皖南典型区耕地土壤重金属富集特征、来源识别及健康风险评估
杨艳, 刘彬, 夏飞强, 陈平峰, 张祥

Enrichment characteristics, source identification, and health risk assessment of soil heavy metals in typical cultivated land in the mountainous area of southern Anhui Province
YANG Yan, LIU Bin, XIA Fei-Qiang, CHEN Ping-Feng, ZHANG Xiang
表7 各元素不同地质累积指数级别的样品数占总样品数的百分比
Table 7 The proportion of heavy metals in different levels of geo-accumulation index
元素 Igeo≤0 0<Igeo≤1 1<Igeo≤2 2<Igeo≤3 3<Igeo≤4 4<Igeo≤5 Igeo>5
污染程度 无到中等 中等 中等到重度 重度 重度到极度 极度
Cr 99.0 0.9 0.1 0 0 0 0
Cu 62.1 36.9 1.0 0 0 0 0
Ni 95.4 4.4 0.1 0 0 0 0
Zn 53.4 44.8 1.6 0.1 0 0 0
Cd 20.7 42.8 20.6 11.8 2.7 0.8 0.6
Pb 93.9 6.0 0.1 0.1 0 0 0
As 65.0 24.2 7.0 3.1 0.6 0.1 0
Hg 3.4 51.5 41.0 4.0 0.1 0 0