scholarly journals Assessment of heavy metals in water, sediment and fish tissues, from ,Sharkia province, Egypt

2011 ◽  
Vol 15 (2) ◽  
pp. 125-144 ◽  
Author(s):  
El-Sayed El-Sayed ◽  
Zeinab Khater ◽  
Mohamed El-Ayyat ◽  
El-Sayed Nasr
Keyword(s):  
Heavy Metals ◽  
Fish Tissues

scholarly journals Heavy-Metals as Environmental Health Indicator of the Lagos Lagoon Complex, Nigeria

2020 ◽  
Vol 3 (1) ◽  
Keyword(s):  
Heavy Metals ◽  
Statistical Analysis ◽  
Environmental Health ◽  
Atomic Absorption ◽  
Atomic Absorption Spectrophotometer ◽  
Health Indicator ◽  
Fish Tissues ◽  
Pollution Status ◽  
Water Fish ◽  
Lagos Lagoon

The study was conducted on heavy metals contents of water, fish tissues and sediment from Lagos lagoon complex, Nigeria. The aim was to assess the current environmental health/pollution status of the lagoon from three sample stations: Ologe lagoon [1], Badagry creek [2] and Lagos island [3]; each having three (3) hotspots. In all, twelve (11) heavy metals were determined between June and November, 2018. Heavy metals: Zn, Fe, Pb, Cu, Na, Potassium, Ca, Mn, Cd, Hg and Nickel were determined using Atomic absorption spectrophotometer (AAS). Results of mean Heavy metals in fish tissues were: Zn (0.741±0.38), Fe (5.59±8.32), Pb (0.12±0.17mg/l), Cu (0.16±0.25), Na (9.38±0.25), Ca (116.68±41.53), Mn (0.76±0.96), Pb (0.01±0.0), Cd (0.02±0.0), Potassium (12.09±2.34), Ni (0.02±0.02) and Hg (0.01±0.0). Statistical analysis showed variations in the distribution of Heavy metals which are mostly within recommended limits of WHO, FME, & LASEPA. Except for iron (Fe), which was found in excess in fish tissues, and other metals (lead), found in higher conc. in sediments than in water and fish tissues combined. This is indicative of heavy metals bio-accumulation in the study area.

Assessment of heavy metals bioconcentration factor (BCF) and genotoxicity response induced by metal mixture in Salmo salar tissues

2017 ◽  
Author(s):  
Gintarė Sauliutė ◽  
Milda Stankevičiūtė ◽  
Gintaras Svecevičius ◽  
Janina Baršienė ◽  
Roberta Valskienė
Keyword(s):  
Heavy Metals ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Peripheral Blood ◽  
Bioconcentration Factor ◽  
Micronucleus Test ◽  
Significant Elevation ◽  
Fish Tissues ◽  
Metal Mixture ◽  
Nuclear Abnormalities

The aim of this study was to evaluate metals bioconcentration factor (BCF) in gills, liver, kidneys and muscle in relation with genotoxicity effects of metal mixture in peripheral blood, kidneys, gills and liver erythrocytes of the Atlantic salmon (Salmo salar). Fish were exposed to maximum-permissible waterborne concentrations of Zn – 0.1, Cu – 0.01, Ni – 0.01, Cr – 0.01, Pb – 0.005 and Cd – 0.005 mg/L, respectively for 7 and 14 days. Genotoxicity was studied using the micronucleus test. In addition, erythrocyte nuclear abnormalities (ENAs) were analysed. Our study indicates that metal BCF in Atlantic salmon is tissue-dependent. Based on the BCF classification scale, the relatively low values of metals bioconcentration were assessed, except for Zn (gills) and Cu (liver) (359.6 and 594.0, respectively). Zn intensively concentrated in fish tissues, while Pb – least of all. Overall, metals were concentrated mostly in the liver, least – in the muscle. Significant differences among BCF values of Pb in gills and muscle and Cd in gills were measured between 7 and 14 d exposure groups. Treatment with metal mixture significantly increased micronucleus frequencies after 7 d of exposure in liver and peripheral blood erythrocytes. Significant genotoxicity response was not observed after 14 d treatment. The erythrocytic nuclei abnormalities determined in S. salar blood were nuclear bud on filament (NBf), nuclear bud (NB), blebbed (BL), kidney shaped, vacuolated (VacNuc), 8-shaped nuclei and fragmented-apoptotic (FA) erythrocytes. Significant elevation in total ENAs level was detected in kidneys and liver erythrocytes after 7 d treatment, while after 14 d – in gills and kidneys erythrocytes. No significant differences among analysed responses were measured between 7 and 14 d exposure groups, except total ENAs level in liver erythrocytes.

Heavy Metals in Fish Tissues and Different Species of Fish From the Southern Coast of Taiwan

1999 ◽  
Vol 16 (4) ◽  
pp. 283-296 ◽  
Author(s):  
Tsu-Chang Hung ◽  
Che-Chung Huang ◽  
Pei-Jie Meng ◽  
Aileen Chuang ◽  
Shu-Jen Wu
Keyword(s):  
Heavy Metals ◽  
Southern Coast ◽  
Fish Tissues

scholarly journals Bioaccumulation of heavy metals in the water, sediment and the tissues of Carassius gibelio (Bloch, 1782) from Eber Lake

2021 ◽  
Vol 38 (4) ◽  
pp. 507-514
Author(s):  
Numan Emre Gümüş ◽  
Cengiz Akköz
Keyword(s):  
Public Health ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Spring Season ◽  
Fish Tissues ◽  
The Public ◽  
Heavy Metal Concentrations ◽  
Carassius Gibelio ◽  
Metal Contents ◽  
Metal Levels

In this research, in order to observe the seasonal change between April 2014 and February 2015, heavy metal contents in the water, sediment and the Carassius gibelio (Bloch, 1782) tissues (muscle, gill and liver) growing in Eber Lake were determined. The obtained results showed that trace elements were founded in water, sediment and fish tissues. Among the average annual concentrations of water samples, the highest concentration was found for Mn (0.1584 mg/L) element and the lowest concentration was found for Pb element in the spring season. the maximum Average annual concentration was calculated for Mn (0.1584 mg/L, Spring) and the minimum was determined for Pb in water. In the sediment, Fe (16245.84 mg/kg, Spring) was found to be maximum and Co was the minimum. In fish, the highest concentrations were found in liver (Mo, Ni, Pb, Co, Cu, Fe), while the lowest concentrations were found in gill (Mn, Zn) and muscle (Cd, Cr, Se) tissues While the highest heavy metal concentrations were observed in the sediment, the minimum was found in the fish tissues (the ranking was the following; liver, gill and muscle). It was concluded that the heavy metal levels measured in the Lake Eber have no risk to the environment and to the public health.

scholarly journals Assessment of heavy metals concentration in the intestine, kidney and muscle of Oreochromis niloticus in Federal University of Agriculture Abeokuta reservoir

2020 ◽  
Vol 40 (1) ◽  
pp. 191-196
Author(s):  
F. I. Adeosun ◽  
A. A. Akinyemi ◽  
W. O. Abdul ◽  
A. O. Agbon ◽  
O. C. Odebiyi
Keyword(s):  
Heavy Metals ◽  
Oreochromis Niloticus ◽  
Heavy Metal Concentration ◽  
World Health Organisation ◽  
World Health ◽  
Human Consumption ◽  
Fish Tissues ◽  
Reservoir Water ◽  
Significant Difference ◽  
Safe Limits

Different sizes of Oreochromis niloticus (Tilapia) were caught using cast net in FUNAAB reservoir. Water samples were also collected and analyzed for five metals: Lead, Chromium, Cadmium, Zinc, and Copper by Atomic Absorption Spectroscopy (AAS). During the experiment, three tissues were compared with the level of metal in water, Intestine, Kidney and Muscles. Generally, lower concentrations of metals were recorded in water than in fish tissues; lower concentration in the tissue of O niloticus except were found in the water which is less than the recommendation for human consumption by World Health Organisation. Lead was found to be the dominant in the intestine of Oreochromis niloticus while Chromium was recorded the least of all the metals. There is a significant difference (P<0.05) in heavy metal concentration in the tissue of O niloticus except for Chromium. Though, the heavy metals of interest were present in a measurable quantities, they are still within safe limits for consumption.

scholarly journals Comparative Assessment and Source Identification of Heavy Metals in Selected Fishpond Water, Sediment and Fish Tissues/Organs in Osun State, Nigeria

2014 ◽  
Vol 4 (7) ◽  
pp. 42-53 ◽  
Author(s):  
Omolara T. Aladesanmi ◽  
Isaac F. Adeniyi ◽  
Ibukun M. Adesiyan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Pond Water ◽  
Fish Muscle ◽  
Atomic Absorption Spectrophotometry ◽  
African Catfish ◽  
Sample Type ◽  
Fish Tissues ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations

Background. The potential toxicity of metals in water may have detrimental effects on the biochemical processes of aquatic organisms, especially fish, which serve as a source of protein in the protein-deficient Nigerian diet. Objective. The present study aimed to determine the concentration of heavy metals in African catfish (C. gariepinus) and investigate the health risk associated with heavy metals in fish. Methods. Heavy metal concentrations in the water samples were determined using atomic absorption spectrophotometry (AAS) and particle induced x-ray emission spectroscopy (PIXE) for sediment and fish tissues/organ samples. Results. Mean nickel (Ni) concentrations differed significantly (p&lt;0.05) by sample type in both the dry and rainy seasons. Similarly, during the rainy season, mean lead (Pb) concentrations in all of the samples from Osogbo differed significantly (p&lt;0.05) by type, with the highest concentration in fish muscle (10.11±1.21 μg/kg) and the lowest Pb concentration in pond water (1.72±0.05 μg/L). Mean chromium (Cr) concentrations of samples from the Ewuru/Rara stream in Yakoyo also differed significantly (p&lt;0.05) by type, with the highest concentration in fish muscle (113.10.±10.07 μg/kg) and the lowest concentration in pond water (3.31±0.22 μg/L). Discussion. Heavy metal concentrations in pond and stream sediment samples revealed transport and deposition processes where trace metals are deposited and incorporated into sediment after entering the aquatic system. Iron (Fe) had the highest concentration levels ranging from (196.21 μg/g – 698.65 μg/g) in the three locations investigated, while Pb levels were the lowest, ranging from (9.05 μg/g – 75.30 μg/g). Conclusions. In general, the concentrations of Cr, copper (Cu) and manganese (Mn) were below standard guidelines, while the concentrations of nickel (Ni) and lead (Pb) were fairly higher than the tolerable limits for water pollution standards.

scholarly journals Assessment of Ectoparasites and Heavy Metal Concentrations in Hemichromis Fasciatus, Liza Falcipinnis and Sarotherodon Galileus

2020 ◽  
Vol 1 (5) ◽  
pp. 12-21
Author(s):  
Ikiriko N ◽  
Robert B ◽  
Amuzie C C
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Fish Species ◽  
Fish Tissues ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Permissible Limits ◽  
Standard Procedures ◽  
Cr Concentration ◽  
Rivers State

Ectoparasites and heavy metal pollution pose health risks to both wild and aquaculture fish species. Here, we examine the ectoparasites of fish species (Hemichromis fasciatus, Liza falcipinnis and Sarotherodon galileus) from Abalama and Ilelema locations of the Buguma Creek, Rivers State, Nigeria, over a period of six months (February to July, 2020). Fish tissues (muscles, gills and gut) were also examined for heavy metals (Cr, Cd and Pb). Parasitological investigations were done following standard procedures, as well as the heavy metal analysis which was done using atomic absorption spectrophotometer after dry ashing-acid digestion. Two ectoparasites were isolated: Zeylanicobdella arugamensis from L. falcipinnis at both locations and Cymothoa exigua from H. fasciatus at Ilelema. In surface water, Cr concentration was <0.003µg/l throughout the study period; Cd concentrations ranged between 0.06µg/l and 0.09µg/l at both locations, while Pb values were 0.29µg/l - 0.64µg/l at Abalama, and 0.56µg/l – 0.71µg/l at Ilelema. These values were within international acceptable standards. In fish tissues, however, Cr values were <0.003µg/g in both locations throughout the study period. At Abalama, Cd ranged between 7.18µg/g and 8.15µg/g, and Pb between 72.83µg/g and 92.23µg/g. At Ilelema, Cd concentrations were between 7.56µg/g and 8.67µg/g while Pb values ranged between 78.32µg/g and 92.88µg/g. Differences in heavy metal concentrations in both water and fish tissues between both locations were not statistically significant (p>0.05). All fish species and tissues bioaccumulated appreciable concentrations of the heavy metals. Cr in fish tissues was within permissible limits, but all Cd and Pb values exceeded international permissible limits.

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