Geochemical and Statistical Approach to Assessing Trace Metal Accumulations in Lagos Lagoon Sediments, South Western, Nigeria

Olatunde, Popoola Samuel; Philiphs, Ibitola; Juliano, Appia Youpele; Imhansoeleva, Titocan

doi:10.9734/jgeesi/2015/20333

Cited by 6 publications

(4 citation statements)

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“…The categorization of contamination factor is classified as: CF < 0: Not contaminated; 0 < CF < 1: Low contamination; 1 < CF < 3: Moderate contamination; 3 < CF < 6: Considerable contamination; 6 < CF < 9: High contamination; and 9 < CF < 12: Very strong contamination. The categorization was adopted from Olatunde et al, (2015).…”

Section: Geochemical Indicesmentioning

confidence: 99%

Studies of Contaminant Factors of Heavy Metals Content in Subsistence Farmlands at Akinyele Local Area in Oyo State, Southwestern Nigeria Using Geochemical Indices

Talabi

Odunaike

Ajiboye³

2023

IJSEI

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The consumption of heavy metals through the ingestion of food is a growing concern in developing countries where monitoring of the environmental content of heavy metals has not been given the desired attention. This research work aims at determining the public health risks and safety of farm products in terms of their residual heavy metal burdens from five subsistence farmlands in the Akinyele area. Analysis of concentrations of Cd, Cu, Cr, Pb, Fe, and Zn in soil samples from the study area was conducted using a flame atomic absorption spectrophotometer. The pH of the samples was measured in situ using pH meter while soil organic matter was determined using the loss of ignition method. Geochemical indices were used to determine the concentration trend of heavy metals in the soil samples. Correlation analysis was performed to establish the relationship between the metals. The concentrations of all the heavy metals were below the maximum permissible limit stated by WHO/FAO. The soil pH ranged from 7.36 to 8.38 indicating that the study area is slightly alkaline. The soil organic matter content ranged from 1.637% to 2.1% indicating that the soil from the study area are mineral soils. Geochemical indices revealed that all the sampling sites were uncontaminated except Site A, B, and E with moderate contamination of Cd. Correlation studies between the analyzed variables revealed the common origin of all metals. The study area can be recommended for farming purposes. However, more farmlands should be tested to determine their residual heavy metal concentrations.

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Section: Geochemical Indicesmentioning

confidence: 99%

Studies of Contaminant Factors of Heavy Metals Content in Subsistence Farmlands at Akinyele Local Area in Oyo State, Southwestern Nigeria Using Geochemical Indices

Talabi

Odunaike

Ajiboye³

2023

IJSEI

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“…El comportamiento de los elementos trazas en los sistemas acuáticos de un entorno costero típico requiere una atención importante debido a la alteración antropogénica global de los ciclos de los elementos (Olatunde et al, 2015). En los ecosistemas acuáticos naturales los elementos trazas presentan bajas concentraciones; sin embargo, los altos niveles de contaminación de los elementos trazas se han convertido en un problema de creciente preocupación debido a su toxicidad y su acumulación en el hábitat acuático (Hasan et al, 2013;Chen et al, 2020;Shirani et al, 2020).…”

Section: Introductionunclassified

“…The behavior of trace elements in the aquatic systems of a typical coastal environments requires special attention, given the global anthropogenic alteration of the trace element cycles (Olatunde et al, 2015). In natural aquatic systems, trace elements exhibit low concentrations.…”

Section: Introductionmentioning

confidence: 99%

Contaminación por elementos trazas en sedimentos superficiales marinos de la bahía del Callao, Perú

Rosas,

Alvariño,

Guabloche

et al. 2023

Bol. Investig. Mar. Costeras

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En este estudio se evaluó la contaminación por elementos trazas en el sedimento superficial de la bahía del Callao, Perú. Se analizaron 28 elementos trazas en sedimentos marinos superficiales, provenientes de cuatro estaciones por cada temporada (otoño, invierno, primavera y verano), durante el período 2015-2016, a través de espectrofotometría de absorción atómica con plasma acoplado inductivamente (ICP-MS). Se utilizaron índices para determinar el grado de contaminación del sedimento. El As, Cd, Cu, Hg, Pb y Zn podrían estar asociados a efectos tóxicos sobre la biota del sedimento marino superficial con base en una evaluación de riesgo ecológico. Los valores de EF (factor de enriquecimiento) indicaron un enriquecimiento extremadamente alto por las medias anuales de As, Cd, Ag y Pb, mientras que los de CF (factores de contaminación) indicaron alta contaminación. Además, se determinó que el sedimento marino superficial de la bahía del Callao se encuentra altamente contaminado, debido principalmente a As, Cd y Pb: mCd (índice de riesgo ecológico potencial), PIAvg (promedio de índice de contaminación) y PInemerow (índice de contaminación de Nemerow).

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“…5 No. 1 (2021), 159-173 161 dredging and thermal pollution (Ajani et al [1], Popoola et al [11,12], Olaniyi and Popoola [9], Ajani et al [2]). The Lagos Harbour, within the commodore channel, has witnessed series of ocean forcing of tides and waves, and the accompanying high salinity values and electrical conductivity based on sea water incursion and proximity to the sea (Olaniyi and Popoola [9], Ajani et al [2]).…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variation on the Hydrochemistry and Height of Brackish-Water from Commodore Channel, Lagos, Nigeria

Popoola¹,

Unyimadu²,

Nubi³

et al. 2020

EJCS

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The current study deals with the evaluation of physicochemical characteristics, nutrient status, and variation in the height of surface water from the commodore channel, and its comparison with the hydrochemical characteristics of the monitoring borehole from the NIOMR Jetty, Lagos, Nigeria. We aim to further improve our understanding of the interrelationship of climate change and hydrological cycle, and its impacts in the Lagos coastal environments. The observed ranges of physicochemical characteristics of the surface water are dissolved oxygen (DO) 3.07-6.05mg/L; pH: 7.99-8.48; temperature 26.97-30.34°C, electrical conductivity (EC) 9680-47800mS/cm; salinity (Sal) 6.51-28.05‰ and water level 1.24-1.79m. The concentration of nutrient range from nitrite 10-36mg/l, nitrate 28-44mg/l, sulphate 38-90mg/l and phosphate 2-78mg/l. The analyzed hydrochemical characteristics from all the stations are within the desired values for healthy marine ecosystems when compared with Federal Ministry of Environment (FMENV) Nigeria permissible limits which are: DO >5 mg/l, pH 6.5-9, temperature <40°C, nitrite 1mg/l, nitrate 20mg/l, phosphate 5mg/l and sulphate 500mg/l; except low DO (<4.5mg/l) in January, November and December, and elevated nitrite, nitrate and phosphate values across the season. The low DO values may be attributed to enhanced transportation of non-biodegradable organic loads that utilize the available DO for chemical oxidation and microbial decomposition. While the enriched nitrite, nitrate and phosphate concentrations suggest enhanced productivity and influx of nutrients rich flood water from the anthropogenic source. Our study showed a coincidence in the highest brackish water height of the surface water (1.24m) from the commodore channel with the highest groundwater level (1.58m) in October. The lowest height of water levels was recorded in February and March at 2.23m and 1.79m for groundwater and surface water respectively. The similarities in the height of water levels were recorded with contrasting hydrochemical variables (e.g., high Ec vs. low Ec; and high Sal vs. low Sal), which confirmed the effect of rainfall/freshwater incursion on the surface water and simultaneous occurrence of subsurface pollution arising from seawater intrusion on the groundwater samples in October. This study had shown that a long term monitoring of rise in water levels and hydrochemical variables of surface and groundwater can be used to understand climate change and early warning predictions of flooding in coastal environments.

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Geochemical and Statistical Approach to Assessing Trace Metal Accumulations in Lagos Lagoon Sediments, South Western, Nigeria

Cited by 6 publications

References 0 publications

Studies of Contaminant Factors of Heavy Metals Content in Subsistence Farmlands at Akinyele Local Area in Oyo State, Southwestern Nigeria Using Geochemical Indices

Studies of Contaminant Factors of Heavy Metals Content in Subsistence Farmlands at Akinyele Local Area in Oyo State, Southwestern Nigeria Using Geochemical Indices

Contaminación por elementos trazas en sedimentos superficiales marinos de la bahía del Callao, Perú

Seasonal Variation on the Hydrochemistry and Height of Brackish-Water from Commodore Channel, Lagos, Nigeria

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