Concentrations and spatial distribution of heavy metals on the left and right banks of the river Nemunas bottom sediments are analyzed in this article. The research methodology of X-ray fluorescence spectrometry for bottom sediments and operating principles of XL2 spectrometer used for analysis are overviewed. The results of analysis are presented and compared with LAND 20-2005 requirements as well as studies that were carried out previously. The influence of Alytus city for Nemunas river sediments quality is assessed. Dischargers formed additional samples which were taken and included to the list of ordinary samples. The trend of heavy metals (Cd, Cu, Cr) concentrations showed the growth of pollution downstream the urban area. The estimated Zd (total pollution) values clearly indicated higher contamination by heavy metals on the left bank of Nemunas River. Extensive surveys of river sediments allow assessing the extent of anthropogenic impact, which can be harmful to the river ecosystem and human health.

本文分析了尼穆纳斯河底沉积物左右两岸的重金属浓度和空间分布。概述了底部沉积物的X射线荧光光谱研究方法和用于分析的XL2光谱仪的工作原理。介绍分析结果，并将其与LAND 20-2005要求以及之前进行的研究进行比较。评估了阿利图斯市对尼穆纳斯河沉积物质量的影响。放电器形成了另外的样品，这些样品被采集并包括在普通样品列表中。重金属（Cd，Cu，Cr）的浓度趋势表明，市区下游的污染有所增加。估计的Zd（总污染）值清楚地表明了尼穆纳斯河左岸重金属的污染程度更高。广泛的河流沉积物调查可以评估人为影响的程度，这可能对河流生态系统和人类健康有害。