scholarly journals Seasonal Variations of Some Heavy Metals in Water, Sediments and Fish Samples Collected from the River Nile, Egypt

2012 ◽  
Vol 6 (5) ◽  
pp. 321-328 ◽  
Author(s):  
A.G.M. Osman ◽  
K.Y. Abuel-Fadl ◽  
A.M. Elbtar ◽  
M.A.M. Taha
Keyword(s):  
Heavy Metals ◽  
Seasonal Variations ◽  
River Nile ◽  
Fish Samples

Assessment of seasonal variations and human health risks due to heavy metals in water, soils and food crops using multi-indices approach

2021 ◽  
Vol 80 (11) ◽  
Author(s):  
Salwinder Singh Dhaliwal ◽  
Raj Setia ◽  
Vinod Kumar ◽  
Tapan Ghosh ◽  
Sagar Taneja ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Human Health ◽  
Health Risks ◽  
Seasonal Variations ◽  
Food Crops ◽  
Human Health Risks

PHYSICO-CHEMICAL AND SOME HEAVY METALS CONCENTRATION ANALYSES ON THREE COMMON SPECIES OF FISH IN TUNGAN KAWO RESERVOIR KONTAGORA, NIGER STATE, NIGERIA

2021 ◽  
Vol 5 (1) ◽  
pp. 223-232
Author(s):  
Mohammed Jr. Kinta ◽  
A. V. Ayanwale ◽  
U. N. Keke ◽  
Y. I. Auta ◽  
B. S. Adama ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Drinking Water ◽  
Oxygen Demand ◽  
Aquatic Organisms ◽  
Common Species ◽  
Human Consumption ◽  
Long Term Effects ◽  
Aquatic Life ◽  
Physico Chemical ◽  
Fish Samples

Developing countries like Nigeria are faced with increased in generation of domestic, industrial and agricultural wastes, with a large percentage moving. This study evaluates the physico-chemical and some heavy metals concentration in three common species of fish from Tungan Kawo reservoir Kontagora, Nigeria; using standard methods between (July 2018 – February 2019); at four different sampling stations of human activities on the water. Five heavy metals were evaluated (Lead, Copper, Manganese, Iron and Chromium) in the fish samples. Phosphate (0.4 – 2.5) mg/L, Nitrate (3.2 – 7.5) mg/L, Temperature (27 – 32.4) 0C, Dissolved Oxygen (2.4 – 5.2 mg/L), Conductivity (81 – 125 µS/cm), Biochemical Oxygen Demand (1.9 – 4.4 mg/L), Alkalinity (mg/L) and Total Dissolved Solids (117 – 198) ppm were within the standard for drinking water and survival of fish.  However, the pH (6.3 – 9.8) was above the standard for NIS and WHO drinking water but can support aquatic life. Iron (0.64 ± 0.072 mg/kg) was the most highly concentrated in Synodontis clarias while lead (0.01 ± 0.013 mg/kg) was the lowest in Oreochromis niloticus and Coptidon zillii (formerly Tilapia zillii. This current finding indicates that the water is safe for both aquatic life and domestic purpose but not suitable for direct human consumption without being properly treated. However, there is the need for regular monitoring of the heavy metals load in this water body and the aquatic organisms because of the long term effects

Seasonal variations of heavy metals content in mussels (Mytilus galloprovincialis) from Cala Iris offshore (Northern Morocco)

2018 ◽  
Vol 137 ◽  
pp. 688-694 ◽  
Author(s):  
Ghizlane Azizi ◽  
Mostafa Layachi ◽  
Mustapha Akodad ◽  
David R. Yáñez-Ruiz ◽  
Antonio Ignacio Martín-García ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Seasonal Variations ◽  
Mytilus Galloprovincialis

Organic and metallic pollutants in water treatment and natural wetlands: a review

2012 ◽  
Vol 65 (1) ◽  
pp. 76-99 ◽  
Author(s):  
K. Haarstad ◽  
H. J. Bavor ◽  
T. Mæhlum
Keyword(s):  
Heavy Metals ◽  
Aquatic Plants ◽  
Metal Uptake ◽  
High Capacity ◽  
Treatment Wetlands ◽  
The European Union ◽  
Toxic Heavy Metals ◽  
Limit Values ◽  
Fish Samples ◽  
Other Substances

A literature review shows that more than 500 compounds occur in wetlands, and also that wetlands are suitable for removing these compounds. There are, however, obvious pitfalls for treatment wetlands, the most important being the maintenance of the hydraulic capacity and the detention time. Treatment wetlands should have an adapted design to target specific compounds. Aquatic plants and soils are suitable for wastewater treatment with a high capacity of removing nutrients and other substances through uptake, sorption and microbiological degradation. The heavy metals Cd, Cu, Fe, Ni and Pb were found to exceed limit values. The studies revealed high values of phenol and SO4. No samples showed concentrations in sediments exceeding limit values, but fish samples showed concentrations of Hg exceeding the limit for fish sold in the European Union (EU). The main route of metal uptake in aquatic plants was through the roots in emergent and surface floating plants, whereas in submerged plants roots and leaves take part in removing heavy metals and nutrients. Submerged rooted plants have metal uptake potential from water as well as sediments, whereas rootless plants extracted metals rapidly only from water. Caution is needed about the use of SSF CWs (subsurface flow constructed wetlands) for the treatment of metal-contaminated industrial wastewater as metals are shifted to another environmental compartment, and stable redox conditions are required to ensure long-term efficiency. Mercury is one of the most toxic heavy metals and wetlands have been shown to be a source of methylmercury. Methyl Hg concentrations are typically approximately 15% of Hgt (total mercury). In wetlands polycyclic aromatic hydrocarbons (PAH), bisphenol A, BTEX, hydrocarbons including diesel range organics, glycol, dichlorodiphenyltrichloroethane (DDT), polychlorinated biphenyls (PCB), cyanide, benzene, chlorophenols and formaldehyde were found to exceed limit values. In sediments only PAH and PCB were found exceeding limit values. The pesticides found above limit values were atrazine, simazine, terbutylazine, metolachlor, mecoprop, endosulfan, chlorfenvinphos and diuron. There are few water quality limit values of these compounds, except for some well-known endocrine disrupters such as nonylphenol, phtalates, etc.

scholarly journals Keban Baraj Gölü Örencik Mevkiinden (Elazığ) Yakalanan Capoeta trutta’nın Kas Dokusundaki Bazı Ağır Metal Düzeylerinin Karşılaştırılması

2021 ◽  
Vol 9 (7) ◽  
pp. 1250-1257
Author(s):  
Özgür Canpolat ◽  
Metin Çalta
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Muscle Tissue ◽  
Fish Species ◽  
Human Consumption ◽  
Potential Health ◽  
Fish Samples ◽  
Metal Levels ◽  
Biological Aspects ◽  
The Relationship

Keban Dam Lake is the second largest dam lake in Turkey. In addition, it has the feature of being one of the most important dam lakes in our country in terms of both aquaculture potential and electricity generation. In this study, fish samples belong to Capoeta trutta caught from Örencik region of Keban Dam Lake were used. The concentrations of some heavy metals (copper, iron, zinc, chromium, nickel, cadmium, arsenic and mercury) in muscle of Capoeta trutta and the potential health risk from consumption of this fish species were examined. In addidion, the relationship between the heavy metal levels and some biological aspects of fish (weight, length and sex) were determined. As a result of the study, it was determined that the most and the least accumulated heavy metals in the muscle tissue of Capoeta trutta were zinc and cadmium respectively. The concentration of heavy metals showed differences according to weight, length and sex of fish. The results were found indicated that heavy metal levels in the muscle tissue of Capoeta trutta are below the tolerable values recommended by EPA, WHO and FAO. Therefore, there is not any risk for human consumption of this fish species.

scholarly journals Seasonal Variations, Source Apportionment, and Health Risk Assessment of Heavy Metals in PM2.5 in Ningbo, China

2019 ◽  
Vol 19 (9) ◽  
pp. 2083-2092 ◽  
Author(s):  
Yue Wu ◽  
Beibei Lu ◽  
Xinlei Zhu ◽  
Aihong Wang ◽  
Meng Yang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Source Apportionment ◽  
Health Risk Assessment ◽  
Seasonal Variations

Seasonal variations of heavy metals in central Greenland snow deposited from 1991 to 1995

2003 ◽  
Vol 5 (2) ◽  
pp. 328-335 ◽  
Author(s):  
Carlo Barbante ◽  
Claude Boutron ◽  
Christine Morel ◽  
Christophe Ferrari ◽  
Jean Luc Jaffrezo ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Seasonal Variations
Sign in / Sign up

Export Citation Format

Share Document