Surface water characteristics and trace metals level of the Bonny/New Calabar River Estuary, Niger Delta, Nigeria

Onojake, M. C.; Sikoki, F.D.; Omokheyeke, O.; Akpiri, Rachael Ununuma

doi:10.1007/s13201-015-0306-y

Cited by 36 publications

(28 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Physicochemical parameters of estuary waters from Lagos lagoon in an earlier study showed agreeable temperature (27.00-33.00°C), conductivity (20.00-280.00 s/cm), ammonia nitrogen (0.73-2.53 mg/L), turbidity (9.00-121 NTU) and dissolved oxygen level (2.0 -7.40) to our findings [29]. In a recent study by Onojake et al [30], surface water physicochemical parameters of pH, temperature, DO, BOD, turbidity and heavy metals of Bonny/New Calabar River Estuary were very agreeable to our findings apart from conductivity that was higher than our findings.…”

Section: Discussionsupporting

confidence: 87%

Microbiological Examination and Physicochemical Analysis of Estuary Water Used as a Point of Source Drinking Water

Edet

Antai

Brooks

et al. 2018

IJPR

View full text Add to dashboard Cite

Introduction: Access to potable water is a fundamental human right. However, this is hardly the case in the rural areas of oil producing communities of the Niger Delta. Aim of Study: The primary aim of this study was therefore to evaluate the physicochemical and microbiological qualities of estuary water used as potable water. Method: Estuary water samples were collected from Eastern Obolo community in Akwa Ibom State, Niger Delta, Nigeria and analysed for physiochemical using standard techniques, and microbiological parameters using standard cultural and metagenomics techniques. Replicate data from microbiological and physicochemical analyses were analyzed using analysis of variance (ANOVA) while bioinformatic analyses were done using Vecton NTI suite 9 (InforMax, Inc.), NCBI-BLAST-2.2.24 and CLC bio Genomics workbench v7.5.1. IJPR, 1(1): 1-13, 2018; Article no.IJPR.41432 2 Results: Physicochemical analysis showed that the levels of metals such as chromium, nickel, zinc and iron and as well as turbidity were significantly higher than acceptable standards. Bacterial counts ranged from 0.64 to 1.00 (x 10 5 ) cfu/ml. Fungal counts ranged from 2.00 to 4.00 (x 10 2 ) cfu/ml. Esherichia coli, Citrobacter, Bacillus, Micrococcus, Pseudomonas and Flavobacterium, Shigella, Salmonella and Vibrio species were isolated using cultural means. Total coliforms counts were higher in location E6 which was closest to the community. Metagenomics analysis gave a total of six kingdoms namely bacteria, unknown, protozoa, archae, plantae and fungi in decreasing order of read counts. Furthermore, it revealed a total of 16 phyla, 24 classes, 38 orders, 39 families and 209 species of bacteria. Some pathogens not captured by cultural means such as Clostridium species, Vibrio alginolyticus, Vibrio neresis, Staphylococcus kloosii, Corynebacterium diptheriae, and uncultured species such as uncultured Helicobacter were all captured by metagenomics. Conclusion: Although, cultural methods used in this study were able to capture water borne disease pathogens, metagenomics captured much more kingdoms and species. Where possible, both techniques should be used in the microbiological examination of water samples. Original Research Article

show abstract

Section: Discussionsupporting

confidence: 87%

Microbiological Examination and Physicochemical Analysis of Estuary Water Used as a Point of Source Drinking Water

Edet

Antai

Brooks

et al. 2018

IJPR

View full text Add to dashboard Cite

show abstract

“…The coastal areas of Nigeria particularly the Niger Delta Basin, have suffered debilitating environmental degradation and pollution from human activities, manufacturing, and municipal discharges. Urbanization and municipal activities have contributed to the amount of wastes stream generated which results of the contamination in our environment [1,2]. Groundwater and surface water quality index monitoring has become a subject of concern in marine, land, and river water due to an uncontrolled disposal of municipal wastes and industrial effluent into the surrounding [3].…”

Section: Introductionmentioning

confidence: 99%

Investigation of borehole water contaminant profile at igwuruta solid waste dumpsite, Rivers State, Nigeria

Ugbebor

Ntesat

2019

Nig. J. Tech.

View full text Add to dashboard Cite

This study investigated the boreholes contamination profile at Igwuruta solid waste dumpsite. Physicochemical parameters of the water quality of selected boreholes at various distances were examined, and the results indicated that borehole A, B and C had Total Coliform Bacteria (TCB) of 140.0 cfu/100ml, 120.0 cfu/100ml and 0 cfu/100ml respectively. Total Heterotrophic Bacteria (THB) threshold of A, B and C indicated 6.0x10 3 cfu/ml, 4.8x10 3 cfu/ml and 42cfu/ml respectively. The water quality index (WQI) of boreholes A, B and C also indicated 560.82, 475 and 2.6, respectively. The result of borehole C water quality indicated it was excellent and potable for drinking. The WQI obtainable at A and B indicated polluted boreholes due to possible leachate infiltration into the groundwater and proximity of these boreholes to the dumpsite. The study recommended the adoption of solid waste re-use, recycling, and sanitary landfill waste management approach as best practice.

show abstract

“…At the UK site we sampled in the present study, levels of Cd, Cr, and Ni were <1 mg/L as assessed by ICP-MS in both the seawater and sponge tissue. However, levels of Cd, Cr, and Ni as high as 0.2, 2.9, and 0.4 mg/L, respectively, have been reported in the Niger River delta marine environment [41,42]. A future objective of our group is to investigate the effects of these high levels of pollutants on native marine sponges from this highly polluted environment.…”

Section: Discussionmentioning

confidence: 99%

Development of cultures of the marine sponge Hymeniacidon perleve for genotoxicity assessment using the alkaline comet assay

Akpiri

Konya

Hodges

2017

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Sponges are a potential alternative model species to bivalves in pollution biomonitoring and environmental risk assessment in the aquatic ecosystem. In the present study, a novel in vivo exposure sponge culture model was developed from field-collected and cryopreserved sponge (Hymeniacidon perleve) cells to investigate the genotoxic effects of environmentally relevant metals in the laboratory. Sponge cell aggregates were cultured and exposed to noncytotoxic concentrations (0-0.4 mg/L) of cadmium chloride, nickel chloride, and sodium dichromate as quantified by the reduction of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and DNA-strand breaks assessed by the comet assay. Reactive oxygen species (ROS) formation was quantified by oxidation of 2',7'-dichlorofluorescin diacetate in sponge cell aggregates exposed to the same concentrations of Cd, Cr, and Ni. There was a statistically significant (p < 0.05) concentration-dependent increase in the level of DNA-strand breaks and ROS formation in all of the metals investigated. To the best of our knowledge, we have utilized for the first time the alkaline comet assay to detect DNA-strand breaks in marine sponge cells and demonstrated that exposure to noncytotoxic concentrations of Cd, Cr, and Ni for 12 h results in a concentration-dependent increase in DNA damage and levels of ROS production. In conclusion, we have developed a novel in vivo model based on culture of cryopreserved sponge cells that is compatible with the alkaline comet assay. Genotoxicity in marine sponges measured by the comet assay technique may be a useful tool for biomonitoring research and risk assessment in aquatic ecosystems. Environ Toxicol Chem 2017;36:3314-3323. © 2017 SETAC.

show abstract

Surface water characteristics and trace metals level of the Bonny/New Calabar River Estuary, Niger Delta, Nigeria

Cited by 36 publications

References 16 publications

Microbiological Examination and Physicochemical Analysis of Estuary Water Used as a Point of Source Drinking Water

Microbiological Examination and Physicochemical Analysis of Estuary Water Used as a Point of Source Drinking Water

Investigation of borehole water contaminant profile at igwuruta solid waste dumpsite, Rivers State, Nigeria

Development of cultures of the marine sponge Hymeniacidon perleve for genotoxicity assessment using the alkaline comet assay

Contact Info

Product

Resources

About