Analysis and Seasonal Distribution of Some Heavy Metals in Sediment of Lagos Lagoon Using Environmental Pollution Indices

Abiodun, Olushola Ayoola; Oyeleke, Peter

doi:10.9734/psij/2016/24394

Cited by 6 publications

(7 citation statements)

References 7 publications

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“…The range of values of polycyclic aromatic hydrocarbons and polychlorinated biphenyl studied confirmed large fluctuations within the period of study possibly influenced by anthropogenic activities. This study corroborated with the reports of previous authors [2][3][49][50] in South-West Nigeria that plastic waste materials litter are present in Lagos Lagoon environment. Furthermore, a potential problem associated with micropellet particles contamination is the possibility of transport of endocrine disrupting chemicals contaminants by plastic waste particles which have been established in this study to adsorb onto surface of plastic waste materials and may transfer to biota upon ingestion as reported by many authors [21,25,[51][52].…”

Section: Discussionsupporting

confidence: 92%

“…Lagos lagoon is located between longitude 3°23" and 3°53" and latitude 6°26" and 6°37"N. The lagoon empties into the Atlantic Ocean through the Lagos harbour, an important channel through the heart of Lagos. Eight (8) sampling stations were established based on solid waste characteristics of each of the sampling area as reported by past literature [2] (Fig. 1 and Table 1).…”

Section: Description Of Sampling Areamentioning

confidence: 99%

“…High influence of solid waste litters in and around the Lagos lagoon has been reported by several authors [1][2][3]. In Nigeria, plastic litter materials in coastal area are documented as one of the most common litters in Lagos lagoon [3][4].…”

Section: Introductionmentioning

confidence: 99%

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Micropellet Particles: A Vector of Hydrophobic Endocrine Disrupting Chemicals in Lagos Lagoon

Abiodun

Osuala

Otitoloju

et al. 2019

CJAST

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Introduction: The occurrence of plastic waste materials in the aquatic environment is receiving enormous attention all over the world due to its negative impacts on aquatic organisms. Micropellet litters have been found to adsorb and absorbs persistent organic endocrine disrupting chemicals (EDCs). Endocrine disrupting chemicals are recognized toxic chemicals to human and organisms. Aim: This study quantifies occurrence of micropellet particles in Lagos Lagoon and their EDCs contents. Methodology: The sampling was conducted from 2016 to 2018 at eight sampling locations with three points established in each of the sampling station. The chemical analysis of EDCs was conducted by gas chromatography coupled with electron capture detector and flame ionization detector. Results: Micropellet particles occurrence was highest in surface water (67%) compared to (33%) in sediment during the period of sampling. EDCs contents reflect contamination of PCBs and PAHs in the extracted micropellet particles. Some sampling stations contained relatively higher PAHs concentrations but very low concentration of PCBs. Conclusion: Since, micropellet particles and EDCs cannot be removed completely from the aquatic environment; reduction of impending hazards ought to rely on curtailing disposal of plastic materials and sensitizing the populace on general disposal methods in order to minimize interaction of plastic particles with EDCs which are likely to pose significant effects on aquatic fauna.

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Section: Discussionsupporting

confidence: 92%

Section: Description Of Sampling Areamentioning

confidence: 99%

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Micropellet Particles: A Vector of Hydrophobic Endocrine Disrupting Chemicals in Lagos Lagoon

Abiodun

Osuala

Otitoloju

et al. 2019

CJAST

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“…More so, recoverable As concentration was consistently higher than the TEL the in the LG. The availability of As at a location has been attributed to the unsuitable disposal of electronic waste, industrial effluents, fertilizers and atmospheric depositions as described by Talbot and Chegwidden in [45], some of which were notably observed in many of the sampled locations in the LG. In the LH, lower recoverable As concentrations were observed, and they were mostly concentrated around petroleum products' tank farms and transfer sites, indicating that spills of imported petroleum products at the ports are important contributors to its distribution in the lagoon.…”

Section: Discussionmentioning

confidence: 99%

Comparative Investigation of Total, Recoverable and Bioavailable Fractions of Sediment Metals and Metalloids in the Lagos Harbour and Lagoon System

2019

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This study investigated and characterised concentration of some selected metals and metalloids (As, Cd, Cr, Cu, Co, Fe, Mn, Ni, Pb, Sn, V and Zn) present in surface sediments of the Lagos Harbour (LH) and associated Lagos Lagoon (LG) system using a combination of metal extraction and analytical methods within 26 sampling sites including a control (Apese Lagoon, APL). Sampling was carried out using a Van-veen grab sampler on three occasions (dry seasons 2013, 2014; wet season 2013). The total, recoverable and bioavailable fractions were measured separately by X-ray fluorescence (XRF), Aqua regia (AR) extraction with inductively coupled plasma optical emission spectrometry (ICP-OES) and 1 M hydrochloric acid (1 M HCl) extraction with inductively coupled plasma mass spectrometry (ICP-MS) analysis, respectively. Results were compared with National Oceanic and Atmospheric Administration (NOAA)/Canadian Sediment Quality Guidelines (CSQG) and geochemical spatial distribution maps. Threshold effect level (TEL) were exceeded by total concentration of Cu, Zn and recoverable As across the lagoons. Bioavailable As was below TEL while Ni was associated with the ports in the LH.

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“…Heavy metal pollution index (HPI) and Metal Index (MI) had been widely deployed as an effective tool for the assessment of heavy metal risk in surface water bodies (Ameh and Akpah 2011;Goher et al, 2014, Ojekunle et al, 2016 and ground water (Kumar et al, 2012, Tiwari et al, 2016 Philips et al (2012) has identified Commodore channel as an essential part of Lagos lagoon intricate system which connects the Lagos lagoon to the Atlantic Ocean. Abiodun and Oyeleke (2016) assessment of sediment in the Lagos lagoon had observed discharge of industrial and domestic waste within the Commodore channel. To the best of the authors knowledge there is no published report on the heavy metal pollution of surface water of this area.…”

Section: Introductionmentioning

confidence: 99%

Heavy metals pollution index of surface water from Commodore channel, Lagos, Nigeria

Addey¹,

Ayoola²,

Adelopo³

et al. 2018

Afr. J. Environ. Sci. Technol.

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Surface water pollution poses a major risk to all biotic entities dependent on the water body. This study assessed the surface water quality of commodore channel, Lagos lagoon with respect to its heavy metals pollution level using indexing approach to determine the sources of heavy metal and its associated pollution risk. Samples were collected at a depth of 10-15 cm within a distance of 4 km from the shore line. Metal concentrations were evaluated using Atomic Absorption Spectrometry. The Concentrations of Pb (0.203-2.601 mg/L), Fe (0.253-1.049 mg/L), Cd (0.017-0.133 mg/L), and Co (0.000-0.226 mg/L) exceeded the recommended limits set by the World Health Organization, while Zn concentration (0.007-0.319 mg/L), was within acceptable limits for all locations investigated. Heavy metal pollution index (HPI) of the study area was found to be 3532.1, exceeding the critical pollution index value of 100. Similarly, the Metal Index (MI) of 150.5 of the study area was above threshold limit value of 1, suggesting that the area is seriously polluted with heavy metals. Sample t-test, confirms that there is a significant statistical different (with p value at p<0.05) between samples collected from the industrial areas and non-industrial area. The study revealed the sources of the heavy metals are primarily from anthropogenic source attributed to the untreated industrial discharge, and municipal solid waste disposed in the area. Prompt enforcement of environmental protection laws is needed to prevent continuous pollution of the area.

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Analysis and Seasonal Distribution of Some Heavy Metals in Sediment of Lagos Lagoon Using Environmental Pollution Indices

Cited by 6 publications

References 7 publications

Micropellet Particles: A Vector of Hydrophobic Endocrine Disrupting Chemicals in Lagos Lagoon

Micropellet Particles: A Vector of Hydrophobic Endocrine Disrupting Chemicals in Lagos Lagoon

Comparative Investigation of Total, Recoverable and Bioavailable Fractions of Sediment Metals and Metalloids in the Lagos Harbour and Lagoon System

Heavy metals pollution index of surface water from Commodore channel, Lagos, Nigeria

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