442. Evaluating Worker Exposure During Spray Irrigation Operations Using Contaminated Water Sources

1999 ◽  
Author(s):  
L. Swenson ◽  
K. Kalbfleisch ◽  
B. Kelman ◽  
R. Brecher
Keyword(s):  
Water Sources ◽  
Contaminated Water ◽  
Worker Exposure ◽  
Spray Irrigation

scholarly journals Novel magnetic core-shell nanoparticles for the removal of polychlorinated biphenyls from contaminated water sources

2019 ◽  
Vol 223 ◽  
pp. 68-74 ◽  
Author(s):  
Angela M. Gutierrez ◽  
Rohit Bhandari ◽  
Jiaying Weng ◽  
Arnold Stromberg ◽  
Thomas D. Dziubla ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Magnetic Core ◽  
Water Sources ◽  
Core Shell ◽  
Contaminated Water ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

scholarly journals Melamine-based functionalized graphene oxide and zirconium phosphate for high performance removal of mercury and lead ions from water

RSC Advances ◽  
2020 ◽  
Vol 10 (62) ◽  
pp. 37883-37897
Author(s):  
Ayyob M. Bakry ◽  
Fathi S. Awad ◽  
Julian A. Bobb ◽  
Amr A. Ibrahim ◽  
M. Samy El-Shall
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Zirconium Phosphate ◽  
Selective Extraction ◽  
Water Sources ◽  
Lead Ions ◽  
Contaminated Water ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide

Two novel chelating adsorbents are developed for the effective and selective extraction of Hg(ii) and Pb(ii) ions from contaminated water sources.

scholarly journals Xenic Cultivation and Genotyping of Pathogenic Free-Living Amoeba from Public Water Supply Sources in Uganda

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Celsus Sente ◽  
Joseph Erume ◽  
Irene Naigaga ◽  
Benigna Gabriela Namara ◽  
Julius Mulindwa ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Protected Area ◽  
Water Sources ◽  
Public Water Supply ◽  
Contaminated Water ◽  
Domestic Water ◽  
Free Living ◽  
Water Contaminants ◽  
Free Living Amoeba

Studies on waterborne parasites from natural environment and domestic water sources in Uganda are very scarce and unpublished. Water dwelling free-living amoebae (FLA) of the genus Acanthamoeba, Hartmannella, and Naegleria are often responsible for causing morbidities and mortalities in individuals with recent contact with contaminated water, but their presence in Uganda’s public water supply sources is not known. We cultivated and genotyped FLA from natural and domestic water from Queen Elizabeth Protected Area (QEPA) and Kampala (KLA). The cultivated parasites were observed microscopically and recorded. The overall prevalence of FLA in QEPA (Acanthamoeba spp., 35%; Hartmannella spp., 18.9%; Naegleria spp., 13.5%) and KLA (Acanthamoeba spp., 28.3%; Naegleria spp., 16.6%; Hartmannella spp., 23.1%) were not significantly different. The highest prevalence across water sources in QEPA and KLA was observed for Acanthamoeba spp., followed by Hartmannella spp., and Naegleria spp. Overall FLA mean (±SE) and mean (±SE) across water sources were highest for Acanthamoeba spp. compared to other FLA but were not statistically significant (p > 0.05). Analysis of the FLA sequences produced 1 Cercomonas, 1 Nuclearia, 1 Bodomorpha, 2 Hartmannella, 5 Echinamoeba, and 7 Acanthamoeba partial sequences, indicating a muliplicity of water contaminants that need to be controlled by proper water treatment.

scholarly journals Synthesis of magnetic nanocomposite microparticles for binding of chlorinated organics in contaminated water sources

2020 ◽  
Vol 137 (37) ◽  
pp. 49109
Author(s):  
Angela M. Gutierrez ◽  
Rohit Bhandari ◽  
Jiaying Weng ◽  
Arnold Stromberg ◽  
Thomas D. Dziubla ◽  
...  
Keyword(s):  
Water Sources ◽  
Magnetic Nanocomposite ◽  
Contaminated Water ◽  
Chlorinated Organics ◽  
Nanocomposite Microparticles

scholarly journals Presence and Persistence of Salmonella enterica Serotype Typhimurium in the Phyllosphere and Rhizosphere of Spray-Irrigated Parsley

2012 ◽  
Vol 78 (11) ◽  
pp. 4030-4036 ◽  
Author(s):  
Guy Kisluk ◽  
Sima Yaron
Keyword(s):  
Salmonella Enterica ◽  
Control Strategies ◽  
Polluted Water ◽  
Contaminated Water ◽  
Content Type ◽  
Qrt Pcr ◽  
Food Borne ◽  
Spray Irrigation ◽  
Fresh Foods ◽  
And Control

ABSTRACTSalmonella entericais one of the major food-borne pathogens associated with ready-to-eat fresh foods. Although polluted water might be a significant source of contamination in the field, factors that influence the transfer ofSalmonellafrom water to the crops are not well understood, especially under conditions of low pathogen levels in water. The aim of this study was to investigate the short- and long-term (1 h to 28 days) persistence ofSalmonella entericaserotype Typhimurium in the phyllosphere and the rhizosphere of parsley following spray irrigation with contaminated water. Plate counting and quantitative real-time PCR (qRT-PCR)-based methods were implemented for the quantification. By applying qRT-PCR with enrichment, we were able to show that even irrigation with water containing as little as ∼300 CFU/ml resulted in the persistence ofS. Typhimurium on the plants for 48 h. Irrigation with water containing 8.5 log CFU/ml resulted in persistence of the bacteria in the phyllosphere and the rhizosphere for at least 4 weeks, but the population steadily declined with a major reduction in bacterial counts, of ∼2 log CFU/g, during the first 2 days. Higher levels ofSalmonellawere detected in the phyllosphere when plants were irrigated during the night compared to irrigation during the morning and during winter compared to the other seasons. Further elucidation of the mechanisms underlying the transfer ofSalmonellafrom contaminated water to crops, as well as its persistence over time, will enable the implementation of effective irrigation and control strategies.

Capturing Cd(ii) and Pb(ii) from contaminated water sources by electro-deposition on hydrotalcite-like compounds

2016 ◽  
Vol 18 (3) ◽  
pp. 1838-1845 ◽  
Author(s):  
M. A. González ◽  
R. Trócoli ◽  
I. Pavlovic ◽  
C. Barriga ◽  
F. La Mantia
Keyword(s):  
Aqueous Solutions ◽  
Water Sources ◽  
Contaminated Water ◽  
Electro Deposition ◽  
Potential Applications ◽  
Toxic Pollutant ◽  
Electrochemical Removal

Two different hydrotalcite-like compounds were prepared and used as substrates for the electrochemical removal of extremely toxic pollutant cations, such as Cd(ii) and Pb(ii), from aqueous solutions, and their posterior recovery for further potential applications.

scholarly journals Water Quality Index Assessment ofGroundwater in Todaraisingh Tehsil of Rajasthan State, India-A Greener Approach

2010 ◽  
Vol 7 (s1) ◽  
pp. S428-S432 ◽  
Author(s):  
Ashok Kumar Yadav ◽  
Parveen Khan ◽  
Sanjay K. Sharma
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Statistical Analysis ◽  
Groundwater Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Quality Standards ◽  
Water Sources ◽  
Contaminated Water ◽  
Water Quality Standards

This study deals with the statistical analysis and study of water quality index to assess hardness of groundwater in Todaraisingh tehsil of Tonk district of Rajasthan state. The study has been carried out to examine its suitability for drinking, irrigation and industrial purpose. The presence of problematic salts contains in groundwater due to local pollutants and affected the groundwater quality adversely. The estimated values were compared with drinking water quality standards prescribed by B.I.S. It was found that drinking water is severely polluted with hardness causing salts. This study reveals that people dependent on water sources of the study area are prone to health hazards of contaminated water and quality managements to hardness urgently needed.

scholarly journals Contamination of Water Sources of Karaj Hospitals with Legionella pneumophila and Campylobacter jejuni

2020 ◽  
Vol 8 (4) ◽  
pp. 142-146
Author(s):  
Niloofar Ghomimaghsad ◽  
Somayeh Yaslianifard ◽  
Mohammad Mohammadzadeh ◽  
Masoud Dadashi ◽  
Mohammad Noorisepehr
Keyword(s):  
Campylobacter Jejuni ◽  
Legionella Pneumophila ◽  
Water Samples ◽  
High Efficiency ◽  
Cold Water ◽  
Bacterial Species ◽  
Water Sources ◽  
Hot Water ◽  
Water Supply Systems ◽  
Contaminated Water

Background: One of the most common routes of infection development in humans is contaminated water. Legionella pneumophila and Campylobacter jejuni are the important causes of community- and hospital-acquired pneumonia and gastroenteritis that are transmitted to humans via the inhalation of contaminated water droplets and consumption of contaminated water, respectively. Thus, continuous monitoring of the water supply systems for these pathogens has great importance in public health. Objective: This study aimed to evaluate the water contamination of Karaj hospitals with these two bacterial species. Materials and Methods: In this study, 62 water samples were obtained from different parts of the hospitals of Karaj from April to September 2019, including air conditioning systems, dialysis equipment, ventilation tanks, and different wards of a hospital such as infectious diseases, pediatrics, gastroenterology, dialysis, and intensive and neonatal intensive care units. The samples were collected in sterile containers and immediately transferred to the laboratory for further analysis. The culture on specific media, staining, and biochemical tests were performed to identify the L. pneumophila and C. jejuni. Results: Out of 62 water samples, 25.8% (16 samples) were positive for L. pneumophila; 68.75% were observed in hot water samples, and 31.25% were attributed to cold water samples. Among 62 samples, 4.84% (3 samples) were positive for C. jejuni, which were all detected in hot water samples. Conclusion: Considering that the methods of water refinery of municipal water have no high efficiency, the quality improvement of the water sources of hospitals seems to be necessary.

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