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. 2024 Nov 4;196(12):1158.
doi: 10.1007/s10661-024-13320-8.

Source identification and human health risk to polychlorinated biphenyls in public parks and playground surface soils, southern zone of Ghana

Samuel Kofi Frimpong  1 , Gustav Gbeddy  2   3 , Samuel Dampare  4   5 , Mark Kwasi Sarfo  5 , Eva Tabua Gyamfi  5 , Kofi Okyere Akyea-Larbi  6 , Eric Tetteh Glover  4   6
Affiliations

Source identification and human health risk to polychlorinated biphenyls in public parks and playground surface soils, southern zone of Ghana

Samuel Kofi Frimpong et al. Environ Monit Assess. .

Abstract

Polychlorinated biphenyls (PCBs) constitute a typical example of persistent organic pollutants (POPs) that have been detected globally in most environmental media. Soil serves as a critical reservoir for PCBs. This research is aimed at evaluating the potential exposure and associated health risks posed by soil-laden PCBs to humans during outdoor activities on public playgrounds and parks within the southern zone of Ghana where limited studies have been undertaken. Surface soils collected from 56 sites were processed and analyzed for seven indicator PCBs in soil particle sizes less than 63 µm. A multi-residual analytical approach for the simultaneous analysis of PCBs and polycyclic aromatic hydrocarbons (PAHs) via gas chromatography tandem mass spectrometry was utilized. The results indicated that the concentration of PCBs ranged from 0.26 to 24.00 µg/kg with an average total concentration of 1.86 ± 3.23 µg/kg which is below the environment guideline threshold of 1.3 mg/kg stipulated by the Canadian Council of Ministers for residential playgrounds/parkland soils. Multivariate analysis showed that the sources of the PCBs could be attributed predominantly to historical release, atmospheric transfer, and deposition. The excess lifetime cancer risks posed to children and adults are less than 10-6 thereby implying the existence of low carcinogenic health risk to the human populace within the southern zone of Ghana. Thus, the conduct of outdoor activities at the public playgrounds/parks within these highly populated areas poses no significant risk to human health.

Keywords: Health risk; Metropolitan; PCBs; Parks; Spectrometry; Surface soil.

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