Heavy metals in seawater, sediments and marine organisms in the Gulf of Chabahar, Oman Sea

Bazzi, Aziz Ollah

doi:10.5897/joms2014.0110

Cited by 81 publications

(38 citation statements)

References 34 publications

(37 reference statements)

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“…Olusola and Festus [19], reported that the concentrations of Cd, Cu, Cr, Pb and Zn in the sediment samples of coastal waters of Ondo State Niger Delta were much below the probable effect concentration of sediment metals levels. Also, by comparing the concentrations of heavy metals analyzed in the water and sediments samples, it can be concluded that heavy metals are highly accumulated in sediments than water confirming what have earlier been reported that sediments act as reservoir for all contaminants and dead organic matter depending on the sites partitioning behaviour [19,23]. Tables 3 and 4 revealed that Onne water and sediment have greater ion contents and more salty than other sampling locations although there can be natural variability such as temperature, tidal and seasonal flushing.…”

Section: Discussionsupporting

confidence: 81%

Effects of Aromatic Hydrocarbons and Marine Water from Niger Delta on the β-Galactosidase Activity of Mutant Escherichia coli

Uba

2019

ACRI

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Aims:To determine effects of aromatic hydrocarbons and marine water from Niger Delta on the β-Galactosidase activity mutant Escherichia coli. Study Design: Fifteen treatments and the control designs were set up in triplicates in microtitre plates containing 200 µL of the 100% concentration of samples (three marine waters and distilled water spiked each with xylene, anthracene and pyrene). The fifteen treatments and control (HgCl 2 ) set ups designated as A, B, C, D, E, F and G were used to determine their median effective concentration (EC 50 ) for the inhibition of β-Galactosidase activity of mutant Escherichia coli. Place and Duration of Study: Department of Microbiology, Chukwuemeka Odumegwu Ojukwu University, Uli Nigeria between February, 2017 to July, 2017. Methodology: A laboratory scale study was carried on the water samples from the three studied areas using physicochemical analyses and bacterial Toxi-chromo test. Results: The findings revealed that the three sampling sites contain higher quantities of aromatic hydrocarbons, heavy metals and other physico-chemical parameters in the sediment samples than water samples. Xylene distilled water had the highest EC 50 of 3.417 ± 0.094 mg/l while pyrene Onne water had the least EC 50 of 0.015 ± 0.002 mg /L. Also, pyrene and anthracene are significantly (P = .05) highly toxic aromatic hydrocarbons (EC 50 < 1 mg /L) while xylene is a Original Research Article ArticleUba; ACRI, 16(3): 1-16, 2019; Article no.ACRI.46679 2 significantly (P = .05) toxic aromatic hydrocarbon (1 mg /L < EC 50 ≤ 10 mg /L) compare to the positive control (HgCl 2 ) (EC 50 < 1 mg /L) indicating that enzyme inhibition among test samples were much different from the positive control. Conclusion: Thus, the toxicity results (< 0.1 mg /L < EC 50 ≤ 10 mg /L) in this study indicate that the potential eco-toxicity and environmental health effects of these toxicants should be given attention in order to get rid of their dangerous outcomes.

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Section: Discussionsupporting

confidence: 81%

Effects of Aromatic Hydrocarbons and Marine Water from Niger Delta on the β-Galactosidase Activity of Mutant Escherichia coli

Uba

2019

ACRI

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“…Heavy metals in marine water such as copper (Cu), zinc (Zn), lead (Pb), cadmium (Cd), chromium(Cr), iron (Fe), nickel (Ni), manganese (Mn), sulphide (S) and many more trace elements have been reported (Ponnamperuma 1984;Bazzi 2014). Unfortunately, the mechanisms involved in heavy metal tolerance by mangrove plants are poorly understood.…”

Section: Heavy Metal Exposurementioning

confidence: 98%

Mangrove root: adaptations and ecological importance

Srikanth

Lum

Chen

2015

Trees

163

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Key message This review gives a comprehensive overview of adaptations of mangrove root system to the adverse environmental conditions and summarizes the ecological importance of mangrove root to the ecosystem. Abstract In plants, the first line of defense against abiotic stress is in their roots. If the soil surrounding the plant root is healthy and biologically diverse, the plant will have a higher chance to survive in stressful conditions. Different plant species have unique adaptations when exposed to a variety of abiotic stress conditions. None of the responses are identical, even though plants have become adapted to the exact same environment. Mangrove plants have developed complex morphological, anatomical, physiological, and molecular adaptations allowing survival and success in their high-stress habitat. This review briefly depicts adaptive strategies of mangrove roots with respect to anatomy, physiology, biochemistry and also the major advances recently made at the genetic and genomic levels. Results drawn from the different studies on mangrove roots have further indicated that specific patterns of gene expression might contribute to adaptive evolution of mangroves under high salinity. We also review crucial ecological contributions provided by mangrove root communities to the ecosystem including marine fauna.

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“…The high level of Pb in the fishing harbor of the SC could be attributed to the spill of leaded petrol from fishing boats and dust, which holds a huge amount of lead from the combustion of petrol [71][72]. The same source of metal pollution was found in the fishing harbor of the Gulf of Chabahar [72] and along the Jeddah Red Sea Coast [71]. Indeed, Pb is used in a number of industrial applications and has been used as an anti-knocking additive in gasoline and is deposited following combustion [73].…”

Section: Origin Of Trace Element Loading In Surface Waters In Three Gmentioning

confidence: 99%

Spatial Distribution and Source Identification of Heavy Metals in Surface Waters of Three Coastal Areas of Tunisia

Drira¹,

Sahnoun²,

Ayadi³

2017

Pol. J. Environ. Stud.

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The concentrations of selected dissolved trace elements (Ni 446-919 µg L -1 , Pb 383-1015, Fe 195-739, Cu 217-318, Cr 156-336, Zn 9-236, Mn 0-187, Co 0-310, and Cd 26-77) were assessed in the surface water of 30 stations belonging to three coastal areas along the Gulf of Gabes, i.e., the southern (stations 1-10) and northern (stations 11-20) coastal areas of Sfax and the Ghannouch area (stations 21-30) during October and November 2014. Results showed that dissolved metals in surface waters, which were analyzed by means of flame atomic absorption spectrophotometry, followed the concentration levels (Pb>Ni>Fe>Cu>Cr>Co>Mn>Cd>Zn) on the southern and (Ni>Pb>Fe>Cu>Cr>Zn>Mn>Co>Cd) on the northern coasts of Sfax, and (Ni> Fe>Pb>Cu>Cr>Zn>Co>Cd>Mn) in the Ghannouch area. In the southern and the northern coasts of Sfax, all analyzed metals were detected in 100% of sampled stations except Co, which was revealed in 90 and 80% of stations, respectively. However, in the Ghannouch area all analyzed metals were detected in 100% of sampled stations except Mn, which was revealed in 70% of stations. These trace elements, except for Fe and Mn, exceeded the safety limit of the USEPA water quality criteria for the protection of aquatic fauna and flora survival and their uses. The Sfax and Ghannouch coastal areas should be considered relatively polluted with metals (Zn, Ni, Pb, Co, Cr, Cd, and Cu). The elevated metal contents were attributed to anthropogenic waste inputs around the study area. The main sources of Ni and Co loading in the seawater were the SIAPE phosphoric acid and fertilizer plant and a waste water treatment plant located close to station 1. Whereas the fishing harbor of Sfax, which is situated on the southern coast (station 9), is the second source of high amounts of Cd, Mn, Cr, and Pb. This situation has led to serious human health risks and chronic toxicity caused by their potential bioaccumulation in some aquatic fauna such as shrimp, fish, crab, shellfish, mollusk, and cephalopoda.

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Heavy metals in seawater, sediments and marine organisms in the Gulf of Chabahar, Oman Sea

Abstract: Levels of the heavy metals

Cited by 81 publications

References 34 publications

Effects of Aromatic Hydrocarbons and Marine Water from Niger Delta on the β-Galactosidase Activity of Mutant Escherichia coli

Effects of Aromatic Hydrocarbons and Marine Water from Niger Delta on the β-Galactosidase Activity of Mutant Escherichia coli

Mangrove root: adaptations and ecological importance

Spatial Distribution and Source Identification of Heavy Metals in Surface Waters of Three Coastal Areas of Tunisia

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