The purpose of this study was to determine the content of twenty-two biogenic elements (BEs) and potentially toxic elements (PTEs) in the soil and fresh leaves from 43 different locations, in order to examine their bioaccumulation potential. Analyses of soil and plant material were carried out by using Inductively Coupled Plasma coupled with Optical Emission Spectroscopy (ICP-OES), a mercury analyzer (Hg), liquid chromatography (Cr), and AAS hybrid technique (As). The obtained results of the investigated elements were compared with the proposed limit values. The soil contamination factor (CF) as well as plant bioaccumulation factor (BAF) were calculated and the correlation analysis was performed. The results showed that the content of some BEs/PTEs in the soil were above the limit values, with two locations highly contaminated (CF > 6) with five (Cr(VI), Cu, Mn, Ni, V) and four (As, Co, Pb, V) elements. The content of As, Cd, Cr, and Pb in the leaves was higher than the permitted levels at some locations. The BAF was high (K, Ca, Zn, As), medium (Mg, Cu, B, Ni, Na, Pb), and low (Fe, Mn, Cr). The correlation between BEs/PTEs content in the leaves and soil was not significant, except for the following elements: Cd (0.37), Ca (0.34), As (0.36), Pb (0.30), and Na (0.25). The observed medium correlation suggested that the detected elements originated both from the atmosphere and the soil. Although at examined locations seemed to be mostly safe for consumption, a selective mechanism of adoption of certain BEs/PTEs requires continuous monitoring of their content in the future, to avoid quantities that can jeopardize human health through its consumption.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10685369PMC
http://dx.doi.org/10.1016/j.heliyon.2023.e22134DOI Listing

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