The catchment basin of Bandan River in Hamoun territory in E-Iran was studied to determine the origin of river sediments and its contaminant potential for the Hamoun Lake pollution. Thirty-four stream bed samples were analyzed for major oxide and trace elements. Geochemical discriminant diagram represents litharenite composition for the river sediments. On the discriminant functional diagram, the samples show oceanic arc setting with sedimentary quartzitic and intermediate volcanic sources, which almost correspond to the current geodynamic condition of the present covenant. The toxic elements Pb, As, Cr, Ni, Co, Zn, Cu, Mn, V, and Se were analyzed in all samples to evaluate the pollution potential using index of geo-accumulation (I_geo). According to I_geo value, soils were uncontaminated to moderately levels with Pb and Ni, while moderately contaminated with Cr, strongly contaminated with As and strongly to extremely contaminated with Mo. Statistical studies concluded high correlation between the examined elements and indicate that the volcanic rocks are common source of the pollutant elements in the studied catchment basin. Chromium and Ni can also be originated from ophiolitic rocks in the region. Therefore, geogenic factors control the contamination of river sediments, which may lead to Hamoun Lake pollution.

研究了伊朗伊朗哈穆恩地区班丹河的流域，以确定河流沉积物的起源及其对哈穆恩湖污染的潜在污染。分析了34个流化床样品中的主要氧化物和痕量元素。地球化学判别图表示河流沉积物中的锂辉石成分。在判别功能图上，样品显示了沉积弧状石英和中间火山源的洋弧环境，这几乎与本公约的当前地球动力学条件相对应。对所有样品中的有毒元素Pb，As，Cr，Ni，Co，Zn，Cu，Mn，V和Se进行了分析，以利用地质累积指数（I _geo）评估污染潜力。据我_地理值，土壤未被Pb和Ni污染到中等水平，而被Cr中等污染，被As严重污染，而被Mo严重污染。统计研究得出结论，所检查的元素之间高度相关，表明火山岩是常见的污染源。被研究流域中的污染物元素。铬和镍也可能来自该地区的脂橄榄岩。因此，地质因素控制着河流沉积物的污染，这可能导致哈蒙湖的污染。