Distribution of heavy metals in marine bivalves, fish and coastal sediments in the Gulf and Gulf of Oman

Mora, Stephen de; Fowler, Scott W.; Wyse, E.; Azemard, Sabine

doi:10.1016/j.marpolbul.2004.02.029

Cited by 319 publications

(135 citation statements)

References 46 publications

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“…Observed metal contents in the surface sediments of the Hara Biosphere Reserve are compared with similar studies in the other parts of Persian Gulf in Table 1. The results showed that the levels of Pb, Cd and Ni in Hara Biosphere Reserve were higher than those in Khor Ahmadi, Khor Gazale, Khor Ghanam (Safahieh et al, 2011), coastal sediments of Qatar (De Morsa et al, 2004) and Qaruh Island (Price et al, 1994), as well as Fe concentration in this study was higher than those in coastal sediments Qaruh Island, Al Malikiyah and Ras Al Khafji in the Persian Gulf (Price et al, 1994). A comparison of the mean metal concentrations in the 0.063-mm fraction surface sediments with the corresponding values of these metals in the average shale (Turekian and Wedepohl, 1961) reveals that surface sediments are polluted with Pb, Cd and Ni in the Hara Biosphere Reserve.…”

Section: Resultsmentioning

confidence: 53%

Application of geoaccumulation index and enrichment factor for assessing metal contamination in the sediments of Hara Biosphere Reserve, Iran

Nowrouzi¹,

Pourkhabbaz

2014

Chemical Speciation & Bioavailability

170

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Surface sediments from the Hara Biosphere Reserve of the Persian Gulf were collected to evaluate the contamination of metals including Pb, Cd, Ni and Fe. The sediment samples were subjected to a total digestion technique and analysed by atomic absorption spectrometer for metals including Pb, Cd, Ni and Fe. The concentration of heavy metals in the surface sediments was determined in grain size fractions, 2-1, 1-0.25, 0.25-0.063 and <0.063 mm. The highest mean concentration of heavy metals was observed in the <0.063 mm fraction and decreased with increasing size fraction, also metal concentrations in the 0.063 mm fraction represented the next decreasing order Fe>Ni>Pb>Cd. Cd had a higher enrichment factor than the other metals, and the I geo value for Cd in the most stations was classified as uncontaminated to moderately contaminated and moderately to strongly contaminated. This, combined with the average of I geo of Cd as 1.36 ± 0.22, suggested that surface sediments of Hara Biosphere Reserve were moderately polluted by this metal. The results also showed that industrial activities around Hara Biosphere Reserve were the most important agents for releasing heavy metals in the area under study. Pearson correlation indicated that there were significant positive associations between Cd-Pb (r=0.523, P< 0.01) in the <0.063 mm fraction.

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Section: Resultsmentioning

confidence: 53%

Application of geoaccumulation index and enrichment factor for assessing metal contamination in the sediments of Hara Biosphere Reserve, Iran

Nowrouzi¹,

Pourkhabbaz

2014

Chemical Speciation & Bioavailability

170

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“…Consequently, an analysis of the distribution of heavy metals in sediments adjacent to populated areas could be used to investigate anthropogenic impacts on ecosystems and would assist in the assessment of risks posed by human waste discharges (Hu et al 2002;de Mora et al 2004;Zheng et al 2008). Under certain conditions, these metals may accumulate to a toxic concentration level which may lead to ecological damage (Jefferies and Freestone 1984).…”

Section: Introductionmentioning

confidence: 99%

Human health risk and ecological risk assessment of metals in fishes, shrimps and sediment from a tropical river

Giri

Singh

2014

Int. J. Environ. Sci. Technol.

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Concentrations of Cd, Cu, Pb, Ni, Zn and Cr were estimated using inductively coupled plasma-mass spectrometry in sediment, water, fish and shrimp collected from the Subarnarekha River. Fish species Mystus gulio, Puntius conchonius, Labeo calbasu, Labeo rohita and Labeo bata, while the shrimp species Penaeus indicus, were used for the study. The range of Cd, Cu, Pb, Ni, Zn and Cr in all the samples was found to be 0.004-0.85, 0.75-145.2, 0.03-0.41, 1.25-21.5, 12.4-109.5 and 0.22-11.36 mg kg -1 fresh, respectively. The concentrations of metals in the fish and shrimp exceed the limits of Indian and international standards for food for Cu, Ni, Cd and Zn in some samples. Higher concentrations of the metals were observed in the shrimp as compared to fish samples. The calculated daily intakes of the metals through the consumption of fish and shrimps ranged from 0.30 to 27.0 % of the corresponding tolerable limits suggested by the Joint FAO/WHO Expert Committee on Food Additives. The mean target hazard quotient values for the 6 metals were below 1 for all the samples; however, the maximum was more than 1 for shrimp Cu and Cr. The results indicated that the concentration of the metals in shrimps at some locations was alarming and pose an appreciable hazard risk on human health. Potential ecological risk analysis of sediment indicated that most of the sites posed moderate ecological risk with Cd posing a considerable risk at all the sites.

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“…Pollution is not unusual for Oman Sea, as reports of adverse conditions in this part of the world continue alerting people to local ecological disasters (De Mora et al 2004, Al-Darwish et al 2005, Abdel Gawad et al 2008, Khan 2008.…”

Section: Discussionmentioning

confidence: 99%

Asymmetry in certain morphological characters of the carangid species Decapterus russelli, collected from the Lemah coastal area, on the northern part of Oman Sea

Jawad

Al-Mamry

Al-Kharusi

et al. 2010

Oceanological and Hydrobiological Studies

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Asymmetry analysis has been carried out for some bilateral characters of Decapterus russelli (Family: Carangidae) collected from Oman Sea. The results showed that postorbital length demonstrated the highest incidence of asymmetry among the characters studied. The lowest asymmetry value was for the number of pectoral fin rays. An increasing trend in the asymmetry value with fish length is also obtained for preorbital length, number of pectoral fins and number of lateral line scutes. A similar trend is also evident in the postorbital length and eye lens diameter of individuals with body sizes <160 mm. The possible causes of asymmetry in this species are herein discussed in relation to different pollutants and their presence in the area.

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Distribution of heavy metals in marine bivalves, fish and coastal sediments in the Gulf and Gulf of Oman

Cited by 319 publications

References 46 publications

Application of geoaccumulation index and enrichment factor for assessing metal contamination in the sediments of Hara Biosphere Reserve, Iran

Application of geoaccumulation index and enrichment factor for assessing metal contamination in the sediments of Hara Biosphere Reserve, Iran

Human health risk and ecological risk assessment of metals in fishes, shrimps and sediment from a tropical river

Asymmetry in certain morphological characters of the carangid species Decapterus russelli, collected from the Lemah coastal area, on the northern part of Oman Sea

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