北京市房山区土壤重金属元素分布、富集特征及来源解析

韩冰, 黄勇, 李欢, 安永龙

Distributions, enrichment characteristics, and sources of heavy metals in soils in Fangshan District, Beijing

HAN Bing, HUANG Yong, LI Huan, AN Yong-Long

表3 重金属元素地球化学特征值统计

Table 3 Geochemical parameters of soil heavy metal elements

参数 As Cd Cr Cu Hg Ni Pb 表层 X ˉ/10-6 9.47 0.189 58.8 25.8 0.095 27.8 28.0 Xmed/10-6 9.45 0.156 58.0 21.9 0.055 26.8 25.2 S/10-6 2.72 0.148 9.3 14.8 0.144 7.0 13.0 CV/% 28.7% 78.2% 15.8% 57.6% 151.8% 25.2% 46.5% Xmin/10-6 2.27 0.058 33.85 9.2 0.012 11.6 11.7 Xmax/10-6 20.33 1.395 99.97 125.4 1.093 66.1 123.5 深层 X ˉ/10-6 10.01 0.139 58.0 22.1 0.051 26.9 22.3 Xmed/10-6 10.16 0.103 59.6 21.8 0.034 26.9 20.4 S/10-6 4.34 0.108 12.3 8.9 0.081 7.7 10.7 Cv/% 43.3% 77.4% 21.3% 40.3% 159.3% 28.7% 48.0% Xmin/10-6 2.46 0.040 12.51 6.2 0.008 8.5 6.5 Xmax/10-6 24.76 0.564 81.69 48.5 0.533 46.0 75.9 北京市表层土壤Xmed/10-6[16] 8.50 0.140 58.0 23.0 0.066 25.0 24.0 北京市深层土壤Xmed/10-6[16] 8.40 0.095 58.0 20.0 0.017 26.0 20.0 海河流域表层土壤Xmed/10-6[16] 9.70 0.140 66.0 23.0 0.035 28.0 22.0 海河流域深层土壤Xmed/10-6[16] 9.70 0.100 65.0 22.0 0.016 29.0 19.0