scholarly journals Physico-chemical determinant parameters in the color of vertisolization and tirsification processes

2019 ◽  
Vol 19 (2) ◽  
pp. 40-44
Author(s):  
J. M. Recio Espejo ◽  
C. Borja Barrera ◽  
F. Díaz del Olmo ◽  
F. Borja Barrera
Keyword(s):  
Statistical Analysis ◽  
Organic Carbon ◽  
Climatic Conditions ◽  
Parent Material ◽  
Chemical Processes ◽  
Chemical Parameters ◽  
Physical Chemical ◽  
Physico Chemical ◽  
Definitive Role

A statistical analysis is carried out on the influence that certain physico-chemical parameters exert on tirsification and vertisolization pedological processes that occur under certain geomorphological conditions in Andalusia region (Spain). Both processes occur on a parent material with high contents in smectitic clays, massive and uniform and contrasting climatic conditions where periods of humidity and those of drought  alternate. Chromic Vertisol (tirsificated) versus Calcium Vertisol (vertisolizated) (FAO, 2015) shows a greater interrelation between parameters given its greater weathering. Organic carbon controls a large part of its physical-chemical processes where the lateral washing of salts and carbonates together with manganese, always in a lower concentration than iron, play a definitive role in the blackening of its horizons. The chemical fertility is always low and  the geomorphological conditions seems to account for its agricultural capacity.

Assessment of Heavy Metals Content in the Proximity of a Contaminated Site From Cluj-Napoca (Romania)

2020 ◽  
Vol 65 (2) ◽  
pp. 17-37
Author(s):  
Georgiana Grosu ◽  
◽  
Carmen Andreea Roba ◽  
Ramona Bălc ◽  
Maria Lucia Bizău-Cârstea ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Statistical Analysis ◽  
Multivariate Statistical Analysis ◽  
Sediment Contamination ◽  
Contaminated Site ◽  
Pollution Indices ◽  
Chemical Parameters ◽  
Multivariate Statistical ◽  
Water And Sediment ◽  
Physico Chemical

The present study was conducted in the proximity of a contaminated site from Cluj-Napoca city (Cluj County, Romania), where metal processing activities have been carried out for decades. Metal content and physico-chemical parameters were analyzed in soil, water and sediment samples, while organic matter (OM) and total organic carbon (TOC) was additionally analyzed for the soil samples. The sources of heavy metals were evaluated based on multivariate statistical analysis, while the soil and sediment contamination degree was assessed based on specific pollution indices. The calculated indices indicated a significant pollution with Cd and Pb, which may represent a risk if the area would become a residential area. Keywords: heavy metals, contaminated site, soil pollution indices, multivariate statistical analysis, Cluj-Napoca

scholarly journals Seasonal distribution and population dynamics of limnic microalgae and their association with physico-chemical parameters of river Noyyal through multivariate statistical analysis

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Pandian Suresh Kumar ◽  
Jibu Thomas
Keyword(s):  
Statistical Analysis ◽  
Multivariate Statistical Analysis ◽  
Sampling Site ◽  
Principal Component ◽  
Environmental Parameters ◽  
Diversity Indices ◽  
Population Diversity ◽  
Chemical Parameters ◽  
Multivariate Statistical ◽  
Physico Chemical

Abstract The present investigation embarks on understanding the relationship between microalgal species assemblages and their associated physico-chemical parameter dynamics of the catchment region of river Noyyal. Totally, 142 microalgae cultures belonging to 10 different families were isolated from five different sites during four seasons and relative percentage distribution showed that Scenedesmaceae (36.6%) and site S1 (26.4%) with predominant microalgae population. Diversity indices revealed that microalgae communities were characterized by high Hʹ index, lower Simpson dominance, and Margalef index value with indefinite patterns of annual variations. Results showed that variation in the physico-chemical parameters in each sampling site has its impact on the microalgae population during each season. Multivariate statistical analysis viz., Karl Pearson’s correlation coefficient, principal component analysis, and canonical correspondence analysis were applied on microalgae species data, to evaluate the seasonal relationship between microalgae and physico-chemical parameters. The findings of our study concluded that the physico- chemical parameters influenced the dominant taxa of microalgae Chlorellaceae, Scenedesmaceae and Chlorococcaceae in river Noyyal and gives a base data for the seasonal and dynamic relationship between environmental parameters and microalgae population.

scholarly journals Studies on some Physico-Chemical Parameters of Cyanophycean Members and Correlation Coefficient of Eutrophic Ponds in Chidambaram, Tamil Nadu, India

2014 ◽  
Vol 16 ◽  
pp. 145-156 ◽  
Author(s):  
B. Elayaraj ◽  
M. Selvaraju
Keyword(s):  
Statistical Analysis ◽  
Correlation Coefficient ◽  
Tamil Nadu ◽  
Pond Water ◽  
Chemical Parameters ◽  
Correlation Studies ◽  
Physico Chemical ◽  
Coefficient Corrélation ◽  
The Relationship

The present study deals with the statistical analysis of physico-chemical parameters and cyanophycean members of two pond water quality of Chidambaram, Cuddalore district (Tamil Nadu). The qualities of pond water were analyzed for six months. Eleven important parameters were included in statistical analysis. The qualities of pond water have been assessed by calculating mean, standard deviation and correlation coefficient. Correlation studies of hydrobiology with physico-chemical parameters revealed that the relationship between phytoplankton density in general and that of the specific groups are highly complex and often controlled by interactions of different factors. In the both pond water the correlation coefficient test revealed that cyanophycean members positively correlated with temperature, pH, CO2, alkalinity, hardness, nitrate, BOD and COD at 1 % and 5 % level significant, where as it is negatively correlated with acidity and dissolved oxygen. In the present study it can be concluded that the cyanophycean members are highly tolerant organisms. They prefer to grow at higher temperatures and in highly alkaline, BOD and COD waters. Hence they can with stand high levels of contaminated waters of Thillai Kali Kovil pond, when compared to Ilamiyakkinar Kovil pond.

scholarly journals Evaluation of physico-chemical and microbiological parameters of Jhajjar rivulet of J&K

2014 ◽  
Vol 15 (1&2) ◽  
pp. 95-98
Author(s):  
Indu Bhushan Sharma ◽  
Arvind Kumar Yadav ◽  
Vijeshwar Verma
Keyword(s):  
Water Samples ◽  
Microbial Contamination ◽  
Well Being ◽  
Total Hardness ◽  
Pollution Load ◽  
Chemical Parameters ◽  
Physical Chemical ◽  
Physico Chemical ◽  
Microbiological Parameters ◽  
Health And Well Being

Water quality is an index of health and well being of a society. The pollution of water bodies is one of the areas of major concern to environment. In the present investigation an attempt has been made to evaluate the physical, chemical and microbiological parameters of Jhajjar rivulet of J&K. The study has been carried out by taking water samples at three different sites of the rivulet i.e. site 1, site 2 and site3. During the study, the physico-chemical parameters like pH, temperature, colour, total hardness, BOD, COD, DO, TDS and TSS in the water samples were studied. In microbiological examination, the presence of coliform in the water samples were studied.  It has been observed that there was a pollution load mostly at site 3 and slightly at site 2, it may be due to the release of huge quantities of sewage, effluent and manmade activities at the respective sites but the water from all the sites was found free from microbial contamination. It was concluded that water at site 1 is suitable for drinking as compared to site 2 and site 3 of the rivulet.

scholarly journals The Diversity of Makrozoobenthos as Bio-Indicators of Water Quality of the River Kundur District Labuhanbatu

2021 ◽  
Vol 4 (1) ◽  
pp. 1027-1033
Author(s):  
Winarti Winarti ◽  
Arman Harahap
Keyword(s):  
Total Abundance ◽  
Chemical Parameters ◽  
Observation Station ◽  
Physical Chemical ◽  
Physico Chemical ◽  
Physical And Chemical Parameters ◽  
The Individual ◽  
Physical And Chemical ◽  
Chemical Water

Macrozoobenthos used as a bioindicator of the waters, this happens because of the nature of the benthos which has mpergerakan low so it got a lot of influence from the environment. This study aims to determine the condition of the river Kundur with a view the community structure of macrozoobenthos which include: species composition, abundance, diversity, uniformity and dominance as well as the physical and chemical parameters of water as a paremeter supporters. Based on the results of observations, macrozoobenthos were found during the study in the river Kundur consists of 3 phylum, 4 classes, 17 family with 11 species. The composition of the class of macrozoobenthos in the whole of the observation station consists of a Gastropod (37%), Insecta (23%), Malacostraca (20%), Polychaeta (10%) dan Malacostraca (20%). The value of an abundance ranged from 325,7 - 3309,6 ind/m3. With the value of the total abundance at Station I which is equal to 3690,1 ind/m3, Station II 3723,1 ind/m3, Station III 3692,3 ind/m3 can be categorized diversity are light polluted with the value of the index of uniformity (E) that describes the spread of the individual tends to be uniform or relatively the same. While the condition of the physical-chemical parameters and the substrate bottom of the river Kundur in general has a range of relatively homogeneous, spread evenly throughout the observation stations and still be able to support life macrozoobenthos. To the results of measurements of the parameters of physico-chemical water and substrate in the river kundur in general has a range of relatively homogeneous in the whole observation stations and still be able to support the life of the macrozoobenthos.

Hydodynamic behaviour and faecal coliform removal in a maturation pond

2000 ◽  
Vol 42 (10-11) ◽  
pp. 119-126 ◽  
Author(s):  
F. Brissaud ◽  
V. Lazarova ◽  
C. Ducoup ◽  
C. Joseph ◽  
B. Levine ◽  
...  
Keyword(s):  
Retention Time ◽  
Time Distribution ◽  
Tracer Test ◽  
Climatic Conditions ◽  
Faecal Coliform ◽  
Good Prediction ◽  
Tracer Study ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Tracer Distribution

A tracer test was performed in a 3,000 m3 and 1 m deep maturation pond located in the south of France. A retention time distribution was determined on the basis of tracer study. Tracer distribution into the pond was also monitored. Physico-chemical parameters and faecal coliform contents were measured at pond inlet and outlet and at 4 points in the pond. During the same period, two 20 m3 and 1 m deep pilot pools were set close to the pond and filled with inlet water. A die-off constant was calculated after the variations of feacal coliform contents observed in the pilot pools. The objective was to verify whether faecal coliform removal can be predicted from observed retention time distribution, assuming a first-order faecal coliform decay with a die-off constant determined in pilot pools. A very good prediction was achieved despite some uncertainties in the experimental data mainly due to pond operation and climatic conditions.

Obtaining Food Flours through the Drying of Tamarind Fruits

2020 ◽  
Vol 25 ◽  
pp. 1-8
Author(s):  
A.X. Mesquita de Queiroga ◽  
O. Soares da Silva ◽  
F. Bezerra da Costa ◽  
G.N. Barros Sales ◽  
K. Gomes da Silva ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Sugar Content ◽  
Chemical Characterization ◽  
Climatic Conditions ◽  
Good Source ◽  
Seed Flour ◽  
Physical Chemical ◽  
Physico Chemical ◽  
Different Types ◽  
The Ideal

Tamarind is a fruit of foreign origin, more precisely African, but it has an excellent adaptation to the different types of climatic conditions in other continents. In Brazil, for example, it is possible to find it in several states. Although tamarind has a considerable yield on both its constituent parts, shell, pulp and seeds, and have a low purchasing power, the fruit is largely wasted and there are few in-depth studies on the same. As a way of reuse, the aim was to transform the fruit into new products, such as flours used in human food. The objective of this study was to make the drying of the tamarind fruits to obtain the ideal characteristics for the development of a food flour and to evaluate the physical-chemical quality and to determine the bioactive compounds of the tamarind flour. Drying was done at 60 °C in a greenhouse, during different drying periods, which varied according to each part of the fruit, after which the flours were elaborated and characterized for the physicochemical and bioactive parameters. In the physico-chemical characterization, a good presence of proteins in the seed flour (7.09%), low sugar content in the pulp flour (0.74%), good values ​​for lipids in the seed flour (3, 41%) and good ash values in the bark flour (2.69%). In general, the flour besides proteins had a good source of energy and minerals. Among the bioactive compounds present in the tamarind flour were the high contents of phenolic compounds (1564.9 mg/100g), vitamin C (80.95%), lycopene (89.62 mg/g), flavonoids (20.44 mg/100g) and anthocyanins (12.84mg / 10g) in the seed flour, carotenoids (20.80 mg/g) in the pulp flour. In general, flours produced from tamarind had excellent characteristics for the preparation of bakery products.

scholarly journals Dynamics of the Physico-chemical Properties of Sediments along the Bandama River in the Department of Niakaramadougou, Northern Côte d’Ivoire

2019 ◽  
pp. 739-750
Author(s):  
N’Doufou Gnosseith Huberson Claver ◽  
Kouadio Koffi Hypolithe ◽  
De Lasm Omer Zephir ◽  
Zogoury Eddie Constant Fabrice
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Chemical Properties ◽  
Statistical Analyses ◽  
The Other ◽  
Eastern Shore ◽  
Chemical Parameters ◽  
Sediment Analysis ◽  
Granulometric Analysis ◽  
Physico Chemical

This work focuses on analyzing of physico-chemical properties of sediment affected by frequent floods along the eastern shore of the Bandama River in the department of Niakaramadougou. Sampling was from 4 excavated graves at two positions of studied area, one near the stream and the other one far away from the stream.. Samples collected were analyzed, including texture with granulometric analysis made by the Robinson pipette, and standard sediment analysis methods for measuring organic carbon (OC), nitrogen (N), and other chemical properties including pH, organic matter (OM), and C/N ratio. Statistical analyses were carried out to assess the differences between the physico-chemical parameters at different sampling areas. Differences are significant when comparing areas that are highly affected by floods and areas that are less affected by floods, especially for concentrations of OM, OC and nitrogen. Results show that successive floods are influencing directly the dynamic of physico-chemical properties of the sediments along the shore.

scholarly journals ECOLOGICAL CHARACTERISTICS OF THE DIFFERENT ECOSYSTEMS in COASTAL areas OF THE ANDAMAN ISLANDS

1970 ◽  
pp. 21-29
Author(s):  
E. Dilipan ◽  
E.P. Nobi ◽  
T. Thangaradjou
Keyword(s):  
Climatic Conditions ◽  
Nutrient Level ◽  
Optimum Level ◽  
Andaman Islands ◽  
Chemical Parameters ◽  
Sampling Locations ◽  
Physico Chemical ◽  
Faunal Communities ◽  
Tourism Activity ◽  
Secondary Productivity

Coastal ecosystems are well known for their higher primary and secondary productivity and support of diverse floral and faunal communities.  Especially coral reef and seagrasses create, as well as occupy, important niches in shallow water environments.  Physico- chemical characteristics of the critical habitats (Mangrove, seagrass, dead coral bed and sandy beach) of Andaman islands were studied.  Physico-chemical parameters recorded in 18 stations showed distinct variations among different ecosystems, especially chemical parameters showed notable variations in all these ecosystems. Sediment characters showed significant variations: pH of the sediments varied between 8.1 and 8.6 in all the sampling locations and the electrical conductivity of the sediments varied between 2.1 and 4.1dSm-1. Sediment nutrients varied widely: nitrogen (22-52 kg/acre), phosphorus (10-15 kg/acre) and potassium (55-73 kg/acre). Though the physico-chemical parameters showed distinct variations among different ecosystems, they are within the optimum range reported for the specific ecosystems prevailing in the area. In general, the nutrient level of water in the seagrass and mangroves was low when compared similar ecosystems of the mainland. It is important to note that, though the ambient water quality of these ecosystems is at the optimum level reported for the respective ecosystems, proper attention should be paid to maintain the subtle nature of the ecosystems of the islands, under the post-tsunamic geomorphological variations, increasing national and international tourism activity and the changing climatic conditions.

Sign in / Sign up

Export Citation Format

Share Document