风成砂覆盖区地电化学提取前后土壤中元素赋存状态变化研究
孙彬彬, 曾道明, 刘占元, 周国华, 贺灵

Variation of modes of occurrence of elements in soil before and after the geo-electrochemical extraction in eolian sand covered area
Bin-Bin SUN, Dao-Ming ZENG, Zhan-Yuan LIU, Guo-Hua ZHOU, Ling HE
图4 电提取前后土壤中Pb全量及各相态含量空间变化