中文摘要：

研究了黄铁矿采矿场12种矿样与采矿场附近降尘累积土（飘积土）和地面土中As、Cd、Co、Cr、Cu、Mo、Ni、Pb、T1、Ba和Se的分布．将土壤学中元素比的概念引入痕量元素溯源，提出元素相似比和相似度2个概念，结合元素相关性识别飘积土和地面土中的来自矿尘的痕量元素．结果表明，在2．0～16．0cm的飘积表土和地面表土中，大部分痕、微量元素的最低值均低于其背詈值（〈1km地面土中Pb和〉1km地面土中Cd和Co除外），而平均值和最高值均高于背景值（飘积土中的Cu、Se的平均值、〈1km地面土中Cr、〉1km地面土中Cu和上述全部样品中的Ba除外）．在18．0～36．0cm的飘积心土和地面心土中，大部分痕、微量元素的最低值和平均值均高于背号值（飘积心土的Co、Cu、Se和〉1kin地面心土Pb、Cu、Ba除外）．痕、微量元素呈亚层积聚特征．同时，相关系数r〉0．2的矿样元素，与飘积土和地面土至少有1个相似度〉0．5的元素相似比，相关系数r≥0．54的矿样元素，与飘积土和地面土有2个以上相似度〉0．5的元素相似比．据此可识别飘积土和地面土中的来自矿尘的痕量元素．

英文摘要：

In this paper, element distributions of As, Ba, Cd, Co, Cr, Cu, Mo, Ni, Pb, T1 and Se from twelve kinds of ore samples of pyrite mining area and from the accumulation soil of landing dust or the ground soil near mining area were studied. The concept of the element ratio of soil was introduced in tracing to the source of the trace element, the element similarity ratio and similarity were put forward, and correlation of ele- ment was combined, trace elements from mining dust in accumulation soil of landing dust and in the ground soil were distinguished. The results show, in 2.0 -16. 0 cm accumulation surface soil of landing dust and ground surface soil, most of the trace element contents are below the minimum background value （ 〈 1 km ground soil Pb, 〉 1 km ground soiI Cd and Co except） , and average and high content are higher than the background value （ 〈 1 km ground soil Cr, 〉 1 km ground soil Cu, accumulation soil of landing dust Cu or Se of average content and above all samples of the Ba except）. In 18.0 -36. 0 em of accumulation soil of landing dust and ground soil, the lowest and average contents of most of the trace element are higher than the background value （ accu- mulation soil of landing dust Co, Cu, Se and 〉 I km ground soil Pb, Cu, Ba except）. Trace elements show the second layer accumulation characteristics. At the same time, ore sample element with the correlation coefficient 〉 0. 2 between ore sample and accumulation soil of landing dust or ground soil have at least one element ratio of similarity 〉 0.5. Ore sample element with the correlation coefficient 〉 0. 5 between ore sample and accumula- tion soil of landing dust or ground soll have two or more element ratio of similarity 〉 0.5. Accordingly, trace el- ement can be distinguished from mine dust in accumulated soil of landing dust and ground soil.