Abstract Atmospheric trace elements (Al, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, V, Zn) in particulate matter have been measured since 1996 at Pallas, a subarctic site in Finland. The results indicate a very low level of pollution as the concentrations were among the lowest measured in Europe. The annual average concentration during the whole time series (1996–2018), from the lowest values to the highest, was Co

中文翻译：

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1996-2018年亚北极地区大气重金属的趋势和来源解析

摘要 自 1996 年以来，芬兰亚北极地区帕拉斯 (Pallas) 对颗粒物中的大气微量元素 (Al、As、Cd、Co、Cr、Cu、Fe、Mn、Ni、Pb、V、Zn) 进行了测量。结果表明污染水平非常低，因为浓度是欧洲测得的最低水平之一。整个时间序列（1996-2018）的年平均浓度，从最低值到最高值，Co