湘江流域土壤重金属元素地球化学背景值与基准值研究
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鲁江, 朱丽芬, 骆检兰, 刘显丽
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Geochemical background and baseline values of heavy metals in soils in the Xiangjiang River Basin
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LU Jiang, ZHU Li-Fen, LUO Jian-Lan, LIU Xian-Li
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表4 深层土壤重金属元素箱图法结果
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Table 4 The results of box plot method of heavy metal elements in deep soil
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| 元素 | 最大值 /10-6 | 最小值 /10-6 | 平均值 /10-6 | 标准差 /10-6 | 异常下限 /10-6 | 剔除百分 数/% | | As | 30.17 | 0.63 | 13.74 | 6.24 | 26.23 | 8.51 | | Cd | 0.35 | 0.03 | 0.15 | 0.07 | 0.30 | 16.54 | | Cr | 124.30 | 32.90 | 78.77 | 18.34 | 115.45 | 1.97 | | Cu | 45.10 | 6.80 | 26.22 | 7.42 | 41.07 | 2.52 | | Hg | 0.23 | 0.02 | 0.10 | 0.05 | 0.19 | 9.31 | | Ni | 52.80 | 6.40 | 29.46 | 9.33 | 48.12 | 4.58 | | Pb | 53.40 | 11.00 | 32.11 | 8.20 | 48.52 | 7.74 | | Zn | 137.30 | 28.00 | 83.22 | 20.54 | 124.31 | 6.08 |
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