Dust pollution and its potential health risk exposure to inhabitants of Covenant University and canaanland, Ogun state, Nigeria

Maxwell, Omeje; Olusegun, O. Adewoyin; Sociis, T.A. Okolie; Samuel, Sam-Inyang; Arijaje, T. E.; Akinpelu, A.

doi:10.1088/1755-1315/173/1/012020

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…Among the four (4) heavy metals considered, the degree of pollution caused by Ni and Cr during these two seasons changed significantly, but those of Pb and Zn did not change. It was also observed that the deeper subsurface lithofacies in this area of study contain high concentrations of the heavy metals 38,39 . The degree of pollution in these different lithofacies, increased from layer 1 up to layer 5.…”

Section: Geo-accumulation Index Resultsmentioning

confidence: 60%

Toxicology of Heavy Metals to Subsurface Lithofacies and Drillers during Drilling of Hydrocarbon Wells

Okoro

Okolie

Sanni

et al. 2020

Sci Rep

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This study investigates the toxicological effects of heavy metals on lithofacies of the subsurface in a drilled hydrocarbon well as well as, to the drilling crew and people in an environment. the pollution levels of selected heavy metals were considered alongside their ecological effects during dry and wet seasons. the health hazard potential of human exposures to the metals, were estimated in terms of intensity and time using the USepA recommended model. the heavy metal concentration for each layer decreased across the lithofacies as follows; Layer 5> Layer 4> Layer 3> Layer 2> Layer 1. the average concentrations of the heavy metals present in the samples obtained from the formation zone, varied significantly and decreased in the order of Al> Zn> ni> pb> cr> cu> cd> As> Hg. the highest concentration of Al, cu, and Zn in this present study were within the maximum allowable limits whereas, those of As, cd, Hg and ni were all above their maximum allowable limits. Among the transition metals analysed, the maximum mean daily dose of Pb (9.18 × 10 −6 mg/kg/d) and cr (1.42 × 10 −6 mg/kg/d) were confirmed susceptible to human carcinogens and environmental toxins. the estimated hazard quotient shows that the dermal pathway is the most likely route via which the drilling crew and people in the environment can get contaminated. the cancer risk values for the pb (7.72 × 10 −4), Cd (1.35 × 10 −1), Ni (9.97 × 10 −3), As (1.50 × 10 −1) and Cr (3.16 × 10 −3) are all above the acceptable values. the cancer risk contribution for each metal was in the order of As> cd> ni> cr> pb. Layer 5 had the maximum Geo-accumulation index for the heavy metals considered. This higher Geoaccumulation index noted at the depth in Layer 5 may be attributed to the effect of water basin with turbidity currents, deltas, and shallow marine sediment deposits with storm impacted conditions. Also, the pollution from lead (pb) in the dry season was maximum with an i geo value> 5 for all the lithofacies considered because of the low background concentration of the metal. During the wet season, the heavy metal pollution rate was moderate for Zn whereas, it was extremely polluted with respect to pb. The ecological risk potential of Pb shows that the associated ecological risks range from 536-664 in the wet season (i.e. extremely strong) and 2810-3480 in dry season (extremely strong). The high level of Pb pollution found in the area at such shallow depth may be due to the sedimentary folds possibly caused by the full spectrum of metamorphic rocks and primary flow structures at shallow depths. This was used to identify the environmental sensitivities of the heavy metals during the dry and wet seasons.

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Section: Geo-accumulation Index Resultsmentioning

confidence: 60%

Toxicology of Heavy Metals to Subsurface Lithofacies and Drillers during Drilling of Hydrocarbon Wells

Okoro

Okolie

Sanni

et al. 2020

Sci Rep

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The impacts of building opening characteristics on dust particle deposition indoors

Mohammed

Bulama

Bukar

et al. 2023

IJBPA

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PurposeThe effects of dust exposure in buildings and its health and comfort consequences continue to concern occupants, particularly those who spend most of their time indoors. This study examines the influence of building opening characteristics on surface dust loading in indoor environments to determine the dust particles' impact on different opening configurations.Design/methodology/approachIndoor Harmattan dust surface loading data were collected from Maiduguri, Northeastern Nigeria, using model rooms with six different window configurations. A simple mathematical relationship was employed to assess surface dust loading characteristics in the model rooms. The study measured dust thrice between December and February for three days (72 h). The results were analyzed using descriptive statistics.FindingsThe results determined the highest average surface dust loading of 12.03 g/m2 in the room with awning windows at an indoor-to-outdoor (I/O) ratio of 0.7. In contrast, the experiment in the room with a closed window recorded the lowest average surface dust loading of 5.24 g/m2 at an I/O ratio of 0.30, which is infiltration. The outcomes further indicate that the average surface dust loading varies with the building opening type and position, as higher surface dust loadings were recorded in locations closer to the openings (doors and windows), reaffirming that the dominant source of the dust particles is outdoors. According to the study, dust incursion due to infiltration accounts for 30% of the outdoor surface loading.Originality/valueThus, Harmattan dust is a serious challenge to the health, productivity and hygiene of building occupants in the study area. The built-environment professionals must use the study's outcome to optimize building openings' designs (shape, size and form) for effective indoor dust control.

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Dust pollution and its potential health risk exposure to inhabitants of Covenant University and canaanland, Ogun state, Nigeria

Abstract: Abstract. Understanding the background concentration of heavy metals in dust samples is so much important for identifying and managing pollution. Thus, these concentrations in dust can be distributed indoors and outdoors in order of magnitudes.

Cited by 2 publications

References 7 publications

Toxicology of Heavy Metals to Subsurface Lithofacies and Drillers during Drilling of Hydrocarbon Wells

Toxicology of Heavy Metals to Subsurface Lithofacies and Drillers during Drilling of Hydrocarbon Wells

The impacts of building opening characteristics on dust particle deposition indoors

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