###### Abstract  
Geochemical investigations of total suspended particulates (TSP) help detect hotspots and emission sources in port cities with stevedering operations. The aim was to reveal these sources via geochemical indices (\(g\)). TSP were collected in Klaipeda using original passive samplers in ten sites during four periods, during one of them, in ten additional sites near iron ore stevedoring (IOS). The contents of 22 elements (PHEs, crustal, Br, Cl) were determined by EDXRF in TSP and characteristic dust (CD) of stevederod iron ore, apatite, phosphoric, potassium fertilizers, and in waste incineration ash. Median Fe content in TSP near IOS was -29%. The significant anthropogenic origin of clusters Fe-Cr, Sr-P, V-Ni-Zn-Cu, Pb-As, and Mg-Ca, Br-S-Cl was confirmed by \(gI\) mapping and analysis of CD. Significant temporal variability of Cl, S, Sr, Ni, Br, V, and Zn due to weather changes was revealed. Near IOS, significantly higher values of \(gI\) were found for Fe and Cr, while far from IOS, for K, Sr, Ti, Rb, Cu, Al, Si, Zr, Ca, Mg. Significantly higher values of normalized enrichment factor near IOS were not only for Fe and Cr, but also for As, Pb, S, Mn, Br, and Cl.  
total suspended particulates; stevedoring; Spectro Xepos EDXRF analysis; geochemical indices and mapping; cluster and principal component analysis; hotspots of contaminants +
Footnote †: journal: Medicalproduction types and specific operations in ports, there is a clear lack of multi-elemental analysis data which could help in characterization of these types. The contents of wide groups of elements have been used for determination of the markers or indicators of different in-stack industrial emissions [4; 14; 15], but only for other urban areas, i.e., not ports. Moreover, most published manuscripts are limited to elemental analysis of dust spread within port territory or in adjacent sites [9; 16; 17; 18]. There is a lack of studies revealing elemental spread over further distances, and especially those that show the impact of bulk cargo operations on the attmogeochemical condition of surrounding residential areas. In Klaipeda, large volumes of iron ore, potassium, phosphorus, ammonium fertilizers (and raw materials for the production of the latter two), and cement are stevedored. A few studies of the stevedoring works and their possible pollutants were carried out in 2005 [16; 17], but the researchers did not analyze the spread of PM into ambient air of adjacent residential districts. However, in 2007, detailed exploratory geochemical investigations of topsoil cover revealed an intense pedogeochemical multi-elemental anomaly in the northern part of the city, characterized by significant enrichment in heavy metals, especially chromium [19]. In 2019, during urban monitoring, this pedogeochemical anomaly was \"discovered\" again. A year earlier, in 2018, the anxiety and concern of the community in the northern part of Klaipeda city about visually noticeable \"black\" dust was reported [20].  
Taking into account what is described above and the main advantage of continuous accumulation of sufficient dust for quantitative analysis, it was decided to use artificial passive samplers for the study. They have served the primary purpose of this study: (i) to define anthropogenic anomalies of contaminating hotspots and (ii) to try to indicate their emissions sources by investigating the spread of 22 analytes, including potentially harmful elements (PHEs) such as As, Cr, Cu, Ni, Pb, V, Zn, and S, twelve so-called crustal, i.e., Al, Ca, Fe, K, Mg, Mn, P, Rb, Si, Sr, Ti, and Zr, and two halogens--Br and Cl.