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TL;DR
The plant contained elements important for human diet and metabolism, with concentrations of most elements exceeding general reference levels for plants, and were significantly higher in polluted areas compared to rural sites.
PLOS ONE · 13 authors, 5 centres
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The plant contained elements important for human diet and metabolism, with concentrations of most elements exceeding general reference levels for plants, and were significantly higher in polluted areas compared to rural sites.
The study analyzed the trace element content of the medicinal plant Centaurium erythraea collected from rural, lignite basin, urban, and highway-adjacent sites in Lower Silesia, Poland, using instrumental neutron activation analysis (INAA). Key findings include that the plant contains elements important for human diet and metabolism, and that concentrations of most elements (e.g., Al, As, Cl, Co, Cr, Fe, Mn, Mo, Ni, Rb, Se, Sr, V, Zn) exceeded reference levels for terrestrial plants. Concentrations of most elements were significantly higher in samples from polluted sites (lignite basin, urban areas, highway) compared to rural areas. The study also identified positive correlations between concentrations of various element pairs.