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中文摘要：
研究同一城市不同区域土壤中锰、铅和铬的化学形态分布情况。用BCR连续提取法提取土壤中锰、铅和铬的不同化学形态,用原子吸收光谱法测定各元素的总量及相关形态的含量。不同区域土壤中3种重金属总量的分布规律一致,大小依次为Mn〉Pb〉Cr。3种金属元素的形态分布有其各自规律,但均以不活泼的残渣态为主。
英文摘要：
To study the speciation distribution of Manganese, Lead and Chromium in different regional soils of the same city. The BCR continuous extraction was used to separate the species of manganese, lead and chromium in soils. Total amounts and the concentrations of species of Mn , Pb and Cr were determined by atomic absorption spectrometry（AAS）. Results indicated that the content of three heavy metals in soils was in a sequence of Mn 〉 Pb 〉 Cr. Speeiation distribution of the three elements was different, in which the mainly existed in residual species .
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