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

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.

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Dynamics of Sediment Organic Matter along Bandama River in the Department of Sinématiali, Northern Côte d’Ivoire

Asian Journal of Environment & Ecology ◽

10.9734/ajee/2019/v11i130129 ◽

2019 ◽

pp. 1-14

Author(s):

N’doufou Gnosseith Huberson Claver ◽

Kouadio Koffi Hypolithe ◽

Nangah Krogba Yves ◽

Tra Bi Djè Frederic

Keyword(s):

Organic Matter ◽

Organic Carbon ◽

Surface Sediments ◽

Chemical Properties ◽

Total Organic Matter ◽

Chemical Parameters ◽

Physico Chemical ◽

Study Sites ◽

Aggregation Analysis ◽

Periodic Flooding

This study examines the distribution of organic matter in areas affected by frequent floods along the east bank of the Bandama River in the department of Sinématiali. The sites sampled are defined by two zones, one near the stream and one far from the stream. Samples collected were analyzed, including for texture with aggregation analysis by the Robinson pipette, and standard sediment analysis methods for measuring organic carbon (CO), nitrogen (N), and organic matter (MO). Statistical analyzes were carried out to assess the differences between the physico-chemical parameters of the different sampling areas. Results show that sediment from the various study sites has a sando-limonous to limono-clay texture. Total organic matter levels are higher in surface sediments that contain the lowest proportions of clay. Rates range from 31.98 gkg-1 to 38.98 gkg-1. In depth, the rates obtained are very low and range from 6.3 gkg-1 to 8.193 gkg-1. The low rates recorded in depth are reported to be related to leaching caused by periodic flooding. These results show that successive floods have a direct effect on the dynamics of the physico-chemical properties of the sediments along the shore.

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Assessment of Physico-chemical Parameters and Nutrient Availability in Soils of Arvi and Karanja Blocks of Wardha district, Maharashtra

Agropedology ◽

10.47114/j.agroped.2016.dec13 ◽

2019 ◽

Vol 26 (2) ◽

Author(s):

Aliza Pradhan ◽

◽

Mahesh Maske ◽

Manoj Sayre ◽

Mahesh Sadatpure ◽

...

Keyword(s):

Organic Carbon ◽

Manganese Content ◽

Chemical Properties ◽

Research Programme ◽

Physical And Chemical Properties ◽

Chemical Parameters ◽

Physico Chemical ◽

Physical And Chemical ◽

Nitrogen Phosphorus ◽

And Chemical Properties

The physical and chemical properties of the soil governs the kand productivity The present study focuses on soil properties and nutrient indices of soils in five different villages of Arvi and Karanja blocks of Wardha district, Maharashtra. A research programme on Leveraging Agriculture for Nutrition in South Asia (LANSA) through framing system is in progress in these villages. The soils of the site are slightly acidic to alkaline, medium to high in organic carbon, deficient in nitrogen, phosphorus and zinc, medium in iron content and sufficient in potassium, copper and manganese content.

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Composting of Calotropis Gigantea Leaves Using Mix Dung of Buffalo, Cow, Goat and Sheep

Current World Environment ◽

10.12944/cwe.10.3.38 ◽

2015 ◽

Vol 10 (3) ◽

pp. 1044-1047

Author(s):

Mayur Shah ◽

Devang Upadhyay ◽

Prateek Shilpkar

Keyword(s):

Electrical Conductivity ◽

Organic Carbon ◽

Total Organic Carbon ◽

Chemical Properties ◽

Monthly Interval ◽

Available Phosphorus ◽

Chemical Parameters ◽

Calotropis Gigantea ◽

Physico Chemical ◽

Buffalo Cow

Under shed at Biogas Research and Extension Centre, Gujarat Vidyapith, Sadara, District- Gandhinagar, Gujarat, India, a composting pit was prepared by bricks and filled with mixture of 10 kg dung (2.5 kg each of cow, buffalo, sheep and goat) and 2 kg leaves of Calotropis gigantea. The mixture was well mixed at 15 days interval and samples were analysed for various physico-chemical properties at monthly interval of composting upto 90 days. Results show that compared to values of various physico-chemical parameters before composting the values of available phosphorus, available potassium and total nitrogen increased by 2.89, 2.18 and 3.15 times whereas content of pH, electrical conductivity, chloride, total organic carbon and ratio of C:N decreased by 1.12, 4.13, 2.68, 2.38 and 8.13 times after composting. The study highlights the conversion of leaves of C. gigantea into valuable compost.

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Soil Physico Chemical Properties and Macronutrients Evaluation during Sowing and after Harvesting of Crop at High Altitude Leh Ladakh India

Defence Life Science Journal ◽

10.14429/dlsj.6.16617 ◽

2021 ◽

Vol 6 (3) ◽

pp. 222-227

Author(s):

Krishna Kumar ◽

Arup Giri ◽

Vijay K. Bharti ◽

Preeti Kumari ◽

Sunil Kumar ◽

...

Keyword(s):

Organic Carbon ◽

High Altitude ◽

Soil Texture ◽

Chemical Properties ◽

Texture Gradient ◽

Chemical Parameters ◽

Sowing Time ◽

Physico Chemical ◽

Significant Difference ◽

In Trans

The present study was aimed to investigate the effect of physico-chemical parameters and soil macro-nutrients to know the nutrient uptake status during sowing time (ST) and after the harvesting (AH) of crops of Leh-Ladakh. In this context, total 55 no. of soil samples were collected from the eleven villages. Thereafter, soil texture, pH, electrical conductivity (EC), total dissolved solids (TDS), organic carbon (OC), nitrogen (N), phosphorus (P), and potassium (K) were analyzed as per the standard methods. The results exhibited variation in different studied parameters at ST and AH, are OC (ST- 1.70 ± 0.11; AH-2.31±0.08), N (ST- 171.54±11.40; AH- 212.03±13.18), P (ST- 75.62±8.16; AH- 96.32±11.56), pH (ST- 8.12±0.05; AH- 8.16±0.06), EC (ST- 0.48±0.04; AH- 0.58±17), TDS (ST-309±22.41; AH-189±16.42) and soil texture gradient (Sand: ST-75.16±1.27 & AH-71.75±1.26, Silt: ST- 18.55±1.09 & AH- 20.66±1.02 and clay: ST- 6.33±0.53 & AH- 7.76±0.63). The comparison of physico-chemical parameters, macronutrients, soil texture, and organic carbon at sowing time (ST) and after harvesting (AH) revealed significant difference in some macronutrients, EC, and organic carbon, whereas no changes were observed in soil texture, pH and phosphorus. Hence, this study highlights the need of physico-chemical parameters management during crops sowing for enhancing macronutrients availability to crops in trans-Himalayan high altitude region.

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The effect of origin and physico-chemical properties on the kinetics of reduction of mixed NiO-Fe2O3 oxides with hydrogen

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19862098 ◽

1986 ◽

Vol 51 (10) ◽

pp. 2098-2108 ◽

Cited By ~ 2

Author(s):

Milan Pospíšil ◽

Jan Topinka

Keyword(s):

Mixed Oxides ◽

Mutual Influence ◽

Spinel Phase ◽

Chemical Properties ◽

Inhibitory Effect ◽

Chemical Parameters ◽

Physico Chemical ◽

Preliminary Annealing ◽

Kinetics Of ◽

Kinetics Of Reduction

We investigated the effect of origin and some physico-chemical parameters on the kinetics of reduction with hydrogen of two series of mixed NiO-Fe2O3 oxides differing by their composition, the character of their precursors (mixed crystalline nitrates and coprecipitated hydroxides) and their decomposition temperature.This effect manifested itself by different magnitudes of specific surfaces of the mixed oxides and coherent regions of present phases as well as by different oxidizing abilities of the surface and differences in morphology and phase composition of corresponding samples in both series investigated. Nonlinear or nonmonotonous composition dependences of physico-chemical parameters investigated point to a mutual influence of individual components, which is also a function of the system origin and which modifies its reactivity during its reduction with hydrogen. The kinetics of the reduction was studied thermogravimetrically at 320-410 °C. The reduction of oxides of the hydroxide origin is catalytically accelerated by primarily reduced nickel, whereas in corresponding samples of the nitrate series, the total NiO is bound to the spinel phase and the reduction is delayed. Experimental IR spectra, the effect of preliminary annealing and DTA of the mixed oxides point to an inhibitory effect of water, which is constitutionally bound in trace admixtures of the goethite phase, on the kinetics of reduction of samples in the hydroxide series.

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Chemical characterization of fine particular matter in Changzhou, China and source apportionment with offline aerosol mass spectrometry

10.5194/acp-2016-883 ◽

2016 ◽

Cited By ~ 2

Author(s):

Zhaolian Ye ◽

Jiashu Liu ◽

Aijun Gu ◽

Feifei Feng ◽

Yuhai Liu ◽

...

Keyword(s):

Trace Elements ◽

Organic Matter ◽

Organic Carbon ◽

Source Apportionment ◽

Major Ions ◽

Chemical Properties ◽

Chemical Characterization ◽

Water Soluble ◽

Traffic Emissions ◽

Aerosol Mass

Abstract. Knowledge on aerosol chemistry in densely populated regions is critical for reduction of air pollution, while such studies haven't been conducted in Changzhou, an important manufacturing base and polluted city in the Yangtze River Delta (YRD), China. This work, for the first time, performed a thorough chemical characterization on the fine particular matter (PM2.5) samples, collected during July 2015 to April 2016 across four seasons in Changzhou city. A suite of analytical techniques were employed to characterize organic carbon / elemental carbon (OC / EC), water-soluble organic carbon (WSOC), water-soluble inorganic ions (WSIIs), trace elements, and polycyclic aromatic hydrocarbons (PAHs) in PM2.5; in particular, an Aerodyne soot particle aerosol mass spectrometer (SP-AMS) was deployed to probe the chemical properties of water-soluble organic aerosols (WSOA). The average PM2.5 concentrations were found to be 108.3 μg m−3, and all identified species were able to reconstruct ~ 80 % of the PM2.5 mass. The WSIIs occupied about half of the PM2.5 mass (~ 52.1 %), with SO42−, NO3− and NH4+ as the major ions. On average, nitrate concentrations dominated over sulfate (mass ratio of 1.21), indicating influences from traffic emissions. OC and EC correlated well with each other and the highest OC / EC ratio (5.16) occurred in winter, suggesting complex OC sources likely including both secondarily formed and primarily emitted OA. Concentrations of eight trace elements (Mn, Zn, Al, B, Cr, Cu, Fe, Pb) can contribute up to 6.0 % of PM2.5 during winter. PAHs concentrations were also high in winter (140.25 ng m−3), which were predominated by median/high molecular weight PAHs with 5- and 6-rings. The organic matter including both water-soluble and water-insoluble species occupied ~ 20 % PM2.5 mass. SP-AMS determined that the WSOA had an average atomic oxygen-to-carbon (O / C), hydrogen-to-carbon (H / C), nitrogen-to-carbon (N / C) and organic matter-to-organic carbon (OM / OC) ratios of 0.36, 1.54, 0.11, and 1.74, respectively. Source apportionment of WSOA further identified two secondary OA (SOA) factors (a less oxidized and a more oxidized OA) and two primary OA (POA) factors (a nitrogen enriched hydrocarbon-like traffic OA and a cooking-related OA). On average, the POA contribution overweighed SOA (55 % vs. 45 %), indicating the important role of local anthropogenic emissions to the aerosol pollution in Changzhou. Our measurement also shows the abundance of organic nitrogen species in WSOA, and the source analyses suggest these species likely associated with traffic emissions, which warrants more investigations on PM samples from other locations.

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Effect of Tillage System and Organic Matter Management Interactions on Soil Chemical Properties and Biological Activity in a Spring Wheat Short-Time Cultivation

Energies ◽

10.3390/en14217451 ◽

2021 ◽

Vol 14 (21) ◽

pp. 7451

Author(s):

Barbara Breza-Boruta ◽

Karol Kotwica ◽

Justyna Bauza-Kaszewska

Keyword(s):

Organic Matter ◽

Biological Activity ◽

Organic Carbon ◽

Spring Wheat ◽

Chemical Properties ◽

Soil Samples ◽

Available Phosphorus ◽

Organic Carbon Content ◽

Tillage System ◽

Short Time

Properly selected tillage methods and management of the available organic matter resources are considered important measures to enable farming in accordance with the principles of sustainable agriculture. Depending on the depth and intensity of cultivation, tillage practices affect soil chemical composition, structure and biological activity. The three-year experiment was performed on the soil under spring wheat (cv. Tybalt) short-time cultivation. The influence of different tillage systems and stubble management on the soil’s chemical and biological parameters was analyzed. Organic carbon content (OC); content of biologically available phosphorus (Pa), potassium (Ka), and magnesium (Mg); content of total nitrogen (TN), mineral nitrogen forms: N-NO3 and N-NH4 were determined in various soil samples. Moreover, the total number of microorganisms (TNM), bacteria (B), actinobacteria (A), fungi (F); soil respiratory activity (SR); and pH in 1 M KCl (pH) were also investigated. The results show that organic matter amendment is of greater influence on soil characteristics than the tillage system applied. Manure application, as well as leaving the straw in the field, resulted in higher amounts of organic carbon and biologically available potassium. A significant increase in the number of soil microorganisms was also observed in soil samples from the experimental plots including this procedure.

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Status and Speciation of Silicon and Its Interaction with Physico-Chemical Properties

Asian Journal of Environment & Ecology ◽

10.9734/ajee/2021/v14i230199 ◽

2021 ◽

pp. 1-11

Author(s):

Isaiah Ufuoma Efenudu ◽

Ehi Robert Orhue ◽

Ogochukwu Jennifer Ikeh ◽

Michael Aimiesomon Erhayimwen ◽

Blessing James

Keyword(s):

Organic Matter ◽

Acidic Medium ◽

Soil Depth ◽

Chemical Properties ◽

Water Soluble ◽

Sequential Fractionation ◽

Soil Redox ◽

Parent Materials ◽

Physico Chemical ◽

Negative Effect

The effectiveness of three different extractants soil mixtures—HCl, HCl + H2S04, and DTPA-TEA, in order to determine Si from soil and the forms of Silicon as influenced by different parent materials under acidic medium. Seven forms of Silicon; namely water soluble, specifically adsorbed, oxides bound, organic matter bound, exchangeable, residual, total viz sequential fractionation. Extractable Si value established in this study was (50.0 mg kg-1), indicating negative effect on plant physiology. The physico-chemical properties decreased significantly with increase in soil depth vs soil parent materials. In addition, the forms of Si in the parent materials decreased in the pattern RES, bound residual fractions > EXC, soluble & exchangeable fractions > OM, organic matter fraction. Among the properties the silt fraction, pH & OM significantly and positively correlated with the forms of silicon, with negative correlation vs clay which maybe due to silicon adsorption by clayey fraction of the soil (redox). Therefore the soil maybe be maintained and conserved for farming activities.

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