山东省广饶县土壤重金属来源、分布及生态风险
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周旭, 吕建树
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Sources, distribution and ecological risk of soil heavy metals in Guangrao county, Shandong province
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Xu ZHOU, Jianshu LV
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表1 广饶县土壤重金属元素描述性统计(mg·kg-1) |
Tab. 1 Descriptive statistics of heavy metals in soils from Guangrao County (mg·kg-1) |
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重金属 | 范围 | 均值 | 中值 | 标准差 | 偏度 | 峰度 | 变异系数 | 山东省背景值[30] | 国家二级标准[31] | As | 5.2~17.2 | 10.8 | 10.3 | 2.64 | 0.44 | -0.50 | 0.24 | 8.9 | 30 | Cd | 0.07~0.29 | 0.13 | 0.13 | 0.03 | 1.10 | 2.54 | 0.25 | 0.07 | 0.3 | Co | 6.1~16.9 | 11.9 | 11.9 | 1.83 | -0.15 | 0.22 | 0.15 | 12.6 | - | Cr | 53.5~94.1 | 68.1 | 67.5 | 5.53 | 0.54 | 1.08 | 0.08 | 64.3 | 200 | Cu | 11.8~37.8 | 24.0 | 23.7 | 4.42 | 0.14 | 0.69 | 0.18 | 22.3 | 100 | Hg | 0.011~0.537 | 0.038 | 0.032 | 0.04 | 9.99 | 128.71 | 0.95 | 0.016 | 0.5 | Mn | 411~970 | 586 | 576 | 98.46 | 0.91 | 1.11 | 0.17 | 552 | - | Ni | 14.6~43.4 | 28.8 | 28.6 | 5.05 | 0.09 | 0.01 | 0.18 | 24.4 | 50 | Pb | 12.6~30.4 | 22.6 | 22.8 | 2.99 | -0.77 | 1.36 | 0.13 | 24.5 | 300 | Zn | 34.8~98.6 | 67.2 | 66.6 | 10.63 | -0.08 | 0.29 | 0.16 | 60.9 | 250 |
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