Fluctuations of Annual Precipitation and Water Resources Quality in Ukraine

2016 ◽  
Vol 10 (4s) ◽  
pp. 621-629
Author(s):  
Valentina Pidlisnyuk ◽  
◽  
John Harrington JR ◽  
Yulia Melnyk ◽  
Yuliya Vystavna ◽  
...  
Keyword(s):  
Water Resources ◽  
Surface Waters ◽  
Precipitation Amount ◽  
Ion Concentration ◽  
Annual Precipitation ◽  
Resource Quality ◽  
Phosphate Ion ◽  
Regional Trends

The article focuses on examining the influence of fluctuations in annual precipitation amount on the quality of surface waters. Water quality was estimated with data on BOD, COD and phosphate–ion concentration within five selected regions of Ukraine. Analysis of the precipitation data (1991 – 2010) showed different regional trends. Using the statistics, determination of the interconnection between precipitation amount and water resources quality were done. The obtained regularities and associated uncertainties can be used for prediction of changes in water resource quality and as a guide for future adaptation to possible climate change.

scholarly journals Determination of Trace Metal Ions in Common Salt by Stripping Voltammetry

1999 ◽  
Vol 82 (6) ◽  
pp. 1413-1418 ◽  
Author(s):  
Azza M M Ali
Keyword(s):  
Metal Ion ◽  
Supporting Electrolyte ◽  
Standard Addition ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Ion Concentration ◽  
Common Salt ◽  
Trace Metal Ions

Abstract Sensitive voltammetric methods using cathodic and anodic differential pulse stripping techniques were applied for determination of trace ions cadmium(II), cobalt(II), copper(II), lead(II), manganese(II), nickel(II), and zinc(II), which are usually found in different grades of common salt as contaminants. The optimal conditions, i.e., deposition time, preconcentration potential, supporting electrolyte, and ionic strength, were investigated for each metal ion. Concentration of the metal ion was determined by the standard addition method. Metal content varied according to the quality of the table salt.

Understanding and Efficiently Manipulating Environmental Stress Caused by Metal Ions to Improve Ethanol Fermentation

2021 ◽  
Author(s):  
Boontiwa Ninchan ◽  
Chollada Sirisatesuwon ◽  
Kittipong Rattanaporn ◽  
Klanarong Sriroth
Keyword(s):  
Metal Ions ◽  
Ethanol Production ◽  
Ethanol Fermentation ◽  
Production Efficiency ◽  
Sucrose Solution ◽  
Ion Concentration ◽  
Strong Inhibitor ◽  
Ion Removal

The inconsistent quality of molasses directly influences ethanol production, particularly due to contamination by metal ions that causes severe problems and reduces production efficiency. This research focused on calcium (Ca2+), potassium (K+), and magnesium (Mg2+) ions that are common in molasses. The key objective was to understand clearly the effect of ions on ethanol fermentation and Saccharomyces cerevisiae performance. Individual ions and ion mixtures were studied in sucrose solution and in molasses. The results showed that severe stress could be ordered as Ca2+>K+>Mg2+ and the adverse effect was greater when the ion concentration increased. Ca2+ was a strong inhibitor while trace amounts of Mg2+ produced a positive effect. To achieve the greatest efficiency in ethanol production using molasses in the substrate preparation, Ca2+ should not exceed 0.18% (w/w) prior to fermentation and the final sugar concentration should be 20–25% (w/v), as adjusting the addition of sucrose will result in a suitable yeast medium. Pretreatment and dilution were the best practices for ion removal, with Ca2+ being clearly decreased. Furthermore, determination of the composition and ion concentration in molasses are essential initial steps that must be routinely applied to ensure that the knowledge gained and the efficient techniques investigated can both be used to improve ethanol production.

DETERMINATION OF THE LEVEL OF POLLUTION OF WATER RESOURCES

2021 ◽  
pp. 158-162
Author(s):  
Iryna Chushkina ◽  
Natalia Maksimova
Keyword(s):  
Water Resources ◽  
Integrated Assessment ◽  
Laboratory Studies ◽  
Surface Water Pollution ◽  
Quality Of Water ◽  
Local Water ◽  
The Village ◽  
Integrated Estimation

The based on the data of laboratory studies, an integrated assessment of the quality of water resources the village of Mala Belozerka. Analytical researches have search character of an integrated estimation of level of pollution of district and are executed by a method which is offered by researchers Kryzhanovsky E.M. and Davydov I.V., is of a recommended nature and based on the algorithm of the officially approved methodology of the KND 211.1.1.106 "Organization and implementation of observations of surface water pollution (in the system of the Ministry of Energy)". According to the results of the calculation of the total pollution rate, it was found that the local water resources are characterized as dirty, despite the relatively high quality of groundwater, which is used as a source for drinking water supply to the rural population.

scholarly journals The Quality of Finnish Surface Waters and Future Trends

1977 ◽  
Vol 8 (5) ◽  
pp. 289-296
Author(s):  
Seppo E. Mustonen
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Water Resources ◽  
Surface Waters ◽  
Pollution Control ◽  
Coastal Areas ◽  
Future Trends ◽  
Waste Waters ◽  
Rapid Deterioration

Finland's water resources are abundant and can be considered adequate to meet needs except in some coastal areas. This abundance was previously considered so obvious that water resources were used carelessly, without a thought to the harmful changes in water quality caused by the reckless use of lakes e.g. for discharging waste waters. In the late 1950's people finally perceived the rapid deterioration of Finland's beautiful lakes. An administration for water pollution control was established and a new Water Act was passed at the beginning of the 1960's. Since then the fight for clean waters has continued with varying success. What is the state of Finnish surface waters now, and what are the prospects for the future?

ANALISIS KUALITAS AIR DAN BEBAN PENCEMAR DI SUNGAI BATU KAMBING, SUNGAI MALI-MALI DAN SUNGAI RIAM KIWA KECAMATAN ARANIO KABUPATEN BANJAR KALIMANTAN SELATAN

2017 ◽  
Vol 6 (2) ◽  
pp. 14
Author(s):  
Chiptya Adhey Noumy ◽  
Zairina Yasmi ◽  
Abdur Rahman
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Water Resources ◽  
Quality Standard ◽  
Pollution Load ◽  
Pollutant Load ◽  
Standard Quality ◽  
Load Analysis

Penelitian ini bertujuan untuk mengetahui mutu kualitas air dari kegiatan Keramba Jaring Apung (KJA) berdasarkan Indek Pencemar dan Baku Mutu Kualitas Air yang ditetapkan pada PP 82 Tahun 2001 pada  Daerah Aliran Sungai Batu Kambing, Riam Kiwa dan Sungai Mali-Mali.Penelitian ini menggunakan metode analisis beban pencemar dan Indeks Pencemar berdasarkan Kep.MenLH Nomor 115 Tahun 2003, Kep.MenLH Nomor 110 tahun 2003 tentang pPedoman Penetapan beban Pencemaran Air pada Sumber Air dan analisis Laboratorium.Dari hasil penelitian diperoleh hasil Beban Pencemar (BP) dari masing – masing stasiun yaitu : Stasiun 1 (Batu Kambing) kadar PO4 berkisar 0,40 kg/hari dan NO3 berkisar 0,36 kg/hari. Stasiun 2 (Riam Kiwa) untuk kadar PO4 berkisar 0,42 kg/hari dan NO3 berkisar 0,012 kg/hari. Dan Stasiun 3 (Mali  - Mali) kadar  PO4 berkisar 1,27 kg/hari sedangkan NO3 berkisar 0,11 kg/hari. Sungai Batu Kambing, Sungai Riam Kiwa dan Sungai Mali – Mali termasuk dalam kategori tercemar ringan. This study aims to determine the water quality of the activities Keramba Jaring Apung (KJA) based on Pollutant Index and Air Quality Standard Quality specified in PP.  82/2001 on Watershed of Batu Kambing, Riam Kiwa and Mali-Mali.This study uses pollutant load analysis and Pollutant Index based Kep.MenLH No. 115 of 2003, Kep.MenLH No. 110/2003 on Based Determination of Water Pollution load on Water Resources and laboratory analysis.From the research results Pollutant Load (BP) of each - each station are: Station 1 (Batu Kambing) PO4 levels ranging from 0.40 kg/day and NO3 ranging from 0.36 kg/day. Station 2 (Riam Kiwa) for PO4 levels ranging from 0.42 kg/day and NO3 ranging from 0,012 kg/day. Station 3 (Mali – Mali river) PO4 levels ranging from 1.27 kg/day, while NO3 ranging from 0.11 kg/day. Batu Kambing river,  Riam Kiwa and Mali – Mali rivers included in the category of lightly polluted.

scholarly journals Monitoring the quality of surface water resources of the Almaty region

2020 ◽  
Vol 78 (4) ◽  
pp. 303-311
Keyword(s):  
Heavy Metals ◽  
Surface Water ◽  
Water Resources ◽  
Surface Waters ◽  
Industrial Production ◽  
Underground Water ◽  
Ecological State ◽  
Surface Water Resources ◽  
Chemical Pollutants

The target analyzes the features of rationing the content of chemical pollutants, heavy metals in surface waters, and the results of basic monitoring of these groundwaters. To identify chemical pollutants, several nuclei of the studied region are examined. The paper considered the issues of the ecological state of underground water under the influence of anthropogenic (in particular, industrial production) impacts.

scholarly journals UTILIZAÇÃO DO MAPEAMENTO HIDROQUÍMICO PARA AVALIAÇÃO DA QUALIDADE DAS ÁGUAS SUPERFICIAIS DA BACIA DO RIO SÃO MIGUEL, MINAS GERAIS

2018 ◽  
Author(s):  
Thiago Nogueira Lucon ◽  
Adivane Terezinha Costa ◽  
Bruna de Oliveira Meyer ◽  
Pedro Henrique Silva Assunção ◽  
Leon Dias Oliveira
Keyword(s):  
San Francisco ◽  
Surface Waters ◽  
Physicochemical Parameters ◽  
Quality Evaluation ◽  
Minas Gerais ◽  
Karst Region ◽  
Major Cations ◽  
Aluminum Iron

Resumo:A área em estudo contempla a bacia do rio São Miguel (≈520 km2), afluente do rio São Francisco, situada na província cárstica de Arcos-Pains e inserida na Bacia Hidrográfica do Alto São Francisco (235.635 km2). Com o objetivo de avaliar preliminarmente a utilização do mapeamento hidroquímico para verificar espacialmente a qualidade das águas superficiais, foram realizadas análises hidroquímicas em 34 pontos da bacia em apreço durante uma estação seca e uma chuvosa. As análises incluíram a determinação de parâmetros físico-químicos (temperatura, pH, Eh, CE, STD, oxigênio dissolvido e turbidez), assim como a concentração de ânions (NO3-, PO43-, HCO3-, SO42- e Cl-), cátions maiores e elementos traço. Os dados foram tratados e comparados com os valores estabelecidos pela legislação Conama nº 357 (2005) para aguas da classe 1 os quais balizaram os valores plotados nos mapas hidroquímicos, facilitando, desta maneira, a visualização dos locais que violaram o limite. Foram observados valores acima dos permitidos para as concentrações de nitrato, alumínio, ferro, cádmio, manganês e turbidez.Palavras Chave: Carste, Alto São Francisco, Arcos-Pains Abstract:USE OF HYDROCHEMICAL MAPPING FOR QUALITY EVALUATION OF SURFACE WATERS, SÃO MIGUEL RIVER BASIN, MINAS GERAIS. The study aimed to check the waters quality of the karst region of the São Miguel River (≈520 Km2), a tributary of the São Francisco river, located in the karst province of Arcos-Pains, and belonging to the Upper San Francisco Basin (235,635 Km2). In order to evaluate the quality of surface waters with the use of hydrochemical mapping, chemical analyzes were performed in 34 basin sites during the dry season and the rainy season. The analysis included the determination of physicochemical parameters (temperature, pH, Eh, CE, STD, dissolved oxygen and turbidity), as well as the concentration of anions (NO3-, PO43-, HCO3-, SO42- and Cl-), and major cations and trace elements. The data were treated and compared with the legal parameters which marked the ranges of isovalues plotted in the hydrochemical maps through the software Arcgis 10.1, facilitating in this way the visualization of the anomalies. Anomalies were observed in relation to the maximum values for turbidity and the concentrations of nitrate, aluminum, iron, cadmium and manganese.Keywords: Karst, Upper São Francisco, Arcos-Pains

Tingkat Pemahaman Kompetensi Guru Pada Mahasiswa Pendidikan Geografi Sebagai Calon Guru Geografi

2020 ◽  
Vol 21 (1) ◽  
pp. 102-117
Author(s):  
Novia Zalmita ◽  
Muhajirah Muhajirah ◽  
Abdul Wahab Abdi
Keyword(s):  
Prospective Teachers ◽  
Prospective Teacher ◽  
Quantitative Description ◽  
Population Data ◽  
Geography Education ◽  
Teacher Competence ◽  
Education Department ◽  
Long Time

One that influences human resource indicators is education. The teacher is a profession as a job of academic specialization in a relatively long time in college. Understanding related to teacher competence is very important to have by a prospective teacher because it can affect the quality of performance as a professional teacher. The teacher's competence is known as pedagogic, professional, social and personality competencies. The issue in this study is how the competency of the teacher of the Department of Geography Education FKIP Unsyiah as a prospective teacher of geography? The purpose of this study was to determine the competence of teachers in the Department of Geography Education FKIP Unsyiah as prospective geography teachers. Quantitative description approach is used in this study to find answers to the issue. The population in this study were students of the Department of Geography Education FKIP Unsyiah class of 2015 and 2016 who had been declared to have passed the Micro Teaching and Magang Kependidikan 3 course totaling 50 people. Because the population is small and can be reached, the determination of the sample using total sampling techniques so that the sample in this study is the whole population. Data collection is done by distributing test questions to respondents. The data was analyzed using the descriptive statistics percentage formula. The results of the study indicate that the level of teacher competence of Geography Education Department students as prospective teachers is in the moderate category, namely as many as 22 respondents (44%). A total of 12 respondents (24%) were in the high category, 15 respondents (30%) were in the low category and 1 respondent (2%) were in the very low category.

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