In this study, the concentration of major and trace elements was measured in rainwater samples to identify their possible sources. From January to April 2014, in Hamedan province, west of Iran, 23 rainwater samples were collected from one urban station and two rural stations. The volume-weighted mean (VWM) was 0.38, 0.88, and 0.52 meq L⁻¹ for calcium and 0.42, 0.35, and 0.44 meq L⁻¹ for magnesium in Hamedan, Kushkabad, and Nematabad stations, respectively, indicating that the above cations were dominant in these areas. Rainwater samples in the Hamedan station showed the lowest pH value with a VWM of 6.38 due to the lowest amount of neutralizing ions. The results indicated that calcium and magnesium were the key contributors to acid rain neutralization in all three stations. Although zinc had the highest concentration in the rainwater samples, the calculated crustal enrichment factor showed that cadmium had maximum enrichment factors in three stations. Because of the more anthropogenic activities, Hamedan station had the highest concentration of trace elements. The crustal enrichment factors showed that cadmium, nickel, and zinc were obtained primarily from anthropogenic activities and that iron, manganese, potassium, calcium, and magnesium may have originated from terrestrial sources.

在这项研究中，测量了雨水样本中的主要和微量元素的浓度，以确定其可能的来源。2014年1月至4月，在伊朗西部的哈马丹省，从一个城市站和两个农村站采集了23个雨水样本。钙的体积加权平均值 (VWM) 为 0.38、0.88 和 0.52 meq L ^-1，而钙为 0.42、0.35 和 0.44 meq L ^-1Hamedan、Kushkabad 和 Nematabad 站的镁含量分别为 ，表明上述阳离子在这些地区占优势。由于中和离子含量最低，哈马丹站的雨水样本显示出最低的 pH 值，VWM 为 6.38。结果表明，钙和镁是所有三个站点酸雨中和的关键因素。尽管雨水样品中锌的浓度最高，但计算的地壳富集因子显示镉在三个站点中的富集因子最大。由于人为活动较多，哈马丹站的微量元素浓度最高。地壳富集因子表明镉、镍和锌主要来自人为活动，铁、锰、钾、钙、