Elemental Composition of Core Sediments in Niger Delta Mangrove, Nigeria

Nwawuike, Nnawugwu; Ishiga, Hiroaki

doi:10.9734/jgeesi/2018/42913

Cited by 3 publications

(7 citation statements)

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“…This is because a decrease in the rhizosphere's pH increases metal solubility which might enhance uptake by plants [22]. In an earlier study, [8] Higher As concentration in the R. racemosa observed in this study is consistent with the findings of [23] that As is not readily transported to the aerial plant parts. Though Pb is a non essential metal, its concentration and translocation in plants are determined by salinity.…”

Section: Discussionsupporting

confidence: 90%

“…This is because a decrease in the rhizosphere's pH increases metal solubility which might enhance uptake by plants [22]. In an ear Nwawuike and Ishiga [8] reported that Choba, Ogbogoro and Isaka sediments have pH range of 5.75 -6.36, 5.84 -6.31 and 6.19 respectively. These pH ranges indicate that the study area sediments are slightly acidic.…”

Section: Discussionmentioning

confidence: 99%

“…1). These rivers drain through the areas of hydrocarbon exploration and exploitation [9], emptied into the Atlantic Ocean and equall serve as tidal inlets. The tidal amplit between 1 -3 m [10,11].…”

Section: Study Sitementioning

confidence: 99%

“…The mean concentration and standard deviations of elements and oxides in the mangrove core sediments in Choba, Ogbogoro and Isaka are presented in Table 1. For the sediment characteristics, see [8,9] 2 shows the graphical representation of the heavy metal concentration sequence in the study area.…”

Section: Concentration Of Heavy Metals In Sedimentsmentioning

confidence: 99%

“…1. Map of the study location showing sampling locations [8] Nwawuike and Ishiga; JGEESI, 17 (4): [1][2][3][4][5][6][7][8][9][10][11]2018; Article no.JGEESI. 44485 2 Mangroves; sediments; R. racemosa; heavy metals; Niger Delta.…”

Section: Introductionmentioning

confidence: 99%

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Heavy Metal Concentrations in Mangrove Sediments and R. racemosa in Niger Delta, Nigeria

Nwawuike

Ishiga

2018

JGEESI

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This study assessed the concentration of As, Pb, Zn, Cu, Ni, Cr, V, Sr, Y, Nb, Zr, Cl, TS, TiO 2 , MnO, CaO and P 2 O 5 in the mangrove sediment and R. racemosa samples from Choba, Ogbogoro and Isaka in Niger Delta, Nigeria. A total of 6 sediment and 9 R. racemosa samples were collected using the simple random sampling. Two core sediment samples of 10 cm depth and three R. racemosa leave, stem and root samples were collected from each of the sampled locations. Both the sediment and R. racemosa samples were oven dried, powdered, made into briquettes and analyzed using XRF. The results showed contrasting heavy metal concentrations in the sediments and R. racemosa. As, Pb, Cu, Ni, Y, Nb and Zr had higher concentrations in the sediments while the concentrations of Zn, Sr, Cl, TS, MnO, CaO and P 2 O 5 were more in R. racemosa tissue. However, Cr, V and TiO 2 which had relatively high concentrations in the sediments were not detected in R. racemosa. Graphical analyses revealed a correlation between concentrations in sediment and R. racemosa as well as a similar pattern of heavy metal concentrations in the R. racemosa leaves, stems and roots in Choba, Ogbogoro and Isaka. But variations were found in the leaf/stem and leaf/root upward transport relationship. Most heavy metals were found to concentrate in R. racemosa roots while the least concentrations were found in the leaves.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Study Sitementioning

confidence: 99%

Section: Concentration Of Heavy Metals In Sedimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Heavy Metal Concentrations in Mangrove Sediments and R. racemosa in Niger Delta, Nigeria

Nwawuike

Ishiga

2018

JGEESI

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Reconstructing the history of environmental impact in a tropical mangrove ecosystem: A case study from the Suape port-industrial complex, Brazil

Oliveira

Xavier

Santos

et al. 2021

Regional Studies in Marine Science

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Ecological Risk Assessment of Crude Oil Impacted Farmland Soils: A Case Study of Ohaji/Egbema in Niger Delta, Nigeria

N.,

O.U.,

C.T.

et al. 2023

African Journal of Environment and Natural Science Research

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The study assessed the impact of crude oil on farmland soils in Ohaji Egbema. Farmlands used for this study are farms that were indirectly impacted through overland flow and acid rain. A total of 42 farmland soil samples were used for this study. The farmland soil samples were collected at a depth range of 0 - 10 cm using a hand trowel through random sampling. The samples were air dried for 72 hours before laboratory analysis for arsenic (As), nickel (Ni), chromium (Cr), cadmium (Cd) and lead (Pb). The results obtained show that heavy metals in farmland soils at different locations in Ohaji/Egbema varied in both concentration and trend. The observed trends at different locations are: Cd>As>Ni>Cr>Pb for Mmahu, Abaezi, Abacheke and Awarra while for Assa and Obitti, it is Cd>Ni>As>Cr>Pb. To establish the extent the farmland soils were polluted, contamination factor (CF), degree of contamination (Cd) and geoaccumulation index (Igeo) were applied. Results of the Cf showed that Ni, Cr and Pb had low contamination, As had moderate contamination while Cd had high contamination in the farmland soils with a range of 155.15 - 206.87 and Cd of 1242.72. The Igeo for Cd ranged from 31.13 to 41.52, an indication of extreme contamination. The associated potential ecological risks were assessed using potential contamination index (PCI), ecological risk factor (Eri) and ecological risk index (RI). It was found that Cd had PCI ranging from 155.22 - 198.51, Eri range of 4654.44 - 6206.11 and RI of 37311.56. This indicates that the farmland soils of Ohaji/Egbema are highly contaminated with Cd and exposed to severe ecological risk.

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Elemental Composition of Core Sediments in Niger Delta Mangrove, Nigeria

Cited by 3 publications

References 0 publications

Heavy Metal Concentrations in Mangrove Sediments and R. racemosa in Niger Delta, Nigeria

Heavy Metal Concentrations in Mangrove Sediments and R. racemosa in Niger Delta, Nigeria

Reconstructing the history of environmental impact in a tropical mangrove ecosystem: A case study from the Suape port-industrial complex, Brazil

Ecological Risk Assessment of Crude Oil Impacted Farmland Soils: A Case Study of Ohaji/Egbema in Niger Delta, Nigeria

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