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Ikem, Abua; Egiebor, Nosa O.; Nyavor, Kafui

doi:10.1023/a:1025694315763

Cited by 233 publications

(72 citation statements)

References 38 publications

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“…The higher levels of metals in liver relative to gills and muscle may be attributed to the affinity or strong coordination of metallothionein protein with the metals [11,12].…”

Section: Resultsmentioning

confidence: 99%

Metal Concentration in Fresh Water Fish Organs

Raju¹,

Somashekar²,

Prakash³

2013

OJMetal

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This study was conducted during March to May of 2010 dry season, giving prime thrust to determine the metal concentrations in commercial fish species of Catla catla and Labeo rohita, collected from various points along the river Cauvery. The liver, gill and muscle tissues of fish were analyzed for Fe, Pb, Zn, Ni, Mn, Cu, Cr and Cd using Atomic Absorption Spectrophotometry (AAS-model: 6300). The Catla catla has shown more accumulation potency for all the metals than Labeo rohita. The liver in both fish species has better accretion capacity compared to gill and muscle and the same was noticed by bioaccumulation factor. The results of bioaccumulation factor were in the order of Ni > Zn > Cu > Mn > Fe > Cr > Pb > Cd. Elevated trend was noticed among the essential metals and decreased trend among the nonessential metals were observed in both fish species.

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“…The higher levels of metals in liver relative to gills and muscle may be attributed to the affinity or strong coordination of metallothionein protein with the metals [11,12].…”

Section: Resultsmentioning

confidence: 99%

Metal Concentration in Fresh Water Fish Organs

Raju¹,

Somashekar²,

Prakash³

2013

OJMetal

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“…Moreover, they are safer and simpler and provide more controlled and reproducible conditions than hot plate or block digesters (Nadkarni,1984 andNouri et al, 2007). In this study, heavy metals digestion was done using EPA Method 3015 (Ikem et al, 2003) and involved a high performance microwave assisted digestion Milestone Labstation using a 6 Monobloc Microwave Ethos D Microwave Labstation (Baron et al, 2004) -an automatic user interface system with a direct automatic temperature and pressure control of up to 300°C and 100 Bar respectively under the given power reference.…”

Section: Microwave Digestionmentioning

confidence: 99%

“…All these released pollutants have a great ecological impact on the water quality and especially on environmental resistance of aquatic macrophytes. In addition, Ikem et al (2003) have characterized importance of sediments in heavy metals pollution. They state that sediments are important sinks for various pollutants like heavy metals and play a significant role in the remobilization of contaminants in aquatic systems under favorable conditions and in interactions between water and sediment.…”

Section: Introductionmentioning

confidence: 99%

Impact assessment of heavy metals pollution of Vartur lake, Bangalore

Jumbe

Nandini

2009

JANS

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:The unscientific disposal of wastes and pollution in urban water bodies has caused immense problems not only to human beings but also to the aquatic biodiversity. Assessment of heavy metals in Vartur Lake, Bangalore, revealed that Cadmium (Cd), Cobalt (Co), Chromium (Cr), Nickel (Ni), and Lead (Pb) all exceeded drinking water standards. Nevertheless, Chromium (Cr) exceeded the CPCB's tolerance limits for water bodies subjected to effluent discharge. In Eichornia crassipes, Cd, Co, Cr, and Ni were critical. In the sediments, Cadmium (Cd) and Nickel (Ni) exceeded the Probable Effect Level (PEL). Sediment Geo-accumulation Index of the lake showed moderate contamination with Mn, Cu, and Pb. Cr had the highest plant/sediments metal concentration factor even though its bioavailability in plants (71.5 ppm) was lower compared to Manganese (192.3 ppm). This calls for immediate action to be implemented to carry out necessary environmental mitigation measures for the lake.

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“…There is evidence that exposure of salmon to sublethal copper levels causes toxicity and results in the impairing osmoregulation and ion regulation in their gills with a loss of chemosensory function, which affects predator-avoidance behavior [37]. Exchangeable iron (Fe) usually relates to the adsorbed metals on the sediment surface can be easily remobilized into the Lake water [38]. Iron toxicity caused reduced growth rate in the Indian major carps like rohu and catla [39].…”

Section: Discussionmentioning

confidence: 99%

Bioaccumulation of Trace Metals in Tissues of Rohu Fish for Environmental Risk Assessment

Noor¹,

Zutshi²

2016

JWARP

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In the present study, the two lakes, Vengaiah lake (Lake A-Sewage polluted receiving discharge from storm water drain) and Yellamallappa Chetty lake (Lake B-Industrially polluted) situated near Krishnarajpuram-Hoskote taluk, Bangalore, Karnataka were selected for analysis of trace metals viz., arsenic, aluminium, cadmium, lead, mercury, iron, copper and zinc in water samples. Muscle and gill tissues of freshwater fish Labeo rohita reared in these water bodies were analysed for bioaccumulation of trace metals. Hebbal fish farm was considered as a reference site (Control site) for water and fish samples. Trace metals were analysed by atomic absorption spectroscopy and values were compared with those recommended by FAO/WHO in water and fish samples. Trace metals such as Al, As and Hg were detected in the water sampled from lake B which is attributed to the differences in the sources of pollutants. Fish tissues viz., muscle and gills sampled from Lake B exhibited high concentration of Al, Pb and Cd content showing a positive correlation with their concentration in water samples. The remaining metals as Cu, Zn and Fe were detected in water sampled from all water bodies and also in the fish tissues. Gills exhibited higher concentration of metals in fish from lake B. Bioaccumulation of these trace metals in fish tissues may cause potential danger to human health when consumed on regular basis. Thus necessary remedial measures are required to combat water contamination and its management keeping in view the aquatic ecosystem and public health. Values were statistically significant at P < 0.0001.

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Cited by 233 publications

References 38 publications

Metal Concentration in Fresh Water Fish Organs

Metal Concentration in Fresh Water Fish Organs

Impact assessment of heavy metals pollution of Vartur lake, Bangalore

Bioaccumulation of Trace Metals in Tissues of Rohu Fish for Environmental Risk Assessment

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