黔西北地区土壤重金属地球化学背景及管理目标值
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孟伟, 莫春虎, 刘应忠
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Geochemical background and management target values of heavy metals in soil in northwestern Guizhou Province
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MENG Wei, MO Chun-Hu, LIU Ying-Zhong
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表1 黔西北深层土壤重金属含量特征与管理目标值
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Table 1 The content of heavy metals in deep soil of northwest Guizhou and its management target value
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元素 | 剔除前 | 剔除后 | 变化范围/10-6 | 数据类型 | 管理目标值/ 10-6 | 平均值/10-6 | 离差 | 最小值/10-6 | 最大值/10-6 | 平均值/10-6 | 离差 | As | 13.8 | 5.9 | 1.4 | 327.8 | 13.3 | 5.5 | 2.0~25.6 | 其他 | 25.6 | Cd | 0.270 | 0.121 | 0.019 | 10.90 | 0.244 | 0.095 | 0.028~0.512 | 其他 | 0.512 | Cr | 141.4 | 1.48 | 23.83 | 489.3 | 137.6 | 1.43 | 67.0~282.6 | 对数 | 282.6 | Cu | 70.2 | 31.0 | 1.94 | 386.4 | 65.1 | 29.3 | 6.5~123.7 | 其他 | 123.7 | Hg | 0.132 | 0.054 | 0.012 | 2.642 | 0.128 | 0.05 | 0.024~0.24 | 其他 | 0.24 | Ni | 61.5 | 14.9 | 7.71 | 157.65 | 61.3 | 14.6 | 46.7~75.9 | 其他 | 75.9 | Pb | 28.6 | 6.9 | 8.37 | 844.1 | 27.4 | 5.8 | 14.8~42.4 | 其他 | 42.4 | Zn | 118.4 | 24.2 | 18.11 | 902.9 | 116.0 | 22.0 | 70~166.9 | 其他 | 166.9 |
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