Heavy metals after entering into aquatic environment accumulate in tissues and organs of fish that enter the food chain and elevate up to the highest level of consumers akan et al. The fish toxicity by heavy metals was in the following order. Graphical representation of the mean concentrations of the heavy metals metals in tilapia zilli figure 2 also highlighted a graphical distribution of the heavy metals concentrations in the tilapia fish species and the extent of the absorption of all the heavy metals analyzed by the tilapia zilli may all be seen in the figure. Jul 18, 2009 the untreated industrial and sewage wastes arising from industries and metropolitan activities make their passage to the river ravi, pakistan, where balloki headworks is one of the major sites of effluent concentration.
Heavy metals, bioaccumulation, tilapia, wadi hanifah. These health risks have been delineated in studies of heavy metal contamination in fish in taiwan 29. Determination of heavy metals in selected fish species. Determination of some heavy metal content in tilapia and cat fish. Cobalt, chromium and nickel were not detected in any of the samples while other metals are more concentrated in the sediment and fish parts than water.
The first weight and the total length of the examined fish were recorded. Introduction anthropogenic activities continuously increase the amount of heavy metals in the environment, especially in aquatic ecosystem. Tilapia fish, african cat fish, clarias gariepinus, oreochromis niloticus, toxic metals, water pollution, lake hawassa, lake ziway to cite this article kiflom gebremedhin, tarekegn berhanu, determination of some selected heavy metals in fish and water samples from hawassa and ziway lakes, science journal of analytical chemistry. The mean total lengths and total weights of fish were 15. Nwaedozie jm 1998 the determination of heavy metal pollution in some fish at the local seafood and supermarkets and is believed to serve as samples from river kaduna. Heavy metals such as cadmium, lead and mercury are significant environmental contaminants. The tilapia zilli gills contained the highest concentration 52.
Effects of heavy metal pollutants on the reproduction of nile. Department of public health, pharmacology and toxicology. The average contents ofheavy metals in fish samples were. Determination of some selected heavy metals in water. Levels of zn and pb in the tilapia muscle from mining pool were higher than fish from galas river. The levels of lead, zinc, copper, iron, manganese, cadmium and mercury were determined in various body parts of two species of catfish. Pdf screening of imported tilapia fillets for heavy.
The sediment contains higher concentration of fe with a value of. Determination of some heavy metals content in the body of. Determination of some heavy metals in nile tilapia oreochromis. The results indicated that tilapia zilli gills contained the highest concentration 52. The fish specimens were acclimatized in the laboratory conditions for 15 days. Assessment of heavy metals in water, fish and sediments.
Heavy metals concentration in different organs of tilapia fish. To assess the levels of selected heavy metals in tilapia fish, sediments and water frommbagathi and ruiru tributaries of athi river, kenya. The results of this analysis reported that there were. Table 11heavy metal residues in different species of fish from the piracicaba river.
From four selected markets in selangor, peninsular malaysia. The results obtained showed that iron fe had the highest concentration with average of 8. This study was designed to evaluate the concentration of various toxic elements in fishes of that area compared to a nearby fish farm. Determination of heavy metals in fish tissues, water and. Impact assessment of some heavy metals on tilapia fish, oreochromis niloticus,in burullus lake, egypt.
However, it has been receiving pollution threat from effluents doc, pdf. Sampling stations in the river nile delta lakes edku, borollus and manzala. Concentrations of all heavy metals detected, except zinc, in the fish species were higher. The accumulation of heavy metals in fish has been extensively studied and well documented. This study was conducted to determine the concentrations of lead pb and cadmium cd in various organs of oreochromis niloticus black tilapia and its. This work reports the concentrations of heavy metals zn, cu, pb, cd, fe and ni in the head, muscle and tail of two species of fish. Pdf impact assessment of some heavy metals on tilapia fish. The acute toxicity test was performed according to the standard methods in apha and the value was calculated by probit analysis. Determination of heavy metals in tilapia mossambicuis fish, associated water and sediment from ureje dam in southwestern nigeria. Irrespective of fish species, range for muscle samples are zn nicdcumnpb. Burullus lake, metals, water, nile tilapia, oreochromis niloticus background. Determination of some selected heavy metals in fish and water samples from a section of migori river francis ongachi olal department of physical sciences, rongo university, p. Estimation of heavy metal mn, zn, fe, ni, cu, and pb. Determination of some heavy metals content in the body of two.
The fish muscles were carefully dissected for digestion and the levels of heavy metals were determined using microwave milestones ethos 900 double beam atomic absorption. The high level of pollution caused by heavy metals and their threat they pose to consumers and public health cannot be over emphasized. The concentration of certain heavy metals pb, zn, cu, mn, and cd was determined in the water, sediments, and tilapia fish coptodon zilli, and oreochromis niloticaus from the tigris river and the fish ponds of marine science centre, university of basrah, southern iraq, during the period apriljune 2019. Heavy metals c o n c n e t r a t i o n m g l figure 2. Manganese, cadmium, lead, mercury and arsenic mn, cd, pb, hg and as including iron fe, were determined in catfish and tilapia samples from densu river at weija in 2012. It is just to the south no literature report on the levels of heavy metal of lake abaya and the city of arba minch and east of the concentrations in water, tilapia and barbus fish species guge mountains. Determination of heavy metals in freshwater fish abstract good water quality is fundamental to human health and sustenance of aquatic ecosystems. Heavy metals in fish according to samir and shakir 8 the concentration of heavy metals in fish gills and liver is much higher than that in muscles. Determination of lead and cadmium in tilapia fish oreochromis. For the normal metabolism of the fish, the essential metals must be taken up from water, food or sediment canl. Pdf analysis of heavy metal concentrations in tilapia fish. All the analysis were determined at significant level of p0. Flesh possessed the lowest concentration of all the metals.
Pdf determination of heavy metals in fish tissues, water. Pdf concentrations of cadmium cd, zinc zn, lead pb, nickel ni and cobalt co were measured in various organs such as in liver, gill. Due to the extended domestic activities and urbanization as well as the continuous industrial and agricultural growth of the region, spring water quality is potentially changing. Bioaccumulation of heavy metals in aquatic animals causes serious threat to human health via persistent consumption of fish. A method for wet digestion of fish tissue for heavy metal analyses. Determination of heavy metals in fresh water fish species. Heavy metal has positive and negative effect on human health and surroundings. Assessment of heavy metals in water, fish and sediments from. Samples of flesh were digested in nitric acid and 14 different heavy metals. The concentration of heavy metals zinc, lead, manganese, iron, copper, cobalt, chromium, cadmium and nickel in water, sediment and different parts of tilapia mossambicus fish were analyzed using atomic absorption spectrophotometer.
Concentrations of heavy metals detected in the liver, gill and muscle samples showed different capabilities for accumulating. Introduction tilapia is a fish distributed in the tropical zones around the world. Bioaccumulation of some heavy metals in tilapia fish relevant. Most of them are toxic even at very low concentrations. Determination of some heavy metals concentration in the. Analysis of heavy metal concentrations in tilapia fish. This study was conducted to determine the concentrations of lead pb and cadmium cd in various organs of oreochromis niloticus black tilapia and its potential human health risk.
The highest accumulations of iron fe and lead pbconcentration were observed in liver and gill of tilapia fish from chamo lake. Pdf determination of selected heavy metals and iron. Average concentration of heavy metals in river benue. The mean values of heavy metals mn, zn, fe, ni, cu, and pb in surface water of burullus lake during winter and summer for the year 2014 were 1. Heavy metals concentration in different organs of tilapia.
Jun 26, 2019 a total of 600 freshly caught fish samples 200 each of nile tilapia, flathead grey mullet, and african catfish were collected from manzala lake, egypt, and analyzed for determination of heavy metal residues using an atomic absorption spectrophotometer. Among sea foods, fish are commonly consumed and, hence, are a connecting link for the transfer of toxic heavy metals in human beings. Therefore, determination of heavy metal levels of fish is tremendously important for the health of human beings uysal et al. Heavy metals are nonbiodegradable and persistent contaminants in the environment causing serious illness in fish, animals and human. Determination of heavy metals in selected fish species found. Assessment of pesticide and heavy metal residues in tilapia fish from machakos and kiambu counties, kenya a thesis submitted in partial fulfillment of requirements for masters degree of university of nairobi pharmacology and toxicology by dr. Impact assessment of some heavy metals on tilapia fish. Determination of some heavy metals in nile tilapia. Heavy metals have the tendency to accumulate in various organs of marine organisms, especially fish, which in turn may enter into the human metabolism through consumption causing serious health hazards. Water samples, sediments, tilapia and cat fishes from each of epe and badagry lagoons in lagos state, nigeria were analyzed quantitatively for the presence of zinc, nickel and iron using perking elmer atomic absorption spectrophotometer. Analysis of heavy metals in muscle tissues of tilapia zilli.
Analysis of heavy metals in water and fish tilapia. Pdf screening of imported tilapia fillets for heavy metals. Analysis of heavy metals in muscle tissues of tilapia. Pdf determination of heavy metals in tilapia using various. Heavy metals under study in the edible parts of tilapia were within the safety permissible level for human use. Accumulation of heavy metals in tilapia fish oreochromis.
Determination of heavy metals in tilapia using various. Bedassa wm 2020 determination of some heavy metals in nile tilapia oreochromis niloticus fish species in the water of lake hawassa. Tilapia fish mortality was significantly higher with higher concentration of toxic metals. Pdf study for determination of heavy metals in fish species. The levels of the heavy metals varied significantly among fish species and organs. Jan 01, 2015 heavy metals in fish were analyzed by inductively coupled plasma mass spectrometry icpms and atomic absorption spectrophotometer aas. Heavy metals in commercial fish and seafood products and. Determination of heavy metal in fresh water fish project. In the czech republic, as in other developed parts of the world, there is an increased risk of heavy metals hg, cd, pb etc.
Generally, the values of metals in the fish muscles were accepted by the international legisla tion limits and are safe for human consumption. Heavy metal residues in some fishes from manzala lake, egypt. Analysis of heavy metals in water and fish tilapia sp. Samples from tasik mutiara, puchong 349 for rocky bottoms and species with more affinity to sandy or muddy bottom. Determination of heavy metal accumulation in fish species. Field manual for water quality monitoring, an environmental. Assessment of some heavy metals in the selected freshwater.
The degree of metal contamination could be evaluated by the determination of the contamination. Concentration of the selected heavy metals in the fish samples. Determination of the heavy metals in the filtrate of the fish organ digests was achieved by atomic absorption spectrophotometer shimadzu model 6800 with graphite furnace model gfa 7000, hydride unit was used for determination of mercury. Analysis of these selected heavy metals in the fish samples reveals that these selected heavy metals are higher in catfish than tilapia irrespective of. Alkhadoud spring is one of the largest spring in alhassa governorate saudi arabia. Association between heavy metals and selected reproductive. Determination of metals in fish and mussel species by inductively coupled plasmaatomic emission spectrometry. In the tilapia fish sample, cr, cd, mn and cu bioaccumulate more in the. Pdf determination of heavy metals in selected fish. Assessment of heavy metal residues in water, fish tissue and human. Determination of heavy metals in tilapia using various digestion methods a1 pramoda ranasinghe, b2 s.
Effects of heavy metal pollutants on the reproduction of. Determination of selected heavy metals and iron concentration. Pdf study for determination of heavy metals in fish. Box 103 40404, rongo abstract samples of tilapia oreochromis niloticus and african catfish clarias gariepinus were collected from a section of migori river. It reveals a dissimilar pattern in terms of detection limits of the various heavy metals in tilapia. The water condition was very muddy caused by the effluent discharge into the lake. Determination of some selected heavy metals in fish and water. The analysis was done using atomic absorption spectroscopy aas. This paper emphasises on the determination of 96hr lc50 value oflead nitrate for the fish, labeo rohita. Bioaccumulation of heavy metals zn, pb, cd, and cu was determined in the liver, gills, and flesh from benthic and pelagic fish species collected from lake geriyo covering two seasons. Concentrations of some heavy metals pb, cd, hg, cu and cr were determined in water, sediment and tissues of tilapia fish collected from wadi hanifah during summer 2010.
The tropical freshwater fish, tilapia, is an important cultural fish because it reproduces very easily and does. Clarias gariepinus catfish and oreochromis niloticus tilapia fish obtained from kwalkwalawa river along dundaye village, sokoto state. Heavy metal, tilapia fish, catfish, lake, dry season, wet season. Pdf determination of heavy metals in selected fish species.
Heavy metals, tilapia fish organs, bangi area, five sites. Heavy metals are the naturally occurring elements that have high atomic weights. Liver was the target organ for zn, cu, and pb accumulations. Atomic absorption spectrometry was used to analyze the concentrations of heavy metals pb, cd, cr, fe and as in the catfish and tilapia from kiri dam and river gongola, northeastern nigeria. In kiri, the concentration of pb in catfish ranges between 0. Accumulation of certain heavy metals in nile tilapia aauetd. Heavy metals have the tendency to accumulate in various organs of fish which in turn may enter into human metabolism through consumption causing serious health hazards khalifa et al. Bioaccumulation of heavy metals in some tissues of fish in. Average concentration of heavy metals in organs of tilapia. Fish samples were obtained from the piracicaba river during marchoctober, 2008. Samples of tilapia oreochromis niloticus and african catfish clarias gariepinus were collected from hawassa. Pdf determination of heavy metals in tilapia oreochromis. The lisikili river in zambezi region, namibia is a major perennial river which serves diverse economic purposes in the host community.
Apparently, the concentration ranges of the metals detected were. Heavy metal residues in some fishes from manzala lake. Determination of some selected heavy metals in fish and. Materials and methods sampling area the nile delta lakes fig. Determination of some selected heavy metals in fish and water samples from hawassa and ziway lakes. The liver tissues obtained the highest accumulation of zn 423 mg kg1 followed by cu 6 mg kg1 with the highest concentration of each toxic metal. The highest mean concentration of the heavy metal at all. Heavy metals concentrations were determined in fish organs of tilapia zilli and clarias gariepinus from river benue along makurdi metropolis using atomic absorption spectrophotometer. The rest of selected heavy metals were still not detected in tilapia table 3. Determination of heavy metals in fresh water fish species of.
The determination of metals concentration in the selected organs of liver, gill, kidney, intestine and muscle of the selected freshwater fish tilapia mossambica, claris batrachus, labeo rohita, mystus vittatus and cyprinus carpio communis were presented in figure 15. Pdf determination of heavy metals by inductively coupled. Some heavy metals are known as potentially toxic include arsenic, lead, aluminium and cadmium, others are essential such as iron, zinc and copper. So, this work as will create awareness on the harmful effect of heavy metals consumption and suggest ways by which pollution by heavy metals can be reduced.
Kaumal a department of chemistry, faculty of science. The result of the heavy metal analysis in the samples of catfish and tillapia collected from the study area is given in table 2. Introduction over the last few decades, there has been growing interest in determining heavy metal levels in the marine environment and attention was drawn to the measurement of contamination levels in public food supplied, particularly fish. Concentrations of cadmium cd, zinc zn, lead pb, nickel ni and cobalt co were measured in various organs such as in liver, gill and muscle of tilapia fish oreochromis niloticus which were collected from serdang night market, bangi night and wet markets and kajang wet market, in selangor, peninsular malaysia. Determination of lc50 of lead nitrate for a fish, labeo. Determination of heavy metals in fish tissues, water and sediment from epe and badagry lagoons, lagos, nigeria. This study aims to determine the most appropriate digestion method out of four different methods to analyze the heavy metal concentrations in muscle samples of tilapia. Fish has been recognized as an important food source for the human body. Determination of heavy metals in tilapia mossambicuis fish. Bioaccumulation of heavy metals in fish tilapia zilli and. Environmental and physiological impacts of heavy metals on. This study was conducted to measure toxic heavy metal concentrations in water and fish samples along.
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