Analysis of metal concentration levels in water, sediment and fish tissues from Toledo municipal lake by applying SR-TXRF technique

2011 ◽  
Vol 63 (7) ◽  
pp. 1506-1512 ◽  
Author(s):  
F. R. Espinoza-Quiñones ◽  
A. N. Módenes ◽  
S. M. Palácio ◽  
E. K. Lorenz ◽  
A. P. Oliveira
Keyword(s):  
Certified Reference Materials ◽  
Fish Tissue ◽  
Contaminated Water ◽  
Metal Analysis ◽  
Fish Tissues ◽  
Water And Sediment ◽  
Fish Samples ◽  
Maximum Tolerance ◽  
Municipal Lake ◽  
Concentration Levels

The main objective of this study was to evaluate the metal content in water and sediment from the Toledo municipal lake, as well as the concentration levels of heavy metals in muscle and liver of four fish species. A digestion procedure was performed in all fish samples. Metal analysis was performed by using the Synchrotron Radiation X-ray Fluorescence technique. The accuracy and validity of the measurements were determined by analysis of certified reference materials. The highest Cr, Cu and Se concentration levels above the maximum tolerance limit according to the Brazilian norms in fish tissue could be associated with the metal uptake and accumulation due to the direct contact with contaminated water and sediment.

scholarly journals Cyanobacteria, cyanotoxins, and their histopathological effects on fish tissues in Fehérvárcsurgó reservoir, Hungary

2021 ◽  
Vol 193 (9) ◽  
Author(s):  
Damjana Drobac Backović ◽  
Nada Tokodi ◽  
Zoran Marinović ◽  
Jelena Lujić ◽  
Tamara Dulić ◽  
...  
Keyword(s):  
Adverse Effects ◽  
Fish Tissue ◽  
Freshwater Ecosystems ◽  
Abramis Brama ◽  
Histopathological Changes ◽  
Fish Tissues ◽  
The World ◽  
Encoding Gene ◽  
Microcystis Wesenbergii ◽  
Histopathological Effects

AbstractCyanobacteria are important members of lake plankton, but they have the ability to form blooms and produce cyanotoxins and thus cause a number of adverse effects. Freshwater ecosystems around the world have been investigated for the distribution of cyanobacteria and their toxins and the effects they have on the ecosystems. Similar research was performed on the Fehérvárcsurgó reservoir in Hungary during 2018. Cyanobacteria were present and blooming, and the highest abundance was recorded in July (2,822,000 cells/mL). The species present were Aphanizomenon flos-aquae, Microcystis flos-aquae, Microcystis wesenbergii, Cuspidothrix issatschenkoi, Dolichospermum flos-aquae, and Snowella litoralis. In July and September, the microcystin encoding gene mcyE and the saxitoxin encoding gene sxtG were amplified in the biomass samples. While a low concentration of microcystin-RR was found in one water sample from July, analyses of Abramis brama and Carassius gibelio caught from the reservoir did not show the presence of the investigated microcystins in the fish tissue. However, several histopathological changes, predominantly in gills and kidneys, were observed in the fish, and the damage was more severe during May and especially July, which coincides with the increase in cyanobacterial biomass during the summer months. Cyanobacteria may thus have adverse effects in this ecosystem.

scholarly journals Removal of Cyanide-Contaminated Water by Vetiver Grasses

2015 ◽  
Vol 9 (13) ◽  
pp. 252 ◽  
Author(s):  
Piyada Wachirawongsakorn ◽  
Tongsai Jamnongkan ◽  
Mohd Talib Latif
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Sri Lanka ◽  
Removal Efficiency ◽  
Water Samples ◽  
Low Cost ◽  
Contaminated Water ◽  
Vetiver Grass ◽  
Vetiveria Zizanioides ◽  
Concentration Levels

<p>Vetiver grass and it usages have been widely investigated in many researches as the preferred plant species due to its known efficiency, low cost, the ease of availability and spread. This research aimed to use four different vetiver grass (<em>Vetiveria zizanioides</em>) ecotypes to remove cyanide (CN<sup>-</sup>)-contaminated water for improve its quality. Growth capability, tolerance and removal efficiency were evaluated. The results showed that the vetiver grass had a 100% survival rate for one month after planting. Songkhlar3 had the longest leaves, followed by Surat-Thani, Sri Lanka and Monto, respectively. Root lengths of all ecotypes showed no significant differences (p ≤ 0.05). All vetiver grass ecotypes could potentially purify CN<sup>-</sup>-contaminated water at lower concentrations of ≤ 35 mg CN<sup>-</sup>/L. The Monto ecotype had the highest CN<sup>-</sup> removal efficiency at all CN<sup>-</sup> concentration levels, showing 100% CN<sup>-</sup> removal from the 5-45 mg CN<sup>-</sup>/L contaminated water samples within 2-5 weeks growth. The tolerance of vetiver grass to CN<sup>-</sup> was a more important factor than growth rate when selecting a vetiver grass ecotype for CN<sup>-</sup> phytoremediation.</p>

Distribution of Bacteria Load in Fish Tissues, Pond Water and Sediment in Oyo State, Nigeria

2016 ◽  
Vol 51 (1) ◽  
pp. 1
Author(s):  
Ibrahim Adeshina ◽  
Samuel Umma ◽  
O Adesanmi ◽  
YA Adewale
Keyword(s):  
Pond Water ◽  
Fish Tissues ◽  
Water And Sediment

scholarly journals Effect of polluted water on soil and plant contamination by heavy metals in El-Mahla El-Kobra, Egypt

Solid Earth ◽  
2016 ◽  
Vol 7 (2) ◽  
pp. 703-711 ◽  
Author(s):  
Esawy Kasem Mahmoud ◽  
Adel Mohamed Ghoneim
Keyword(s):  
Heavy Metals ◽  
Cynodon Dactylon ◽  
Oxygen Demand ◽  
Polluted Water ◽  
Contaminated Water ◽  
Water And Sediment ◽  
Bioaccumulation Coefficient ◽  
The Mean ◽  
Very High ◽  
Irrigated Soils

Abstract. The discharge of untreated waste water in Zefta drain and drain no. 5 is becoming a problem for many farmers in the El-Mahla El-Kobra area, Egypt. The discharged water contains high levels of contaminants considered hazardous to the ecosystem. Some plants, soil, water, and sediment samples were collected from the El-Mahla El-Kobra area to evaluate the contamination by heavy metals. The results showed that the heavy metals, pH, sodium adsorption ratio (SAR), biochemical oxygen demand (BOD), and chemical oxygen demand (COD) in the water of Zefta drain and drain no. 5 exceeded permissible limits for irrigation. In rice and maize shoots grown in soils irrigated by contaminated water from Zefta drain and drain no. 5, the bioaccumulation factors for Cd, Pb, Zn, Cu, and Mn were higher than 1.0. The heavy metals content of irrigated soils from Zefta drain and drain no. 5 exceeded the upper limit of background heavy metals. In this study, the mean contaminant factor values of the drain no. 5 sediments revealed that Zn, Mn, Cu, Cd, Pb, and Ni > 6, indicating very high contamination. The bioaccumulation coefficient values of Cynodon dactylon, Phragmites australis, and Typha domingensis aquatic plants growing in Zefta drain are high. These species can be considered as hyperaccumulators for the decontamination of contaminated water.

Impact of Water Quality on Fish Production Based on Egyptian and Israeli Practices

1989 ◽  
Vol 21 (3) ◽  
pp. 27-33 ◽  
Author(s):  
B. Fattal ◽  
A. M. Eisawy ◽  
A. Dotan ◽  
H. I. Shuval ◽  
K. H. Mancy
Keyword(s):  
Bacterial Count ◽  
Fish Tissue ◽  
Fish Stock ◽  
Fish Production ◽  
Fish Ponds ◽  
Negative Effects ◽  
Fish Tissues ◽  
Collaborative Project ◽  
Microbiological Assays ◽  
Polluted Waters

This study deals with an Israel-Egypt-USA collaborative project on the health risks and technological options for fish grown in polluted waters. The fish were grown in aquaculture either with wastewater–enrichment or without. The study included one effluent polishing pond, two fish ponds and two water reservoirs. The fish stock in the ponds and reservoirs consisted mainly of tilapia (usually hybrids of Sarotherodonniloticus × S. aureus). The results of Israeli and Egyptian studies indicated that, on the average, the yields for wastewater aquaculture were higher than the yields without wastewater. However the Egyptian study showed that in areas with inadequate dilution of wastewater by freshwater near to a sewage outfall, there were negative effects on fish production. Microbiological assays (E.coli and Aeromonas) of water and fish tissues, indicate that the Aeromonas counts were high in the water as well as in the fish tissue. The bacterial count was higher in the digestive tract than in the water in which the fish were grown. In most cases only Aeromonas was detected in muscles. There was no difference between wastewater-enriched and nonwastewater aquacultures for both E.coli and Aeromonas concentrations in fish tissues.

Study of organochlorine pesticide residues in water, sediment and fish tissue in Lake Ohrid (Macedonia/Albania)

2011 ◽  
Vol 30 (2) ◽  
pp. 163 ◽  
Author(s):  
Elizabeta Veljanoska-Sarafiloska ◽  
Momčula Jordanoski ◽  
Trajče Stafilov ◽  
Marina Stefova
Keyword(s):  
Organochlorine Pesticides ◽  
Fish Tissue ◽  
Fish Biomass ◽  
Lake Ohrid ◽  
Fish Samples ◽  
Organochlorine Pesticide Residues ◽  
Potential Sources ◽  
Contamination Levels ◽  
River Mouths

A systematic study has been performed for determination of a range of organochlorine pesticides in the water, sediments and fish samples in the Macedonian part of the Lake Ohrid and its larger tributaries. The obtained results give an overview of the contamination levels of these problematic compounds (i) at their potential sources in the river mouths, (ii) in the potentially affected, species-rich littoral section of the lake, and (iii) in the muscle tissue of one selected fish species Barbus peloponnesius, Valenciennes, collected near the rivers’ deltas. The organochlorine pesticides measured in all three matrixes were: γ-HCH, ΣHCH (sum of α-isomer, β-isomer and δ-isomer), endosulfan (total of α and β endosulfan), DDT metabolites (p,p’-DDE, p,p’-DDD and p,p’-DDT). The range of the observed concentrations for p,p’-DDT was between 0.006 μg l–1 in the water samples from Daljan and St. Naum and 0.036 μg l–1 in the water from the Koselska River. The values for p,p’-DDT measured in dry sediment ranged from 0.121 μg kg–1 in the sample from St. Naum to 1.8 μg kg–1 in the dry sediment from the Velgoška River and between 0.553 μg kg–1 for total endosulfan and 5.982 μg kg–1 for p,p’-DDE of wet fish biomass. The most abundant of the detected organochlorine pesticides was the sum of DDT metabolic forms, i.e. p,p’-DDT, p,p’-DDE and p,p’-DDD. The detected concentrations are clearly below toxic thresholds and consequently severe effects on the endemic species of Lake Ohrid are not very likely.

Liquid Chromatographic Determination of Hypoxanthine Content in Fish Tissue

1985 ◽  
Vol 68 (3) ◽  
pp. 444-448 ◽  
Author(s):  
Garth B Burns ◽  
Paul J Ke
Keyword(s):  
Potassium Phosphate ◽  
Adenosine Monophosphate ◽  
Fish Tissue ◽  
Chromatographic Determination ◽  
Fish Tissues ◽  
Absorbance Detection ◽  
Relative Standard ◽  
Operational Errors ◽  
Liquid Chromatographic

Abstract A liquid chromatography (LC) method for determining the hypoxanthine content in fish tissues has been developed. Hypoxanthine is extracted with 0.6M perchloric acid, and determined by LC on a reverse phase microparticulate column with UV absorbance detection. The mobile phase is 0.01M potassium phosphate buffer (pH 4.5). The percent relative standard deviation for measurements by the recommended method was less than 7% with a detection limit of 10 ng. Recoveries of hypoxanthine added to various fish tissues were better than 90%. The operational errors, interferences, and recoveries for spiked samples have been investigated and compare favorably with an established xanthine oxidase enzyme method. The described LC method is simple, rapid, and specific for measuring hypoxanthine content in various fish tissues. Some post-mortem studies have indicated the method may also be used for the determination of adenosine monophosphate, inosine monophosphate, and inosine.

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