해주요공헌인자。
To investigate the geochemical characteristics and to assess the potential ecological risk of heavy metals in the tailing areas, the samples were collected from the typical non-ferrous metal tailing in mining district, China. The spatial distribution and source of heavy metals were identified through multivariate analysis. The average concentrations of Cr, Ni, Cu, Zn, Cd and Pb were higher than their corresponding background values. Multivariate statistical analyses, correlation coefficient showed that significant correlations existed among Cu, Zn, Cd and Pb(p<0. 01), Cr and Ni(p<0. 05). The average values of potential ecological risk were 4. 721, 27. 287, 27. 711, 68. 478, 2624 and 1211 for Cr, Ni, Cu, Zn, Cd and Pb, respectively. The potential ecological risk factor of heavy metals was in the order of Cd>Pb>Zn>Cu>Cr>Ni. More than 89% of samples were moderately or highly contaminated with heavy metals. Cd and Pb shared high potential ecological risk in most of sampling sites.