Distribution and Potential Mobility Assessment of Some Hazardous Metals in Soil of Mechanic Workshops: A Case Study of Akoko Land in Nigeria

Ololade, Isaac Ayodele; Oloye, Femi Francis; Adamu, Haruna; Oluwole, Oluyinka David; Oluyede, Oluwabunmi Peace; Alomaja, Folasade; Ololade, Oluwaranti Olubunmi

doi:10.9734/irjpac/2015/16340

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…al., 2001. In order to overcome this problem, and to gain insight into fate and mobility of As in the tested soil samples, the approach described by Zein and Brummer, Wenzel et al, and adopted by Ololade et al, was adopted in accordance with Table 2; and levels of Arsenic in the fractions were analysed using the same AAS as described elsewhere (Ololade et al, 2014).…”

Section: Methodsmentioning

confidence: 99%

“…To obtain composite samples of each site, a bulking method was employed to harmonize the samples. A conning and quartering method was applied repeatedly to reduce the sample volume for each site (Ololade et al, 2014;Jackson, 1958). Each representative site sample was prepared by mixing one sample with the other replicates from different grids of the same site to overcome spatial variability.…”

Section: Samplingmentioning

confidence: 99%

“…In many countries, the current standards for metal evaluation/contamination are based on the total concentrations of metals obtained using strong acid digestion solutions such as nitric acid or aqua regia (Gupta et al, 1996;Ololade et al, 2014). However, mobility of metals in soils, and their toxicity to the biosphere, is related to their association with various soil constituents rather than total concentrations (Sadiq, 1997) Important factors affecting As chemistry, and its mobility in soils, are soil solution chemistry (pH and redox conditions), solid composition, As bearing phases of adsorption and desorption, biological transformation, volatilization and cycling of As in soil (Baroni et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Fate and Potential Mobility of Arsenic (As) in the Soil of Mechanic Workshops

Oloye¹,

Ololade²,

Oluwole³

et al. 2014

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In order to determine Arsenic (As) content in soils, from the vicinity of an automobile mechanic's workshop and to evaluate the contamination levels, different soil layers (0-15cm, 15-30cm and 30-45cm depth) were collected and analyzed for As content using atomic absorption spectrophotometer (AAS). Soil texture, conductivity, pH, total organic content and cation exchange capacity were also measured. Sequential extraction was carried out to determine geochemical phases of As. In the investigated soil samples, the mean total As concentrations were 2.45-2.53, 2.14-2.26 and 2.69-2.79 mg/kg for 0-15 cm, 15-30 cm and 30-45 cm depth respectively. Generally the affinity of As with the soil fraction increases in the order F3 < F6 < F1 < F2 < F5 < F4 < F7. The levels found in this study exceeded the background concentrations and safe limits for agricultural and residential purposes. The reported results indicate that the enrichment factors (EF) of As was 3.55-3.66, 4.04-4.26 and 3.49-3.62 mg/kg for top, middle and inner soils respectively; while the geoaccumulation index (Igeo) values of the metals in the soils studied indicate that they are uncontaminated to slightly contaminated with As. The results indicate that waste from auto-mechanic workshops represent a potential source of heavy metal pollution to the surrounding environment.

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Section: Methodsmentioning

confidence: 99%

Section: Samplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fate and Potential Mobility of Arsenic (As) in the Soil of Mechanic Workshops

Oloye¹,

Ololade²,

Oluwole³

et al. 2014

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“…Skin diseases and other respiratory problems have also been reported in quarry workers (Ugbogu et al, 2009;Ololade et al, 2015). For example NISA (1997) and Safrudin et al (2014) stated that inhaled limestone dust can increase the level of IL-8 serum of limestone mining workers after work.…”

Section: Introductionmentioning

confidence: 95%

“…Quarrying activities also bring many adverse effects to ecosystems (Evans, 1989;NISA, 1997;Madhaven and Sanjay, 2005;Effiong and Gilbert, 2012;Abah et al, 2014) and to the health of human beings (Ugbogu et al, 2009;Morton et al, 2010;Ololade et al, 2015). For example, dust from quarrying affects the growth and flowering of crops because it settles down on the leave's surface and affects photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Geochemical assessment of toxic metals stocking in top-soil within the area of limestone quarry in Gombe of North-eastern Nigeria

Usman¹,

Kumar²,

Abdulkadir³

et al. 2016

Afr. J. Environ. Sci. Technol.

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(North-eastern Nigeria) were collected to analyse levels of hazardous substances such as of Hg, Fe, Zn, Ni, Mn, Cu, Cr, Cd and Pb. A total of 24 topsoil samples were collected around the radius of 0.5 km from the blasting arena. Additionally, six background samples were also collected from an unexploited reserved area that was ~6 km far from the main sampling location. Two rocks of limestone samples from blasting area were also collected and analysed for heavy metals as a reference. All the samples were processed and extracted with nitrate acid solution and analysed using smart spectrophotometer methods. The results suggested varying organic contents in soil, sand, silt, clay and pH. All these parameters are correlated with those of unexploited samples. Limestone rocks samples displayed a high concentration of Fe and Mn improvement. Toxic metals concentrations (mg/kg) in top-soil with background levels were discovered in Hg, Fe, Mn, Ni, Zn, Cd, Cu, Cr and Pb. Residual phases exhibited the lowest enrichment for most metals possibly, because of high loamy sand content. The situated enrichment advocates influence from mining activities. The results especially geoaccumulation index assessment exhibit below detected limit to 0.20 mg/kg for Pb which is uncontaminated by Lead when compared with the USA threshold limit of particulate metal concentration. Conversely, the other hazardous metals ranged from 1 to 2, indicating the area is contaminated moderately. The exposure to dust containing high silica in quarry workers leads to deterioration of pulmonary function and hence suggesting a need for protective measures of the quarry workers.

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