Spatial characteristics, sources and exposure risk of polychlorinated biphenyls in dusts and soils from an urban environment in the Niger Delta of Nigeria

Ossai, Chinedu J; Iwegbue, Chukwujindu M. A.; Tesi, Godswill O.; Olisah, Chijioke; Egobueze, Francis E.; Nwajei, Godwin E.; Martincigh, Bice S.

doi:10.1016/j.scitotenv.2023.163513

Cited by 9 publications

(2 citation statements)

References 82 publications

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“…pH is commonly used to express the concentration of the acidity or alkalinity of a solution. Studies conducted in some rivers in Nigeria have reported a similar pH value [2,[37][38][39]. Generally, the low pH of water bodies could be attributed to the presence of humic acids generated by the demise of aquatic life due to human activities [6,40,41].…”

Section: Physicochemical Properties Of the Water Samplesmentioning

confidence: 96%

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Evaluation of selected physicochemical properties of River Otamiri, Imo State

Eze,

Onwukeme,

Ogbuagu

et al. 2024

Health Environ.

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Surface water monitoring is essential, especially when the water is normally used for industrial, agricultural, and domestic purposes. The study determined the physicochemical properties of the River Otamiri using the American Public Health Association standard methods for water analysis. In this study, river water samples were collected five times during the dry season from four sampling points (WSP-1, WSP-2, WSP-3 and WSP-4) along the watercourse of the river in Owerri West Local Government Area of Imo State. The levels of the selected physicochemical parameters were compared with the National Standard for Drinking Water Quality (NSDWQ) guidelines. The findings showed that the pH (4.99±0.11 – 6.30±0.08), dissolved oxygen (4.16±0.01 – 6.45±0.03), total hardness (17.10±1.78 – 27.80±2.54), chloride (68.30±0.58 – 91.90±0.64), and sulphate (39.55±3.32 – 51.21±2.11) were below the acceptable limit of the National Standard for Drinking Water Quality (NSDWQ). However, electrical conductivity (1116±29.75 – 1419±28.54), turbidity (18.90±2.81 – 31.70±8.13) and nitrate (45.50±3.06 – 69.90±2.11, except in water sample point-4) were above the recommended limit according to the NSDWQ guideline, while temperature levels (26.90±0.04 – 28.40±0.02) were within the acceptable limit. The study concludes that the River Otamiri is contaminated. It is therefore advisable to purify water from the river before use for domestic and industrial purposes.

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Section: Physicochemical Properties Of the Water Samplesmentioning

confidence: 96%

“…The high E.C values were attributed to the impact of dissolved ions in the surface water. The electrical conductivity of river water is a very important parameter, as it is used to measure the soluble salt content of the water [39,42].…”

Section: Physicochemical Properties Of the Water Samplesmentioning

confidence: 99%

Evaluation of selected physicochemical properties of River Otamiri, Imo State

Eze,

Onwukeme,

Ogbuagu

et al. 2024

Health Environ.

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Assessment of the Pollution Levels, Sources, and Exposure Risks of Polychlorinated Biphenyls (PCBs) in Urban Park Dusts within Lagos Metropolis

Adeniran,

Odediran,

Ogunlade

et al. 2024

Environmental Quality Mgmt

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Polychlorinated Biphenyls (PCBs) represent organic contaminants that are persistent hazardous, carcinogenic, and genotoxic, thereby endangering both human well‐being and the ecosystem. This research delved into concentration patterns, sources, and health hazards associated with PCBs in dust collected from vehicle parks in Lagos metropolis. PCBs in samples of Lagos park dust extended from 1.00 to 36.80 ng/g, with PCB 18 exhibiting the highest mean concentration of 17.02 ng/g. Among the 12 PCBs studied, 5 Cl atom PCBs contributed the highest percentage, constituting 30% of the total PCB content in Lagos park dust. Dioxin‐like PCBs (DLPCBs) made up 27% of the overall PCBs composition in the dust. Using the positive matrix factorization method, eight sources of PCBs were identified, with biomass combustion contributing the highest proportion at 42% of the total PCB emissions. Health risk estimates revealed that the magnitude of PCBs exposure in human followed the order: ingestion > dermal contact > inhalation. PCBs exposure through ingestion in children was 9.33 times higher than that of adults, potentially attributed to the inadvertent intake of dust particles by children via hand‐to‐mouth contact. Cancer risk assessments for all PCB congeners remained below 10−6, indicating acceptable risk levels. PCB 18 had the highest cancer risk values, reaching 8.69 × 10−9 for children and 1.19 × 10−9 for adults.

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Mutagenic Properties of Urban Road Dust: Different Approaches Using Bioindicators

Rybak,

Mudiyanselage

2024

Interdisciplinary Cancer Research

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Spatial characteristics, sources and exposure risk of polychlorinated biphenyls in dusts and soils from an urban environment in the Niger Delta of Nigeria

Cited by 9 publications

References 82 publications

Evaluation of selected physicochemical properties of River Otamiri, Imo State

Evaluation of selected physicochemical properties of River Otamiri, Imo State

Assessment of the Pollution Levels, Sources, and Exposure Risks of Polychlorinated Biphenyls (PCBs) in Urban Park Dusts within Lagos Metropolis

Mutagenic Properties of Urban Road Dust: Different Approaches Using Bioindicators

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