scholarly journals Rotavirus contamination of surface waters from the northwest of Argentina

2020 ◽  
Vol 18 (3) ◽  
pp. 409-415
Author(s):  
Verónica Emilse Prez ◽  
Hugo Ramiro Poma ◽  
Georgina Gisela Giordano ◽  
Matías Victoria ◽  
Silvia Viviana Nates ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Waters ◽  
Water Samples ◽  
Local Population ◽  
Fecal Pollution ◽  
Group A Rotavirus ◽  
Group A ◽  
Viral Indicators ◽  
Northern City

Abstract Fecal pollution of water is a serious concern because it is associated with the transmission of pathogens. The aim of this study was to analyze the occurrence of group A rotavirus (RVA) in surface waters from the Arias–Arenales River in Salta, a northern city in Argentina, and to define possible sources of fecal viral pollution. A total of 116 water samples were analyzed and RVA was detected in 3.4% (95% CI: 0.1–7.0%), with concentrations ranging from 1.9 × 105 to 3.8 × 106 genome copies per liter. RVA strains were characterized as G1P[8], G4P[8] and G9P[8], which are common genotypes circulating in the local population. The Arias–Arenales River presented unusual and sporadic contamination by RVA, originated from stormwater discharges and a variety of non-identified sources, and support the essential need of viral indicators for enhanced monitoring of water quality.

scholarly journals Water Quality Assessment of Surface Waters and Wastewaters by Traditional and Ecotoxicological Indicators in Ogosta River, Bulgaria

2021 ◽  
Vol 25 (1) ◽  
pp. 25-40
Author(s):  
Galina Yotova ◽  
◽  
Svetlana Lazarova ◽  
Veronika Mihaylova ◽  
Tony Venelinov ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Waters ◽  
Water Samples ◽  
Arsenic Concentration ◽  
Sample Pretreatment ◽  
Water Quality Assessment ◽  
Natural Processes ◽  
Ecotoxicological Effect ◽  
Wastewater Samples ◽  
Surface Water Samples

Surface water samples in Ogosta River, Bulgaria and wastewater samples at the inlet and outlet of WWTP–Montana were tested for the traditional parameters and ecotoxicological effect. The river and Dam surface waters comply with category A1 of Directive 75/440/EEC for pH, EC, COD, TSS, NO3–, Cl–, SO42–, B, Ba, Co, Cr, Cu, Hg, Mn, Ni, Pb, Se, V and Zn; with category A2 for BOD5, NH4+–N and Fe; and with category A3 for TNb and As. The average annual concentrations of Al, Cr (III), Cr (VI) and U are lower than the set limits in the Water Framework Directive. Arsenic concentration in all the samples exceeds the maximum allowed concentration, a results from natural processes. All the levels of the studied parameters in the outlet wastewater samples are lower than the limits, set in Directive 91/271/EEC and in the complex permit of the WWTP. The results of the biotest Phytotoxkit F™ show low ecotoxicity of the water samples. Optimization of the sample pretreatment prior to this ecotoxicological test is analyzed and discussed.

scholarly journals Testing for viral material in water of public bathing areas of the Danube during summer, Vojvodina, Serbia, 2014

2016 ◽  
Vol 21 (15) ◽  
Author(s):  
Aleksandra Jovanović Galović ◽  
Sanja Bijelović ◽  
Vesna Milošević ◽  
Ivana Hrnjaković Cvjetkovic ◽  
Milka Popović ◽  
...  
Keyword(s):  
Surface Waters ◽  
Water Samples ◽  
Genetic Material ◽  
Recreational Water ◽  
Recreational Waters ◽  
Quality Of Water ◽  
Viral Indicators ◽  
Urban Wastewater Treatment ◽  
Recreational Use

From August to September 2014 a water quality study was conducted on five popular public Danube beaches in Vojvodina, Serbia. To assess the safety of Danube water for bathing, physical, chemical, bacteriological tests were performed. While many parameters for monitoring the quality of water are regulated by law, there are neither national nor international legislations addressing the presence of viruses in recreational waters. In this study, we performed analyses that surpassed national requirements, and investigated if adenovirus, enterovirus or rotavirus genetic material was present in samples of recreational water collected for quality monitoring. Of 90 water samples obtained during the study, enterovirus material was not found in any sample, but adenovirus and rotavirus genetic materials were respectively detected in 60 and 31 samples. Statistical analyses showed a significant correlation between adenovirus DNA and total coliforms in the water. Even when water samples were adequate for recreational use, adenoviruses were detected in 75% (57/76) of such samples. Our results indicate that implementation of viral indicators in recreational water might be helpful to better assess public health safety. This might be particularly relevant in areas where urban wastewater treatment is insufficient and surface waters affected by wastewater are used for recreation.

scholarly journals Hydrochemical Characteristics, Toxic Element Sources, and Health Risk Assessment of Surface Waters in the Amu Darya Basin of Uzbekistan, arid Central Asia

2021 ◽  
Author(s):  
Shuie Zhan ◽  
Jinglu Wu ◽  
Miao Jin
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Health Risk ◽  
Central Asia ◽  
Health Risks ◽  
Surface Waters ◽  
Water Samples ◽  
Toxic Elements ◽  
Hydrochemical Characteristics ◽  
Amu Darya

Abstract As the core of arid Central Asia, Uzbekistan is experiencing prominent water scarcity with increasingly warming climate and accelerated human impact. To determine the hydrochemical characteristics and sources of toxic elements, as well as to assess water quality and health risks in Uzbekistan, 55 surface water samples were collected from the Amu Darya Basin of Uzbekistan (ADBU) and monitored for 20 parameters. A hierarchical cluster analysis showed that river water samples from the middle reach and Amu Darya Delta (ADD) were dominantly HCO3-Ca and SO4-Ca·Mg type, respectively. While the water samples collected near the former shoreline of the ADD and sewage outlets were dominantly Cl-Ca·Mg and Cl-Na types, which were consistent with the distribution of sites with high concentrations of toxic elements, seriously affected by human activities. Furthermore, principal component analysis indicated that the toxic elements of Pb and Cd in surface waters of the ADBU had industrial origins; local agricultural activities were considered to have contributed much of the NO3, Zn, Ni, Hg and Mn through pesticides and fertilizers; and Cu, Cr, As, and Co were controlled by mixed anthropogenic and natural sources. The results of water quality and health risk assessment also suggested that unsuitable drinking waters were displayed near the former shoreline of the ADD region and sewage outlets, and human health risks also occurred these areas.

scholarly journals Methanobrevibacter ruminantium as an Indicator of Domesticated-Ruminant Fecal Pollution in Surface Waters

2007 ◽  
Vol 73 (21) ◽  
pp. 7118-7121 ◽  
Author(s):  
Jennifer A. Ufnar ◽  
Shiao Y. Wang ◽  
David F. Ufnar ◽  
R. D. Ellender
Keyword(s):  
Surface Waters ◽  
Water Samples ◽  
Environmental Samples ◽  
Environmental Water ◽  
Fecal Pollution ◽  
Environmental Water Samples ◽  
Amplification Product ◽  
Methanobrevibacter Ruminantium

ABSTRACT A PCR-based assay (Mrnif) targeting the nifH gene of Methanobrevibacter ruminantium was developed to detect fecal pollution from domesticated ruminants in environmental water samples. The assay produced the expected amplification product only when the reaction mixture contained DNA extracted from M. ruminantium culture, bovine (80%), sheep (100%), and goat (75%) feces, and water samples from a bovine waste lagoon (100%) and a creek contaminated with bovine lagoon waste (100%). The assay appears to be specific and sensitive and can distinguish between domesticated- and nondomesticated-ruminant fecal pollution in environmental samples.

Assessment of drinking water quality within amalgamated territorial communities

2021 ◽  
Vol 6 (4) ◽  
pp. 201-210
Author(s):  
Ruslana Valerko ◽  
◽  
Liudmyla Herasymchuk ◽  
Yevgenii Hurskyi ◽  
Anastasiya Pavlenko ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Water Samples ◽  
Pure Water ◽  
Local Population ◽  
National Standards ◽  
Drinking Water Quality ◽  
Nitrate Content ◽  
Rural Settlements

One of the main problems of rural residential areas is to provide the local population with quality drinking water, which is a major factor influencing their health. To solve this problem, it is necessary to implement effective measures not only at the state level but also at the regional and local levels. The main purpose of decentralization of power is to transfer the power and appropriate financial resources to the lowest levels of local self-government, which makes it possible for created amalgamated communities to use these resources to solve the priority issues. However, to determine the ecological state of rural settlements in the subsystem of drinking water quality, it is necessary to assess its quality in the territory where the community is situated. The investigation was carried out in 15 rural settlements of the Teterivka amalgamated community of the amalgamated Zhytomyr district. 36 water samples were selected from the sources of non-centralized water supply. Water quality classes were determined following DSTU (National Standards of Ukraine) 4808:2007 “Sources of Centralized Drinking Water Supply. Hygienic and Environmental Requirements for Water Quality and Selection Rules”. As a result, it has been established that nitrates make the largest contribution to the pollution of drinking water. In 47% of the selected samples, the nitrate content on average exceeded the norm; and in 46.7% of the investigated settlements, water belongs to quality class 4, defined as “mediocre”, “partially potable” of undesirable quality. A critical situation was recorded in the villages of Mykhailivka, Nova Rudnia and Staroshiika, where the nitrate content in all selected samples of the well water exceeded the norm. On average, 61% of the selected water samples did not meet the standard and were below the standard. According to the pH indicator, the quality classes vary from “excellent”, very pure water grading to the class of “good”, pure water of the desired quality to “satisfactory”, slightly contaminated water of acceptable quality. The total iron content exceeded the standard in 5.6% of the selected samples.

scholarly journals Evaluation of potability of water consumed by residents of the Lagoa de Cima region

2021 ◽  
Author(s):  
Zélia Maria Peixoto Chrispim ◽  
Kariny Alves de Sousa Santos ◽  
Thaíss do Rosário das Chagas ◽  
Tatiana Salema Marques Portella ◽  
Frank de Souza Pavan
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Local Population ◽  
Human Beings ◽  
Public Authorities ◽  
Adequate Treatment ◽  
Quality Of Water ◽  
Map Generation ◽  
Shallow Wells ◽  
Environmental Protection Area

The research is directed towards the study of water quality, specifically, of the residents who live in the Environmental Protection Area (EPA) of Lagoa de Cima, in Campos dos Goytacazes – RJ. Water is a primordial resource for the survival of all living beings, but when it comes to human beings, some care is needed in relation to its potability. Unfortunately, not everyone has access to portable water or even adequate treatment for it, which can lead to health problems in the future. This work aimed to evaluate the quality of water that is consumed by residents living in the urban center of São Benedito, which is located in Lagoa de Cima. Regarding the methodology, the following procedures were carried out: collection of bibliographic and documentary data, such as: ordinance, theses, articles, pre-existing “shapefiles” from Lagoa de Cima and the municipality of Campos dos Goytacazes; systematic review; collection of water samples from shallow wells for physicochemical and bacteriological analyses, map generation with spatialized water samples and elaboration of tables. According to the results obtained from the bacteriological analyses, the presence of total coliforms and thermotolerant coliforms was found in some samples. Among the physicochemical parameters analyzed, pH, Fe and Mn are in disagreement with the consolidation ordinance of Nº. 5/2017. Thus, it can be concluded that it is necessary that the public authorities provide assistance to the local population in relation to water quality

Shedding light on water quality: prospect for real-time control

2003 ◽  
Vol 3 (1-2) ◽  
pp. 247-253 ◽  
Author(s):  
D. Reynolds
Keyword(s):  
Water Quality ◽  
Fluorescence Spectroscopy ◽  
Surface Waters ◽  
Water Samples ◽  
Organic Contaminants ◽  
Broad Band ◽  
Quantitative Detection ◽  
Water Types ◽  
Fluorescence Characteristics ◽  
Optical Fluorescence

Fluorescence spectroscopy has been used to measure gross water quality parameters and organic contaminants in a variety of water samples (surface, drinking and wastewater). Water samples exhibit characteristic fluorescence signatures and excitation and emission spectral data can be used to provide intensity data and “optical fluorescence fingerprints”. Sewage wastes exhibit broad band fluorescence centred at 350 nm and two relatively less intense bands at about 390 and 430 nm. Samples that have been treated in an aerobic digester show a substantial reduction in fluorescence around 350 nm. Normalised intensities in this region demonstrate good correlation with BOD, COD and TOC values (R2 values between 0.85 and 0.91). Drinking and surface waters also demonstrate unique fluorescence characteristics, which provide individual characteristic fingerprints. Results are presented that demonstrate the usefulness of fluorescence spectroscopy for the qualitative and quantitative detection of certain organic species present in different water types. Tryptophan is quantified in drinking and surface waters at levels around 8 × 10-9 mol l-1. Optical fluorescence fingerprints are unique for particular water types and are readily altered in the presence of organic contaminants including phenol and pyrene. The possibility of using fluorescence techniques for the continuous noninvasive monitoring of water quality is discussed.

Investigation of Some Water Quality Parameters of Pond Water under Mymensingh Municipality

2015 ◽  
Vol 8 (1) ◽  
pp. 85-89
Author(s):  
F Zannat ◽  
MA Ali ◽  
MA Sattar
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Chemical Properties ◽  
Pond Water ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Urban Region ◽  
Mn Toxicity ◽  
Ph Values ◽  
Drinking Water Standard

A study was conducted to evaluate the water quality parameters of pond water at Mymensingh Urban region. The water samples were collected from 30 ponds located at Mymensingh Urban Region during August to October 2010. The chemical analyses of water samples included pH, EC, Na, K, Ca, S, Mn and As were done by standard methods. The chemical properties in pond water were found pH 6.68 to 7.14, EC 227 to 700 ?Scm-1, Na 15.57 to 36.00 ppm, K 3.83 to 16.16 ppm, Ca 2.01 to 7.29 ppm, S 1.61 to 4.67 ppm, Mn 0.33 to 0.684 ppm and As 0.0011 to 0.0059 ppm. The pH values of water samples revealed that water samples were acidic to slightly alkaline in nature. The EC value revealed that water samples were medium salinity except one sample and also good for irrigation. According to drinking water standard Mn toxicity was detected in pond water. Considering Na, Ca and S ions pond water was safe for irrigation and aquaculture. In case of K ion, all the samples were suitable for irrigation but unsuitable for aquaculture.J. Environ. Sci. & Natural Resources, 8(1): 85-89 2015

Sign in / Sign up

Export Citation Format

Share Document