Ecotoxicological Assessment of Sediment, Suspended Matter and Water Samples in the Upper Danube River. A pilot study in search for the causes for the decline of fish catches (12 pp)

2006 ◽  
Vol 13 (5) ◽  
pp. 308-319 ◽  
Author(s):  
Steffen Keiter ◽  
Andrew Rastall ◽  
Thomas Kosmehl ◽  
Lothar Erdinger ◽  
Thomas Braunbeck ◽  
...  
Keyword(s):  
Pilot Study ◽  
Suspended Matter ◽  
Water Samples ◽  
Danube River ◽  
Ecotoxicological Assessment

scholarly journals Physico-Chemical Treatment of a Wastewater Collector Loaded with Metals and Suspension Material by The Solution of Raw Carica papaya Latex

2020 ◽  
pp. 42-49
Author(s):  
Togbe Finagnon Crépin Alexis ◽  
Yete Pélagie ◽  
Yovo Franck ◽  
Wotto Valentin
Keyword(s):  
Suspended Matter ◽  
Water Samples ◽  
Carica Papaya ◽  
Metal Removal ◽  
Tropical Plant ◽  
Iron Copper ◽  
Physico Chemical ◽  
Copper Zinc ◽  
Papaya Latex ◽  
Carica Papaya Latex

The papaya (Carica papaya), of the family Caricaceae, is a tree-like tropical plant, native to Central and South America. Papaya cultivation extends to all warm and humid countries. The present study consists in using the solution of raw Carica papaya latex (SLCP) cultivated in Benin as a natural biodegradable flocculant in a physico-chemical process to treat liquid discharges loaded with metals including iron, copper, zinc, and manganese; and suspended matter, and also to test its efficiency against other products commonly used in wastewater treatment. The tests were carried out on water samples from the wastewater collector that runs through the Agla district in Cotonou. The comparative study with a commonly used flocculant, aluminium sulphate, showed outstanding competitiveness with a high flocculation power for the solution of Carica papaya raw latex. In six water samples from the collector with average concentrations of iron, copper, zinc and manganese of 18.20 mg/L ; 2.50mg/L ; 3.80 mg/L and 3.70 mg/L respectively, the percentages of metal removal exceeded 90% for iron and manganese and around 85% for copper and zinc with the combination FeCl3 + SLCP. The NaOH + SLCP combination showed a very significant effect on the removal of metals (96% reduction) and suspended matter.

scholarly journals Identification of SARS-CoV-2 and Enteroviruses in Sewage Water—A Pilot Study

Viruses ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 844
Author(s):  
Anda Băicuș ◽  
Carmen Maria Cherciu ◽  
Mihaela Lazăr
Keyword(s):  
Cell Culture ◽  
Pilot Study ◽  
Early Detection ◽  
Severe Acute Respiratory Syndrome ◽  
Water Samples ◽  
Sewage Water ◽  
Specific Test ◽  
Prevalence Estimates ◽  
Rapid Tests ◽  
Pcr Assays

Due to the outbreak of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), combined with the risk of polio importation from Ukraine, we evaluated the presence of SARS-CoV-2 and enteroviruses in 25 sewage water samples from Romania, concentrated using the WHO method between January 2020 and January 2021. Surveillance for enteroviruses and SARS-CoV-2 are relevant in the calculation of prevalence estimates as well as early detection of the introduction or disappearance of these viruses. For SARS-CoV-2 detection, we used two immunochromatographic nucleocapsid antigenic tests as well as real-time PCR assays, produced for respiratory samples. The isolation of cell culture lines, in accordance with the WHO recommendations, was carried out for enterovirus detection. Twenty-three of the samples investigated were positive in rapid tests for SARS-CoV-2, while the RNA of SARS-CoV-2, detected with Respiratory 2.1 plus a panel Biofire Film array, was present in eight samples. The Allplex 2019-nCoV assay was used for the validation of the tests. There were three genes detected in one sample, E, RdPR, and N, two genes, E and RdPR, in one sample, two genes, RdPR and N, in four samples, one gene, RdPR, in five samples and one gene, N, in one sample. Eight samples were positive for non-polio enteroviruses, and no poliovirus strains were isolated. This study suggests the presence of SARS-CoV-2 and enteroviruses in Romanian sewage water in 2020. As such, our results indicate that a rapid, more specific test should be developed especially for the detection of SARS-CoV-2 in sewage water.

scholarly journals The correlation between the mineral drinking water composition and the relevance of dentine in health – A pilot study

2020 ◽  
Vol 36 (3) ◽  
Author(s):  
Creteanu Razvan ◽  
Monica Popa ◽  
Ana-Maria Incze ◽  
Creteanu Cristina
Keyword(s):  
Drinking Water ◽  
Pilot Study ◽  
Water Samples ◽  
Negative Impact ◽  
Inverse Correlation ◽  
Future Research ◽  
Creative Commons ◽  
Permanent Molar ◽  
Water Composition ◽  
Carious Teeth

Objective: This study estimated the concentration of Ca, Mg and F in drinking water from five counties in Transylvania, Romania and correlated these with mineral values found in the dentine of permanent carious teeth. The role of these minerals on the re-mineralization of teeth is broadly analyzed. Methods: The study consists of two parts: the first part is a pilot study aimed at determining the concentration of Ca, Mg and F in the dentine of permanent carious teeth of 75 male adults with residence in five counties in Transylvania. The second part is an evaluation of the levels of mineral composition in the drinking water from these counties. Mineral concentrations in dentine and drinking water samples, were determined in the laboratories of the public health institute and the research and analysis institute in Cluj Napoca, Romania. Results: Statistically we found a direct and significant correlation between the Ca, Mg and F contain from the water samples and Ca, Mg and F contain from the dentine samples and an inverse correlation was statistically highlighted between Ca found in water samples and the F concentration in dentine samples. Improperly water mineralization associated with a general lack of fluoride reveals a potential negative impact on consumer health, including the oral-jaw system. Conclusions: The results of this study indicate the need for improving the prevention of dental caries which is a priority in promoting orthodontic health for children. The variability in dentine minerals indicates the fact that permanent molar dentin represents an important biomarker for exposure. The future research will have to take into consideration the community residency status and the fact that these studies require a large sample to separate individual and community level contributions to dentin fluoride. Considering these notifications, we conclude that minerals are highly associated with caries. doi: https://doi.org/10.12669/pjms.36.3.1820 How to cite this:Razvan C, Popa M, Incze AM, Cristina C. The correlation between the mineral drinking water composition and the relevance of dentine in health – A pilot study. Pak J Med Sci. 2020;36(3):---------. doi: https://doi.org/10.12669/pjms.36.3.1820 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Neonicotinoids Detection by new LC-MS/MS Method in Romanian Surface Waters

2017 ◽  
Vol 68 (8) ◽  
pp. 1716-1722 ◽  
Author(s):  
Vasile Ion Iancu ◽  
Toma Galaon ◽  
Marcela Niculescu ◽  
Carol Blaziu Lehr
Keyword(s):  
Surface Water ◽  
Surface Waters ◽  
Water Samples ◽  
Solid Phase ◽  
Monitoring Program ◽  
Danube River ◽  
Limit Of Quantification ◽  
Neonicotinoid Insecticides ◽  
Relative Standard ◽  
Surface Water Samples

Increasing and widespread use of neonicotinoid insecticides in all world, together with their highly toxicity to invertebrates and environmental persistence mean that surface waters need to be monitored for these compounds. In the 2015, neonicotinoid insecticides have been incorporated in the watch list of substances for a European Union monitoring program (495/2015/ EU). A new method using automated solid phase extraction (SPE) with polymeric cartridges (OASIS HLB) followed by LC-MS/MS provided good separation of the most common neonicotindoid compounds. The method was developed for the determination of four neonicotinoid insecticides (nitenpyram, thiamethoxam, clothianidin, acetamiprid) in surface water with low limit of quantification (0.3-0.9 ng/L, nanograms per liter). Recoveries in surface water samples fortified at 200 ng/L for each compound ranged from 71.4 to 109.9 %; relative standard deviation ranged from 4 to 9%. The method was applied to water samples from four streams in Romania, Danube River and its tributaries (Arges River, Jiu River, and Olt River). The surface water samples were found to be contaminated clothianidin (1.08-6.4 ng/L) and by thiamethoxam (1.1-3.8ng/L). The highest concentrations were recorded in Danube River in Oltenita point (6.4ng/L) and in Gura-Vaii point (5.5ng/L). The concentration of acetamiprid and nitenpyram were situated below limit of quantification in all samples.

Pilot Study for U.S. Geological Survey Standard Reference Water Samples for Pesticides

1984 ◽  
Vol 12 (2) ◽  
pp. 114 ◽  
Author(s):  
R Horstman ◽  
KA Peters ◽  
S Gebremedhin ◽  
RL Meltzer ◽  
M Bruce Vieth ◽  
...  
Keyword(s):  
Pilot Study ◽  
Water Samples ◽  
Geological Survey

scholarly journals Analysis of Heavy Metals Concentration in Tissues of Three Different Fish Species Included in Human Diet from Danube River

2016 ◽  
Vol 66 (1) ◽  
pp. 89-102 ◽  
Author(s):  
Đ. Raša Milanov ◽  
P. Milena Krstić ◽  
V. Radmila Marković ◽  
A. Dragoljub Jovanović ◽  
M. Branislav Baltić ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Digestive Tract ◽  
Fish Species ◽  
Cyprinus Carpio ◽  
Water Samples ◽  
Silver Carp ◽  
Danube River ◽  
Hypophthalmichthys Molitrix ◽  
Silurus Glanis ◽  
Fish Samples

AbstractThe aim of this study was the investigation of water, sediments and fish tissues contamination with heavy metals. All samples were taken from the Danube River in Belgrade region, a location upstream from Batajnica. Concentrations of Cd, Hg and Pb in water samples were not detected, while concentrations of Zn, Fe, Cu and As were in the range of 0.004 - 0.330 mg L-1. Iron was the most deposited metal in sediment samples in contrast to water samples where all investigated metals were detected. For the purpose of heavy metals determination in fresh fish tissue, fifteen samples of three different fish species, silver carp (Hypophthalmichthys molitrix), common carp (Cyprinus carpio) and wels catfish (Silurus glanis) were collected. Concentrations of Pb, Cd, As and Hg were determined in the digestive tract, liver and muscle by absorption spectroscopy. The highest concentration of Pb was in the digestive tract in all three fish species, ranging from 0.036 to 1.518 μg g-1, while Cd was mostly deposited in the liver. Concentrations of As were in the range of 0.36 - 0.73 μg g-1in Hypophthalmichthys molitrix, 0.013 - 0.18 μg g-1in Cyprinus carpio and 0.003 - 0.005 μg g-1in Silurus glanis tissues, while the content of Hg was equal in all tested tissues of carp. Concentrations of all metals were found to be present in the fish samples at different levels, but these values are under the maximum residual levels prescribed by the European Union (EU) and the maximum allowed concentrations (MAC) for Serbia, so the fish meat is acceptable for the human consumption.

scholarly journals The anthropogenic impact on water quality of the river Danube in Serbia: Microbiological analysis and genotoxicity monitoring

2011 ◽  
Vol 63 (4) ◽  
pp. 1209-1217 ◽  
Author(s):  
S. Kolarevic ◽  
Jelena Knezevic-Vukcevic ◽  
M. Paunovic ◽  
Jelena Tomovic ◽  
Z. Gacic ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Danube River ◽  
Fecal Coliforms ◽  
Polluted Water ◽  
Resistant Bacteria ◽  
Control Group ◽  
Microbiological Analysis ◽  
The Impact

The aim of this work was to examine the impact of urban wastewaters on the water quality of the Danube River in Serbia. Samples of water and sediments for microbiological analysis and genotoxicity monitoring were collected from 6 sites during spring and/or autumn 2010. Sanitary analysis, i.e. enumeration of total and fecal coliforms and intestinal enterococci, indicated moderate to critical fecal contamination, while organic load assessment (oligotroph to heterotroph ratio, index of phosphatase activity) revealed the category of moderately polluted water. Mercury-resistant bacteria were detected in all water samples, with high numbers at locations positioned downstream of Belgrade. There was no correlation of the microbiological parameters of the sediment and water samples. Genotoxicity monitoring, performed by the comet assay on hemocytes of mussels Sinanodonta woodiana, indicated a significant increase of DNA damage in mussels collected from the studied sites compared with the control group.

scholarly journals Potential Toxic Effects of Airport Runoff Water Samples on the Environment

2021 ◽  
Vol 13 (13) ◽  
pp. 7490
Author(s):  
Anna Maria Sulej-Suchomska ◽  
Piotr Przybyłowski ◽  
Żaneta Polkowska
Keyword(s):  
Water Samples ◽  
Large Scale ◽  
Trophic Levels ◽  
Runoff Water ◽  
Aquatic Life ◽  
Ecotoxicological Assessment ◽  
Four Seasons ◽  
Airport Terminals ◽  
Intensive Development ◽  
Very High

Despite the positive aspects of the intensive development of aviation, airports are considered large-scale polluters. Pollution caused by runoff water (stormwater) is one of the major problems related to airport operations. The aim of this study was to characterize the potential toxic impact on aquatic life from runoff water discharges from four international airports in Europe. Samples of stormwater were collected at airports with different capacities of passenger movement in four seasons of the year from 2011 to 2013. Within the ecotoxicological analyses, a battery of biotests incorporating organisms of different trophic levels (Microtox® test, Thamnotoxkit F™) were used. A relatively high number of runoff water samples collected at the investigated airports in Europe was recorded as having very high acute hazard (16.8%), acute hazard (27.7%), and slight acute hazard (18.1%) levels. The results of the research indicate that winter and autumn present a greater toxic threat than the rest of the year. The highest number of toxic samples was observed for samples collected in the de-icing area, the runway and the vicinity of airport terminals. The ecotoxicological assessment applied in this research can be used as a tool for assessing the environmental effect of airports.

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