Impact of heavy metals on the food web in the Mediterranean lagoon, Lake Burullus, Egypt

2020 ◽  
Vol 49 (3) ◽  
pp. 215-229
Author(s):  
Mahmoud H. Hegab ◽  
Nasr M. Ahmed ◽  
Shadia M. Kadry ◽  
Radwa A. ElSayed ◽  
Mohamed E. Goher
Keyword(s):  
Heavy Metals ◽  
Lake Water ◽  
Dry Weight ◽  
Human Consumption ◽  
Fish Muscles ◽  
Fish Samples ◽  
Accumulation Of Metals ◽  
Lake Burullus ◽  
The Impact ◽  
The Relationship

AbstractResearch on the impact of heavy metals and their accumulation in ecosystem elements of Lake Burullus is still scarce. Therefore, this study focuses on the relationship between the levels of heavy metals in the lake water, plankton communities and Nile tilapia (Oreochromis niloticus). The mean annual concentrations of Fe, Zn, Cu, Mn, Pb and Cd in water and fish samples were 527.8, 366.7, 162.6, 137.3, 119.8 and 3.6 μg l−1, and 70.8, 43.6, 8.05, 1.2, 0.14 and 0.045 μg g−1 dry weight (d.w.), respectively. The study demonstrated the relationship between the accumulation of metals in fish muscles and their levels in the lake water (p < 0.05; r = 0.7–0.9), with the metal content in O. niloticus muscles being mostly below the permissible limits. The obtained results showed that the levels of the metals in the lake water are not correlated with phytoplankton and zooplankton, and their groups, except copper and zinc, are negatively correlated with phytoplankton (r = −0.45 and −0.58, respectively). The study concluded that the concentrations of the analyzed metals in Lake Burullus did not reach the effective levels that would have a significant impact on the distribution of phytoplankton and zooplankton, or a hazardous effect on O. niloticus and its safety for human consumption.

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.

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

scholarly journals Cadmium, Copper, Lead, and Zinc Contents of Fish Marketed in NW Mexico

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Martín G. Frías-Espericueta ◽  
Francia K. G. Zamora-Sarabia ◽  
J. Isidro Osuna-López ◽  
María D. Muy-Rangel ◽  
Werner Rubio-Carrasco ◽  
...  
Keyword(s):  
Dry Weight ◽  
Fish Muscle ◽  
Atomic Absorption Spectrophotometry ◽  
Human Consumption ◽  
Fish Muscles ◽  
Absorption Spectrophotometry ◽  
Nw Mexico ◽  
Lead And Zinc ◽  
The Mean ◽  
Copper Lead

To assess if they were within the safety limits for human consumption, the Cd, Cu, Pb, and Zn contents of fish muscles, bought from separate stalls of the fish markets of nine cities of NW Mexico, were determined by atomic absorption spectrophotometry. Considering all fish and markets, the mean contents were Zn:23.23±5.83, Cu:1.72±0.63, Cd:0.27±0.07, and Pb:0.09±0.04 µg/g (dry weight). Cu, Zn, and Pb did not reach levels of concern for human consumption, but the high Cd values determined in Mazatlán (Mugil cephalus:0.48±0.15;Diapterusspp.:0.57±0.33;Lutjanusspp.:0.72±0.12; small shark:0.87±0.19 µg/g dry weight) indicate that this was the only metal of concern for human health because the daily individual consumption of fish muscle to reach the PTDI would be within 0.27 and 0.41 kg.

scholarly journals Levels of Heavy Metals in Different Tissues of Pigeon (Columba livia) of Bangladesh for Safety Assessment for Human Consumption

2013 ◽  
Vol 16 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Aleya Begum ◽  
Sabrina Sehrin
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Safety Assessment ◽  
Dry Weight ◽  
Columba Livia ◽  
Pharmaceutical Journal ◽  
Human Consumption ◽  
Storage Site ◽  
Heavy Metal Concentrations ◽  
Different Tissues

Heavy metal pollution was reported in commercially valuable and edible pigeon (Columba livia, Gmelin 1789) of Bangladesh. The concentrations of As, Pb, Cd, Cr, Zn, and Cu were investigated in the muscle, intestine, kidney, gizzard and liver. For this 60 C. livia were selected from five locations to assess the degree of pollution by heavy metals in pigeon. Significant differences in heavy metal concentrations were observed among different tissues, but not among the locations. The ranges of the measured concentrations (?g/g dry weight) in the tissues of C. livia were as follows: arsenic: (0.01–0.04), (0.02–0.04), (0.02–0.08), (0.02–0.04) and (0.03–0.07); lead: (0.21–0.56), (0.07–1.64), (0.62–1.97), (0.41–0.79) and (1.47–5.75); cadmium: (0.01–-0.05), (0.13–0.97), (0.53–1.85), (0.32– 0.78) and (0.22–2.41); chromium: (0.25–1.93), (1.18–5.90), (1.59–4.40), (1.15–1.65) and (1.38–8.36); zinc: (73.22–256.56), (95.62–130.75), (19.87–67.18), (108.99–124.77) and (159.80–280.76); copper: (3.44–7.64), (5.30–17.50), (8.72–16.55), (1.19–34.42) and (26.09–43.60) in the muscle, intestine, kidney, gizzard, and liver, respectively. This research showed that the liver appeared to be the main storage site of heavy metals, while the muscle had the lowest levels of the analyzed metals. The concentrations of metal in the muscles were not found to exceed the acceptable level for human consumption. DOI: http://dx.doi.org/10.3329/bpj.v16i1.14499 Bangladesh Pharmaceutical Journal 16(1): 81-87, 2013

scholarly journals An Assessment of the Bivalve Perna viridis, as an Indicator of Heavy Metal Contamination in Paradise Point of Karachi, Pakistan

2016 ◽  
Vol 59 (3) ◽  
pp. 164-171
Author(s):  
Rashida Qari ◽  
Olufemi Ajiboye ◽  
Saima Imran ◽  
Abdul Rahim Afridi
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Contamination ◽  
Soft Tissues ◽  
Heavy Metal Contamination ◽  
Human Consumption ◽  
Perna Viridis ◽  
High Accumulation ◽  
Accumulation Of Metals ◽  
Mn Concentrations

The edible bivalves Perna viridis (green mussel), (n = 100) were analysed for their total Hg,Pb, Cu, Ni, Zn, Co, Fe, Cr, Cd, and Mn concentrations to indicate heavy metal contamination in ParadisePoint of Karachi coast using atomic absorption spectrophotometer. There are large seasonal variations inthe metal concentrations of Mn (0.025-0.67 µg/g), Fe (0.055-7.740 µg/g), Ni (0.004-0.52 µg/g), Hg (0.0001-0.004 µg/g), Zn (0.04-3.32 µg/g), Cu (0.008-1.66 µg/g), Pb (0.022-2.43 µg/g), Co (0.01-0.044 µg/g), Cd(0.04-0.88 µg/g) and Cr (0.13-1.20 µg/g) recorded in bodies/soft tissues of P. viridis obtained in the samplesof the year 1993 and 2012 at the Paradise Point of Karachi coast. The results of heavy metals are in thefollowing descending order of concentration in the samples collected in the year 1993: Fe>Cr>Zn>Mn>Pb>Cd>Cu>Ni>Co>Hg, while Fe>Zn>Pb>Cu>Cr>Cd>Mn>Ni>Co>Hg order was recorded in samplescollected in the year 2012. The high accumulation of metals was found mostly in the samples collectedin the year 2012 when compared with the samples of the year 1993. This is an indication that the areaunder study showed signs of being exposed to significant levels of heavy metal pollution due to directdischarge of industrial and domestic wastes along the coast. The concentrations of these heavy metals werelower than the permissible limits for human consumption. However, if this pollution persists, it can proveto be very detrimental in future.

scholarly journals Evaluation of Water Quality on TNF- α and IL- 1 Immune Genes in Oreochromis Niloticus Fish at El Manzala Lake in Egypt

2020 ◽  
Vol 9 (4) ◽  
pp. 1695-1704
Keyword(s):  
Water Quality ◽  
Lake Water ◽  
Nile Tilapia ◽  
Interleukin 1 ◽  
Total Bacterial Count ◽  
Human Consumption ◽  
Lake Water Quality ◽  
Immune Genes ◽  
Tnf Α ◽  
Fish Samples

Lake Manzala is known to be from the most significant sources of inexpensive different fish species for human consumption in Egypt. The Lake receives pollution from various sources; domestic wastewater, industrial wastewater, and agricultural drainage directly without any treatments, which lead to many environmental disorders. The following research was conducted for lake water quality evaluation and how it impacts the expression of Tumor necrosis factor- α (TNF- α) and Interleukin-1 (IL- 1) immune genes. Sampling was done seasonally from October 2015 to September 2016, where water and fish samples were collected from 4 locations in El Manzala Lake after mixing with Bahr El Baqr drain (sampling points were 4 km apart from each other). Average values of dissolved oxygen, chemical oxygen, and biological oxygen demand were 6.7 mg O2/l, 139.4 mg O2/l, 92.8 mg O2/l, respectively. For the Nitrogen group, the average concentration of ammonia, nitrite, and nitrate was 0.7 mg/l, 0.38 mg/l, and 0.38 mg/l, respectively. The average records of total bacterial count and total and fecal coliform suggesting high loads of contaminants, particularly in sampling sites close to Bahr El Baqr drain. The relative occurrence of cyanobacteria in water samples was influenced by increasing lake water temperature. The expression of the immune genes for TNF- α and IL- 1 in Nile Tilapia fish liver was confirmed by RT-PCR. The results showed up-regulation of these genes in the liver of Nile Tilapia fish, especially in warm seasons (summer, late summer). TNF-α and IL- 1 level in Nile Tilapia fish could be used as early diagnostic indicators to different environmental events and also are helpful and reliable bioindicators in estimating pollutants of the aquatic environment. High levels of pollution in El Manzala Lake were recorded in this study that may proceed with health risks to a human. Therefore, the Lake needs proper policies to protect and preserve its ecological integrity and biodiversity.

scholarly journals The Role of Heavy Metals in Plant Response to Biotic Stress

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2320 ◽  
Author(s):  
Iwona Morkunas ◽  
Agnieszka Woźniak ◽  
Van Mai ◽  
Renata Rucińska-Sobkowiak ◽  
Philippe Jeandet
Keyword(s):  
Heavy Metals ◽  
Metal Ion ◽  
Ion Homeostasis ◽  
Pathogenic Fungi ◽  
Growth Stimulation ◽  
Stress Factors ◽  
Ecological Communities ◽  
The Impact ◽  
The Relationship

The present review discusses the impact of heavy metals on the growth of plants at different concentrations, paying particular attention to the hormesis effect. Within the past decade, study of the hormesis phenomenon has generated considerable interest because it was considered not only in the framework of plant growth stimulation but also as an adaptive response of plants to a low level of stress which in turn can play an important role in their responses to other stress factors. In this review, we focused on the defence mechanisms of plants as a response to different metal ion doses and during the crosstalk between metal ions and biotic stressors such as insects and pathogenic fungi. Issues relating to metal ion acquisition and ion homeostasis that may be essential for the survival of plants, pathogens and herbivores competing in the same environment were highlighted. Besides, the influence of heavy metals on insects, especially aphids and pathogenic fungi, was shown. Our intention was also to shed light on the relationship between heavy metals deposition in the environment and ecological communities formed under a strong selective pressure.

scholarly journals Heavy Metals Health Risk Index (HRI) in Human Consumption of Whole Fish and Water from Some Selected Dams in Katsina State Nigeria

2018 ◽  
pp. 1-11
Author(s):  
A. I. Yaradua ◽  
A. J. Alhassan ◽  
A. U. Kurfi ◽  
A. Nasir ◽  
A. Idi ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Water Samples ◽  
Risk Index ◽  
Clarias Gariepinus ◽  
Permissible Limit ◽  
Human Consumption ◽  
Pollution Indices ◽  
Fish Samples ◽  
Adverse Implication

This study was conducted in the year 2016 to determine the heavy metal concentrations in whole fish (Clarias gariepinus) samples and water obtained from some selected Dams (Ajiwa, Zobe and Dannakola) in Katsina state Nigeria. The objectives were mainly to detect the presence of heavy metals in whole fish and water from some selected Dams in the study area, compare the concentration of heavy metals in samples from the selected Dams concerning the permissible limits specified by WHO/FAO and USEPA Standards. Eight (8) water samples were collected at 8 random points within approximately 1000 meters on each extremity and median parts of the selected dams. Fish (Clarias gariepinus) was sampled using standard methods (AOAC, 1990). The fish and water samples were collected from Ajiwa, Zobe and Dannakola Dams of Katsina state Nigeria. Nine adult fish samples, three each from Ajiwa Dam, and Dannakola were procured from fishermen. Analysis of the concentration of these heavy metals; Cr, Cd, Fe, Ni, Mn, Pb and Zn was conducted by the use of AAS (by Atomic Absorption Spectrophotometry) method. The results showed wide mean concentrations of the heavy metals in the selected dams water; iron recorded the highest level (range 0.4596 μg / g - 2.9510 μg / g) and lead (range 0.0031 μg / g -0.0323 μg / g) recorded the lowest level, for the fish samples the mean concentrations of the same heavy metals showed iron recording the highest level (range 1.8847 μg / g -10.0474 μg / g) and cadmium (0.0130 μg / g -0.0138 μg / g) recording the lowest level. Results from this study indicate that with the exception of the heavy metals Cd, Fe and Pb (from Zobe dam sample) values of  Mn, Pb (Ajiwa and Dannakola dams samples) and Zn in the water samples were generally lower than the USEPA, WHO/FAO maximum permissive limits while Ni was below the detection level (BDL) in all the samples. the results of this study showed that apart from Mn (PI range = 0.02-0.09), Zn (PI range = 0.01-0.03) and Pb for sampled water from Dannakola dam (PI= 0.77) which have no effect on the water quality, all the other heavy metals have pollution indices which suggest slightly, to moderate and strong effect on the selected dams water quality consideration for human and aquatic health. The metal indices also showed that all the heavy metals are at the threshold level (MI > 1) except for the heavy metals Mn and Zn in sampled waters from all the selected dams, Pb for water samples from Ajiwa and Dannakola dams and Cr for Zobe dam water sample. With the exception of the heavy metals Pb, Ni and Cr that were BDL in the fish samples the levels of the heavy metals all fall below the USEPA, WHO/FAO permissible limit for fish. The results from the present study suggests that the selected dams water quality is threatened by heavy metals pollution and may have adverse implication for drinking and aquatic health, in the fish samples the concentration levels of the heavy metals all fall below the USEPA, WHO/FAO permissible limit for fish.  However, the fish’s bio-accumulation factors of the metals suggest that they have high potentials to bio-accumulate some of the heavy metals to high levels and this may have adverse implication for human consumption.

IMPACTS OF URBAN DEVELOPMENT ON AN OXBOW LAKE IN THE AMAZON REGION: LANDSCAPE AND GEOCHEMICAL EVIDENCE

2020 ◽  
Vol 7 (2020) (2) ◽  
pp. 1-12
Author(s):  
Marcondes Costa ◽  
◽  
Luiz Carvalho ◽  
Patricia Pereira ◽  
Glayce Valente ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Urban Development ◽  
Amazon Basin ◽  
Urban Expansion ◽  
Oxbow Lake ◽  
Human Consumption ◽  
Lake Area ◽  
Fish Farms ◽  
Muddy Water ◽  
The Impact

Amapá Lake is an abandoned meander of the Acre River, the margins of which are occupied by agricultural settlements, smallholdings, fish farms and dirt roads. This paper discusses the impact of this occupation on the lake area based on field data and physical-chemical and elementary chemical analyses of the lake and river waters. The strong physical changes in the lake landscape have impacted the quality of its water. During the dry season (low water), when the temperature of the water reaches 30-34ºC, there is a proliferation of green algae and in the area affected by fish farms and smallholdings there is an increase in total dissolved solids, electrical conductivity, and transparency, while turbidity and total suspended solids become more concentrated during the flood season. The anthropogenic impact is also indicated by the higher levels of ammonia, chlorides, bromides, and phosphates in the water. However, the concentrations of dissolved metal ions are all consistent with those found in the Acre River, and other muddy water lakes and rivers in the Amazon basin, reflecting the mineralogy of the suspended material. The concentrations of most heavy metals (Pb, Cu, (Zn), Cd and Hg) are below 0.01 mg L-1, while that of Hg (0.006 mg L-1) is above the recommended limits for human consumption. Overall, the results of the study indicate that Amapá Lake is suffering ongoing impacts (physical and chemical) from urban development, which are mitigated by the periodic flooding of the river. Key words: Urban expansion, Environmental impacts, Waters, Heavy metals.

scholarly journals Distribution of some heavy metals in the sediments of Tigris river from sewage of Thermal Electrical Station at Baiji City in Salah-aldin Governorate-Iraq

2020 ◽  
Vol 25 (1) ◽  
pp. 52
Author(s):  
Hiba Abd albast Hashim Alshaeghli1 ◽  
Riadh Abas Abdul Jabar ◽  
Hussain Hassan Kharnoob2
Keyword(s):  
Heavy Metals ◽  
Sequential Extraction ◽  
Metal Ion ◽  
Metal Layer ◽  
River Sediments ◽  
Dry Weight ◽  
Organic Layer ◽  
Lead And Cadmium ◽  
Tigris River ◽  
The Impact

This study was conducted to determine four  heavy metals including copper, zinc, lead and cadmium in the sediments of the Tigris river for a distance of 3,500 km for the time period autumn2012 – summer 2013.This is the first time that such a study carried out by the river sediments so studies on the Tigris river about sequential extraction to compare them with the results of the research not available, total concentrations recorded of  Cu )11.23-12.1)µg/g, Zn (39.6-41.03) µg/g, Pb (115.82-117.34) µg/g,Cd (4.1-4.34) µg/g dry weight, the distribution in the sediment layers, exchangeable metal ion recorded of Cu (0.42-0.44) µg/g, Zn (0.32-0.33) µg/g, Pb (0.22-0.25) µg/g, Cd (0.15-0.17) µg/g dry weight, and layer of carbonate bound of Cu( 1.6-1.63) µg/g ,Zn (4.47-6.71) µg/g, Pb (0.2-0.22) µg/g , Cd (1.44-2.17) µg/g dry weight, and the metal layer of Cu (1.26-1.41) µg/g, Zn  (15.84-17.07) µg/g, Pb  (46.38-49.46) µg/g, Cd  (1.9-2.17) µg/g dry weight, concentration of organic layer Cu (7.85-8.67) µg/g, Zn (17.63-17.96) µg/g, Pb (68.57-67.48) µg/g, Cd (0.58-0.86) µg/g dry weight. The arrangement of total concentration Pb>Zn>Cu>Cd (4,42-12,09-41,69-116,88) µg/g dry weight. Distribution of Cu organic layer> carbonate bound> metal layer> exchangeable metal ion (8,41-1,78-1.52-0.35) µg/g dry weight, Zn metal layer> organic layer> carbonate bound> exchangeable metal ion (18.99-17,58-5.52-0.29) µg/g dry weight, Pb organic layer>metal layer> exchangeable metal ion> carbonate bound (66.42-49.81-0.22-0.2) µg/g dry weight, Cd metal layer> carbonate bound> organic layer> exchangeable metal ion (2.02-1.87-0.91-0.18) µg/g dry weight .The high concentration recorded in four station, these results indicated that the possibility of using sequential extraction for the detection of the distribution of metals and determine the impact of diversity through release them to the aquatic environment, all concentration mentioned are rate they aren’t single value.   http://dx.doi.org/10.25130/tjps.25.2020.010

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