柳江流域沉积物重金属生态风险评价及来源分析
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钟晓宇, 吴天生, 李杰, 郑国东, 卓小雄, 关东超, 王磊, 莫斌吉
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Ecological risk assessment and source analysis of heavy metals in sediments of Liujiang River Catchment
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Xiao-Yu ZHONG, Tian-Sheng WU, Jie LI, Guo-Dong ZHEN, Xiao-Xiong ZHUO, Dong-Chao GUAN, Lei WANG, Bing-Ji MO
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表7 柳江流域沉积物元素含量主成分分析结果
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Table 7 Results of PCA of heavy metal concentrations in sediments of Liujiang Rriver Catchment
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公因子 | 方差贡献 | 元素 | 因子 | 元素 | 因子 | 特征值 | 贡献率 | 累积贡献率% | PC1 | PC2 | PC3 | PC1 | PC2 | PC3 | 1 | 8.942 | 55.885 | 55.885 | As | 0.64 | 0.57 | -0.16 | Zn | 0.30 | 0.92 | 0.14 | 2 | 3.293 | 20.584 | 76.469 | Cd | 0.17 | 0.94 | 0.02 | P | 0.46 | 0.01 | 0.58 | 3 | 1.168 | 7.301 | 83.769 | Cr | 0.84 | 0.31 | 0.31 | S | -0.08 | 0.61 | 0.67 | 4 | 0.703 | 4.394 | 88.163 | Cu | 0.90 | 0.07 | 0.26 | Mn | 0.86 | 0.19 | -0.12 | 5 | 0.574 | 3.585 | 91.748 | Hg | 0.25 | 0.90 | 0.13 | Al2O3 | 0.94 | 0.05 | 0.14 | 6 | 0.337 | 2.107 | 93.855 | F | 0.25 | 0.90 | 0.13 | Fe2O3 | 0.90 | 0.27 | 0.26 | 7 | 0.268 | 1.677 | 95.533 | Ni | 0.92 | 0.21 | 0.21 | CaO | 0.02 | 0.70 | 0.11 | 8 | 0.243 | 1.519 | 97.052 | Pb | 0.14 | 0.86 | 0.32 | Corg | 0.46 | 0.38 | 0.74 |
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