Assessing the quality of natural waters in Magnesia prefecture in Greece using Toxkits

2000 ◽  
pp. 281-288 ◽  
Author(s):  
A. Angelaki ◽  
M. Sakellariou ◽  
D. Pateras ◽  
A. Kungolos
Keyword(s):  
Natural Waters

On methodological approaches to the improvement of surface water bodies and target indicators of the natural waters’ quality

2021 ◽  
Vol 27 (1) ◽  
pp. 6-14
Author(s):  
V. Zaslonovsky ◽  
◽  
N. Sharapov ◽  
M. Bosov ◽  
◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Natural Water ◽  
Aquatic Ecosystems ◽  
Natural Waters ◽  
Water Bodies ◽  
Surface Water Bodies ◽  
Methodological Approaches ◽  
Natural Water Bodies

The paper is devoted to the development of proposals concerning the improvement of surface water bodies and the appointment of target indicators of the natural waters’ quality. The paper considers a variety of problems of preserving, restoring and improving the quality of natural surface waters: from regional features of the formation of natural water composition, to differences in the requirements for the quality of water consumed. The object of the study is the qualitative indicators of the waters of natural water bodies, and the subject of the study is the methodological approaches to the normalization of these indicators. The purpose of the work is to identify the main shortcomings in the domestic system of rationing the quality of natural waters, and to form appropriate proposals. For this purpose, the following tasks were set and solved: to review the methodological approaches to assessing and rationing the quality of natural waters used in some foreign countries and in the Russian Federation, to identify the main causes and shortcomings; to make proposals for improving the current system of water quality rationing. The result of this work is the conclusions about the lack of impact of the strategy operating in Russia in the development of schemes of complex use and protection of water objects, standards of permissible impact on water bodies, the appointment of permissible discharge limits in terms of maintaining and improving the water quality of natural water bodies. The reasons that led to this are indicated. The necessity of taking into account, in addition to the physical and chemical composition, also hydrobiological parameters is shown. It is concluded that instead of fisheries management standards, environmental standards should serve as the basis for target indicators of water quality of natural water bodies, which determine the well-being of humans and the stable functioning of aquatic ecosystems, taking into account regional factors. Proposals were made to adjust the methodological approaches to the implementation of this strategy. According to the authors, these proposals will speed up the solution of the main objectives of the strategy – the ecological improvement of water bodies, the preservation of unique aquatic ecosystems and the environmentally safe development of territories that previously experienced relatively small anthropogenic impacts (Eastern Siberia and the Far East)

Reliability of Several Microorganisms to Indicate the Presence of Salmonella in Natural Waters

1993 ◽  
Vol 27 (3-4) ◽  
pp. 471-474 ◽  
Author(s):  
M. A. Moriñigo ◽  
E. Martinez-Manzanares ◽  
M. A. Muñoz ◽  
M. C. Balebona ◽  
J. J. Borrego
Keyword(s):  
Natural Waters ◽  
Direct Detection ◽  
Microbiological Quality ◽  
Fecal Pollution ◽  
Microbial Quality ◽  
Quality Of Waters

A new index of microbiological quality of natural waters based on the coliphage test is proposed. Levels of coliphages corresponding to the concentrationgs of coliphages (Phgs) lower than 300 pfu/100 ml warrant a good microbial quality of waters affected with fecal pollution. In waters with industrial and domestic pollution Salmonella percentages higher than 5 % were detected even when this proposed index (Ph95) was applied. Thus the direct detection of the pathogen could be more useful in this case.

Interlaboratory Quality Control Study of the Analysis of Water for Pesticides

1977 ◽  
Vol 60 (5) ◽  
pp. 1097-1104
Author(s):  
Keijo I Aspila ◽  
John M Carron ◽  
Alfred S Y Chau
Keyword(s):  
Quality Control ◽  
Organochlorine Pesticides ◽  
Natural Waters ◽  
Direct Injection ◽  
Paired Samples ◽  
Accuracy And Precision ◽  
Quality Control Study ◽  
Working Standards ◽  
Control Study

Abstract An interlaboratory quality control study was conducted to provide information to 5 participating Canadian laboratories on their capability in analyzing natural waters for 10 pesticides. The study was designed to identify the quality of each laboratory’s working standards for 15 organochlorine pesticides, and the accuracy and precision of each laboratory’s analytical procedures. Fifteen samples were provided, of which 3 were standards prepared for direct injection into an electron capture gas chromatograph. Instructions were provided to use these 3 standards for quantitating the pesticide content (8–150 ng/L) in 5 pairs of 1 L water samples. These paired samples contained 10 organochlorine pesticides approaching natural levels. Results of the study indicated that participants were fairly precise and achieved the designed ratio 1.5 for concentrations in the paired samples.

The quality of Albanian natural waters and the human impact

2005 ◽  
Vol 31 (1) ◽  
pp. 133-146 ◽  
Author(s):  
Alqiviadh Cullaj ◽  
Agim Hasko ◽  
Aleko Miho ◽  
Ferdinand Schanz ◽  
Helmut Brandl ◽  
...  
Keyword(s):  
Human Impact ◽  
Natural Waters

scholarly journals Natural objects as an effective means of training students majoring in Chemistry and Biology

2020 ◽  
Vol 2020 (1 (130)) ◽  
pp. 73-82
Author(s):  
Mariia Topchii ◽  
Anatoly Bosenko ◽  
Lyudmila Belyaeva
Keyword(s):  
Natural Waters ◽  
Effective Means ◽  
Control Group ◽  
Quantitative Chemical Analysis ◽  
Qualitative And Quantitative ◽  
Knowledge Based ◽  
Natural Objects ◽  
Level Of Training ◽  
Experimental Group

The purpose of the study is to study the efficiency of students' assimilation of the methods of qualitative and quantitative chemical analysis using the methodical guidelines for the exploitation of highly mineralized natural waters (brines) developed by the professors of the Department of Chemistry (Francisk Skorina Gomel State University). Two groups consisting of 50 students each participated in the study which had been conducted for 3 years: a control group (CG) and an experimental group (EG). The CG students used the solutions elaborated under laboratory conditions, whereas the EG students used natural brines. To determine the features of the brines (solutions) under study these methods were adopted: potentiometric, titrimetric, colorimetric, turbometric, hypochlorite and other methods alongside the statistical analysis. The efficiency of learning was determined by calculating the level of training and the quality of knowledge based on the results of the students’ independent works and computer testing. The students who were trained with the use of the natural objects demonstrated the improved academic outcomes in accordance with corresponding indicators. The training level demonstrated by the CG students varied between 54.1–60.1%; whereas in the experimental group, this indicator ranged from 62.9% to 83.3%. The quality of knowledge in the experimental group was also higher than in the control group: 66.1–73.3% and 57.4–58.8%, respectively. The approbation results of the developed methodical guidelines for studying the basics of sampling, sample preparation as well as the ones of the qualitative and quantitative analyses on the example of natural objects (brines) indicate an increase in the efficiency of the training compared to the standard methods for using laboratory solutions and serve as the basis for their implementation into the process of training future specialists majoring in Chemistry and Biology.

scholarly journals Investigation of factors of the appearance of odor in river water at the water intake of Rostov-On-Don

2021 ◽  
Vol 937 (2) ◽  
pp. 022060
Author(s):  
Denis Butko ◽  
Yana Lazareva ◽  
Marina Sharkova
Keyword(s):  
River Water ◽  
Natural Waters ◽  
Supply System ◽  
Organic Substances ◽  
Water Treatment Plants ◽  
Reagent Treatment ◽  
Don River ◽  
Carbonated Water ◽  
Altered Form

Abstract The paper presents a study of quality of natural waters and water in a centralized water supply system during the period of an increase in the “Smell” indicator in the spring of 2021. The chemical and physical properties of water, the results of quality and quantity of studying the variety I phytoplankton in the most difficult period of deterioration in quality of river water. Low water and exceeding MPC concentrations of organic substances in river water. The Don River causes altered form odorant substance as evidenced by the results of determination in water 1,2,3- t rihlorbenzol and geosmin, hexachloroethane and aniline shown in operation. Barrier function of reagent treatment methods used at water treatment plants in the lower reaches of the river. The Don River, even when combined with carbonated water, is deficient in odor-producing substances.

scholarly journals Mapping of the quality of natural waters: rational approach to the environmental risk of the environmental safety

2019 ◽  
Vol 4 (27) ◽  
pp. 150-154
Author(s):  
A. Danilian ◽  
◽  
N. Tiron-Vorobiova ◽  
O. Romanovska ◽  
◽  
...  
Keyword(s):  
Environmental Risk ◽  
Natural Waters ◽  
Environmental Safety ◽  
Rational Approach

scholarly journals Quality of natural waters in carbonate aquifers at a densely populated Odukpani area of cross river state, Southern Nigeria

2018 ◽  
Vol 4 (1) ◽  
pp. 1463899 ◽  
Author(s):  
Ogbonnaya Igwe ◽  
Stanley Ifediegwu ◽  
Daniel Ozoko ◽  
Giulio Iovine
Keyword(s):  
Natural Waters ◽  
Cross River ◽  
Cross River State ◽  
Carbonate Aquifers ◽  
Southern Nigeria

Adequacy analysis of drinking water treatment technologies in regard to the parameter turbidity, considering the quality of natural waters treated by large-scale WTPs in Brazil

2019 ◽  
Vol 191 (6) ◽  
Author(s):  
Lívia Duarte Ventura Melo ◽  
Elizângela Pinheiro da Costa ◽  
Carolina Cristiane Pinto ◽  
Gabriela Rodrigues Barroso ◽  
Sílvia Corrêa Oliveira
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Large Scale ◽  
Natural Waters ◽  
Drinking Water Treatment ◽  
Treatment Technologies

Kinetics and Mechanism of Ecochemical Processes

2020 ◽  
pp. 109-136
Author(s):  
Sergey Olegovich Travin
Keyword(s):  
Mathematical Modeling ◽  
Numerical Experiment ◽  
Food Chain ◽  
Exponential Growth ◽  
Natural Waters ◽  
Stationary States ◽  
The Cost ◽  
Physical And Chemical ◽  
The Impact

Significant efforts of mankind and huge funds were spent to study the mechanisms of environmental processes. Recent decades have been marked by exponential growth of computer power and the accompanying decrease in the cost of computing. With regard to the mathematical modeling of physical and chemical processes that determine the quality of natural waters, atmosphere, and soil, this has led to the development of an extensive approach based on an increase in the number of components and reactions between them taken into consideration. In this chapter, the authors describe features of ecochemical systems and discuss the moments that complicates their prediction. Using the method of numerical experiment, they investigate the behavior of periodic systems with multiple stationary states. One conclusion is that the actual manifestation cannot be used to determine at what stage the impact occurred and to what stage of the food chain it relates. Another conclusion is that systems involving multiple stationary states are prone to bifurcations and chaotic jumps from one limit cycle to another.

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