scholarly journals THE CONTENT JF IRON AND MANGANESE IN THE AQUIFER OF THE QUATERNARY SEDIMENTS OF THE SOUTH MINUSINSK BASIN

2020 ◽  
Author(s):  
E.V. Vashchenko ◽  
◽  
P.A. Zubritskiy ◽  
A.L. Lelekova ◽  
◽  
...  
Keyword(s):  
Manganese Content ◽  
Total Hardness ◽  
Quaternary Sediments ◽  
The South ◽  
Minusinsk Basin ◽  
Observation Wells ◽  
Iron And Manganese

The results of research for 2014–2019 for 16 observation wells – indicators of total hardness, iron and manganese content-were processed. On the example of the site located in the area of Ust-Abakan and Chernogorsk, the analysis of factors that determine the increased concentrations of manganese and iron was carried out.

ETERMINATION IRON AND MANGANESE CONTENT IN MOTOR FUELS

2017 ◽  
Vol 59 (2) ◽  
pp. 097-102
Author(s):  
Anastasiya A. Kotlova ◽  
◽  
Ilya A. Belous ◽  
Anastasiya V. Kiyashko ◽  
Roman S. Edigarev ◽  
...  
Keyword(s):  
Manganese Content ◽  
Motor Fuels ◽  
Iron And Manganese

scholarly journals THE IRON AND MANGANESE CONTENT OF FEEDING STUFFS

1928 ◽  
Vol 79 (2) ◽  
pp. 679-687
Author(s):  
J.T. Skinner ◽  
W.H. Peterson
Keyword(s):  
Manganese Content ◽  
Iron And Manganese

scholarly journals Monitoring and assessment of well quality of water   infiltration intakes in water reservoirs in the   south‐east of Belarus

2019 ◽  
Vol 14 (3) ◽  
pp. 53-60
Author(s):  
D. V. Makarov ◽  
E. A. Kantor ◽  
N. A. Krasulina ◽  
Z. Z. Berezhnova ◽  
Yu. S. Savicheva
Keyword(s):  
Water Quality ◽  
Ph Value ◽  
Pair Correlation ◽  
Total Iron ◽  
Water Infiltration ◽  
Total Hardness ◽  
Eastern Region ◽  
The South ◽  
Quality Of Water ◽  
The Republic

Aim. Comparison of water quality according to 19 indicators: odour at 20°C, odour  at 60°C, taste, colour, turbidity, total iron, permanganate oxidation, dry residue,  total hardness, oil products, surfactants, phenolic index, nitrates (NO3‐), chlorides  (Сl‐), fluorides (F‐), sulphates (SO42‐), zinc (Zn2+), copper (Сu, total), pH value of two  infiltration water intakes in the south‐eastern region of the Republic of Belarus.  Identification and analysis of linear trends, and determination of trends in the dynamics of indicator values. Material and Methods. As initial data we used the results of quarterly measurements of the values of borehole water indicators of the infiltration water intakes.   Results. By comparing the relative concentrations of the mean annual values of the  studied quality indicators for two water intakes, it was revealed that the priority  indicators are odour at 20°C, odour at 60°C, taste, chromaticity, turbidity, and iron.  By comparing the relative concentrations of total iron, it was found that the concentration in the wells of WI 1 is much higher than in the wells of WI 2, probably  due to the presence of rocks and minerals from moraine and fluvioglacial complexes of glacial deposits. For other indicators the values were approximately on the  same level. Conclusion. By constructing matrices of pair correlation and geographic proximity  for each of the priority indicators, well groups were identified whose water quality  is interrelated and which were subsequently aggregated as a single group. 

scholarly journals Constraints on the precision of SAR in equivalent dose estimations close to saturation in quartz

2011 ◽  
Vol 38 (4) ◽  
pp. 413-423 ◽  
Author(s):  
Constantin Athanassas
Keyword(s):  
Growth Curve ◽  
Late Quaternary ◽  
Equivalent Dose ◽  
Curve Shape ◽  
Large Scatter ◽  
Dose Estimation ◽  
Quaternary Sediments ◽  
The South ◽  
Of Greece

Abstract Difficulties in evaluating accurate equivalent doses for Late Quaternary sediments from the south coasts of Greece arose in the course of SAR measurements. Large scatter among apparent equivalent doses perplexed the evaluation of accurate mean estimates in circumstances where very large doses were involved. Besides, dose recovery experiments revealed that when intersection of the natural signal occurs onto the saturating segment of the growth curve, a distinct relationship between De and growth curve shape occurs. At very low slope angles, SAR tends to overestimate the recovered dose. The mechanism which controls the spread in equivalent dose estimation is investigated.

scholarly journals ON THE USE OF KRIGING MODEL CONCEPT TO DETECT GROUNDWATER POTENTIAL ZONES IN HILLY DUTSIN-MA, NORTHWESTERN NIGERIA

2020 ◽  
Vol 8 (1) ◽  
pp. 33-50
Author(s):  
Kankara A. ◽  
Keyword(s):  
Health Hazard ◽  
Kriging Model ◽  
Total Dissolved Solids ◽  
Field Investigation ◽  
Total Hardness ◽  
Human Consumption ◽  
Chemical Analyses ◽  
Model Concept ◽  
Dissolved Solids ◽  
Iron And Manganese

In this present study, the geology, relief, spatial variation and challenges of groundwater quality has been carried out, using Kriging Model. The methodology employed was drawn from primary and secondary data sources. Detailed chemical analyses for some of the parameters of the groundwater were done on a total of twenty-one (21) samples of both hand-dug wells and borehole waters collected during the full field investigation. In the laboratory analysis, the AAS and XRF machines were used to analyze eight (8) samples, namely: Temperature, pH, Total Dissolved Solids (TDS), EC, Total Hardness, Lead, Iron, and manganese. The results of the chemical analyses which were akin to groundwater geochemical characterization based on the ranges of parameters shows that the value of pH in the study area ranges from (6.53 to 7.30), The Total Dissolved Solids ranges between (0.00 to 24.00), the EC has concentrations between (0.06 to 22.00) which was also around the permissible units of both SON and WHO. Total Hardness of the samples of the area run from lowest concentrations of (60 to 3915) which does not exceed the SON permissible unit, but exceed the recommended limit of WHO. The corresponding limited ranges of iron and manganese ranges from (0.53 to 15.24 and 0.4 to 3.35),the concentrations of Lead from lowest to highest were (0.74 to 2.31), both of which defy the recommended limits of WHO (0.05) and that of SON (0.01). Based on this, it was concluded that some of the groundwater sources assessed are safe for human consumption. If the practice of consuming groundwater without treatment continues, it may lead to health hazard.. ANOVA-F (One Way) was adopted in testing the hypothesis (Calculated F=6.63 while Critical F=2.16). The study recommended that appropriate measures should be taken to bring the higher concentrated parameters to desired levels.

scholarly journals An assessment of groundwater quality in South-West zone of Surat city

2021 ◽  
Author(s):  
Ankit N. Chaudhari ◽  
Darshan J. Mehta ◽  
Dr. Neeraj D. Sharma
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Ground Water ◽  
Coastal Region ◽  
Total Dissolved Solids ◽  
Total Hardness ◽  
Ground Water Quality ◽  
The South ◽  
South West ◽  
The People

Abstract Groundwater quality alludes to the state of the water that is arranged under the Earth's surface. Groundwater can accumulate in breaks in subsurface rocks and the centre of soil particles. Since various blends can break down in water and others can be suspended in water, there is a potential for pollution with harmful mixes including significant particles like Electrical Conductivity (EC), Total Dissolved Solids (TDS), and many others i.e. Ca, Cl, F, Mg, NO3, SO4, and Total Hardness. This study examines Groundwater Quality in the study area of the South-West zone of Surat city, Gujarat. The South-West zone of Surat city is situated on the shoreline, causes the groundwater of the concerned area highly affected by seawater intrusion. The present study determines the Ground Water Quality Index (GWQI) from the year 2006 to 2015. It also predicts the approximate ground water quality for the next 10 years. The outcome of this study suggests the need of certain improvement in ground water quality by an appropriate method such as Managed Aquifer Recharging (MAR). It will be beneficial for the people mainly dependent on the ground water, particularly living near the coastal region.

scholarly journals Initial understanding and assessment of role of oceanographic features for ferromanganese crusts and nodules in the East Vietnam Sea

2020 ◽  
Vol 20 (4) ◽  
pp. 383-397
Author(s):  
Bui Hong Long ◽  
Phan Minh Thu ◽  
Nguyen Nhu Trung
Keyword(s):  
Manganese Content ◽  
Chemical Processes ◽  
Biological Processes ◽  
Dissolved Oxygen Concentration ◽  
Ferromanganese Crusts ◽  
Polymetallic Nodules ◽  
Continental Slopes ◽  
Initial Results ◽  
Iron And Manganese

The iron and manganese content in marine water is very small but the volume of ferromanganese nodules contributes 30% of the total mass of polymetallic nodules and crusts in marine and ocean floor. This suggests that the process of enrichment of ferromanganese crusts and nodules is not only contributed by chemical processes but also by oceanographical and biological processes. The article indicates the initial results of analyzing oceanographic, biological, and environmental features to understand their roles in the growing ferromanganese crusts and nodules and to predict the distribution of ferromanganese crusts and nodules in the East Vietnam Sea. As a result, ferromanganese crusts and nodules in the East Vietnam Sea can be distributed in the continental slopes, where upwelling and downwelling currents occur, to ensure enough dissolved oxygen concentration for the enrichment of ferromanganese crusts and nodules as well as to meet required conditions for microbial activity, which is involved in these processes. However, due to the limitations of the results of studying the enrichment of ferromanganese crusts and nodules in the East Vietnam Sea, the paper just shows the prediction of the distribution of ferromanganese crusts and nodules. Thus, it is necessary to carry out the expedition for enrichment processes of ferromanganese crusts and nodules and to determine the factors that impacted the growing ferromanganese crusts and nodules in the East Vietnam Sea.

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