Soil Risk Assessment in the Surrounding Area of Hulene-B Waste Dump, Maputo (Mozambique)

Soil contamination in areas close to unplanned dumpsites represents an increasing risk to the ecosystems and human health. This study aimed to evaluate soil quality in the area surrounding the Hulene-B waste dump, Maputo, Mozambique, and to estimate potential ecological and human health risks. A tot...

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Main Authors: Bernardino Bernardo, Carla Candeias, Fernando Rocha
Format: Article
Language:English
Published: MDPI AG 2022-07-01
Series:Geosciences
Subjects:
Online Access:https://www.mdpi.com/2076-3263/12/8/290
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author Bernardino Bernardo
Carla Candeias
Fernando Rocha
author_facet Bernardino Bernardo
Carla Candeias
Fernando Rocha
author_sort Bernardino Bernardo
collection DOAJ
description Soil contamination in areas close to unplanned dumpsites represents an increasing risk to the ecosystems and human health. This study aimed to evaluate soil quality in the area surrounding the Hulene-B waste dump, Maputo, Mozambique, and to estimate potential ecological and human health risks. A total of 71 surface soil samples were collected in the surrounding area of the dump, along with 10 samples in areas considered not impacted by the dump. Chemical and mineralogical analyses were performed using XRF and XRD. Quartz was the most abundant mineral phase, followed by feldspars, carbonates, clay minerals, and Fe oxides/hydroxides. Results showed a significant contribution to ecological degradation by PTE enrichment, ranked as Zn >> Cu > Cr > Zr > Pb > Ni > Mn. Carcinogenic risk for both children and adults was significant due to Pb soil content. Soil sample concentrations of Cr, Cu, Mn, Ni, Pb, Zn, and Zr, posing a risk especially in children, suggested the need for continuous monitoring, as well as the definition and implementation of mitigation measures.
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spelling doaj.art-6f45e09b4c5b45b0b41668473b347c8e2023-12-03T13:43:35ZengMDPI AGGeosciences2076-32632022-07-0112829010.3390/geosciences12080290Soil Risk Assessment in the Surrounding Area of Hulene-B Waste Dump, Maputo (Mozambique)Bernardino Bernardo0Carla Candeias1Fernando Rocha2GeoBioTec Research Centre, Department of Geosciences, University of Aveiro, 3810-193 Aveiro, PortugalGeoBioTec Research Centre, Department of Geosciences, University of Aveiro, 3810-193 Aveiro, PortugalGeoBioTec Research Centre, Department of Geosciences, University of Aveiro, 3810-193 Aveiro, PortugalSoil contamination in areas close to unplanned dumpsites represents an increasing risk to the ecosystems and human health. This study aimed to evaluate soil quality in the area surrounding the Hulene-B waste dump, Maputo, Mozambique, and to estimate potential ecological and human health risks. A total of 71 surface soil samples were collected in the surrounding area of the dump, along with 10 samples in areas considered not impacted by the dump. Chemical and mineralogical analyses were performed using XRF and XRD. Quartz was the most abundant mineral phase, followed by feldspars, carbonates, clay minerals, and Fe oxides/hydroxides. Results showed a significant contribution to ecological degradation by PTE enrichment, ranked as Zn >> Cu > Cr > Zr > Pb > Ni > Mn. Carcinogenic risk for both children and adults was significant due to Pb soil content. Soil sample concentrations of Cr, Cu, Mn, Ni, Pb, Zn, and Zr, posing a risk especially in children, suggested the need for continuous monitoring, as well as the definition and implementation of mitigation measures.https://www.mdpi.com/2076-3263/12/8/290soilswaste dumppotential toxic elementsrisk assessment
spellingShingle Bernardino Bernardo
Carla Candeias
Fernando Rocha
Soil Risk Assessment in the Surrounding Area of Hulene-B Waste Dump, Maputo (Mozambique)
Geosciences
soils
waste dump
potential toxic elements
risk assessment
title Soil Risk Assessment in the Surrounding Area of Hulene-B Waste Dump, Maputo (Mozambique)
title_full Soil Risk Assessment in the Surrounding Area of Hulene-B Waste Dump, Maputo (Mozambique)
title_fullStr Soil Risk Assessment in the Surrounding Area of Hulene-B Waste Dump, Maputo (Mozambique)
title_full_unstemmed Soil Risk Assessment in the Surrounding Area of Hulene-B Waste Dump, Maputo (Mozambique)
title_short Soil Risk Assessment in the Surrounding Area of Hulene-B Waste Dump, Maputo (Mozambique)
title_sort soil risk assessment in the surrounding area of hulene b waste dump maputo mozambique
topic soils
waste dump
potential toxic elements
risk assessment
url https://www.mdpi.com/2076-3263/12/8/290
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