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3 黔西北深层土壤重金属元素均值与中国不同评价单元深层土壤元素均值比较
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Table 3 Comparison of mean values of heavy metal elements in deep soil of Northwest Guizhou and different evaluation units in China
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| 不同评价单元 | As | Cd | Cr | Cu | Hg | Ni | Pb | Zn | | 中国深层土壤中位数值[24] | 9(0.7) | 0.11(0.5) | 50(0.4) | 19(0.3) | 0.018(0.1) | 22(0.4) | 21(0.8) | 60(0.5) | | 中国城市深层土壤均值[3] | 10(0.8) | 0.11(0.5) | 73(0.5) | 24(0.4) | 0.042(0.3) | 29(0.5) | 23(0.8) | 68(0.6) | | 山东省深层土壤均值[25] | 8.7(0.7) | 0.092(0.4) | 62.6(0.5) | 21.3(0.3) | 0.016(0.1) | 27.9(0.5) | 21.4(0.8) | 58.6(0.5) | | 江苏省深层土壤均值[26] | 9.4(0.7) | 0.085(0.3) | 75.6(0.5) | 23.4(0.4) | 0.025(0.2) | 32.8(0.5) | 22(0.8) | 64.8(0.6) | | 贵阳市深层土壤均值[27] | 23.99(1.8) | 0.296(1.2) | 100.9(0.7) | 46.9(0.7) | 0.222(1.7) | 42(0.7) | 38.9(1.4) | 106.1(0.9) | | 成都市区深层土壤均值[3] | 13(1.0) | 0.13(0.5) | 81(0.6) | 30(0.5) | 0.047(0.4) | 37(0.6) | 23(0.8) | 76(0.7) | | 重庆市区深层土壤均值[3] | 5(0.4) | 0.11(0.5) | 80(0.6) | 26(0.4) | 0.06(0.5) | 32(0.5) | 26(0.9) | 80(0.7) | | 昆明市区深层土壤均值[3] | 9(0.7) | 0.27(1.1) | 97(0.7) | 69(1.1) | 0.132(1.0) | 44(0.7) | 41(1.5) | 90(0.8) |
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