Abstract
Heavy metal contamination poses significant ecological and public health challenges owing to their persistence and toxicity in soil. This study evaluated the partitioning patterns of three indigenous Zimbabwean Fabaceae species namely; Indigofera setiflora, Pterocarpus angolensis and Pericopsis angolensis under natural conditions by determining essential and toxic metals (Al, Ca, Mg, Mn, Fe, Zn, Cu, Pb, Cd, and Cr) in leaves, bark and roots using atomic absorption spectrophotometry. Indigofera setiflora showed the highest aluminium content in the bark (0.88 ± 0.16 ppm) as well as calcium in leaves (38.32 ± 5.13 ppm) and roots (23.45 ± 2.14 ppm). Iron and zinc levels were higher in Indigofera setiflora bark (Fe: 16.95 ± 2.58 ppm) and roots (Fe: 14.90 ± 1.07 ppm; Zn: 16.03 ± 2.61 ppm). Pterocarpus angolensis exhibited a moderate aluminium concentration (0.58 ± 0.14 ppm), elevated leaf magnesium levels (47.88 ± 5.04 ppm), leaf zinc levels (19.67 ± 3.32 ppm), and bark zinc levels (21.08 ± 3.25 ppm) compared to other species. Pericopsis angolensis accumulated the highest amount of aluminium in the roots (0.42 ± 0.07 ppm). Copper and manganese were present in trace amounts across all species (Cu: < 6 ppm; Mn: < 3 ppm). Toxic metals (Pb, Cd, and Cr) were below the detection limits in all species, indicating a low ecological risk.
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Article Type: Research Article
EUR J SUSTAIN DEV RES, Volume 10, Issue 4, 2026, Article No: em0438
https://doi.org/10.29333/ejosdr/19262
Publication date: 01 Oct 2026
Online publication date: 16 Sep 2026
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