scholarly journals Forms of Mobility and Mobile Forms

2021 ◽  
Vol 0 (35) ◽  
pp. 154-160
Author(s):  
Maria Luisa Torres Reyes
Keyword(s):  
Mobile Forms

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

Evaluation of Metal Contents in Correlation with Phytosanitary Treatments at Vineyard

2017 ◽  
Vol 68 (6) ◽  
pp. 1289-1293
Author(s):  
Oana Mihai ◽  
Octav Pantea ◽  
Daniela Roxana Popovici ◽  
Catalina Gabriela Gheorghe
Keyword(s):  
Soil Samples ◽  
Flame Atomic Absorption ◽  
Mobile Forms ◽  
Before And After ◽  
Phytosanitary Treatment ◽  
Zinc Concentrations ◽  
Zinc Levels ◽  
Ph Range ◽  
In The Beginning ◽  
Short Time

The present work aims with the evaluation of copper, manganese and zinc concentrations (mobile forms) from vineyard soil before and after phytosanitary treatment with Curzate Manox and Dithane M-45 compounds, during and after remanence period. Different vineyard soils types were collected at 0-20 cm and 20-40 cm depths. Flame Atomic Absorption Spectroscopy (FAAS) method was used for measurements of the micronutrients. The soil samples were analyzed after 5 and 21 days after treatment application. Since copper is mainly accumulates in the upper layer following fungicidal sprays application, high levels of copper concentrations are obtained. The soil samples exhibits different behavior in terms of manganese and zinc contents. Manganese and zinc levels are classified as medium in the beginning of the experiment (Mn-M0 and Zn-M0), whereas these levels increased in the soil samples (at moments M1- 5 days and M2- 21 days after treatment). This behavior can be due to the Mancozeb decomposition, knowing that Mancozeb decomposes in the pH range 5-9 and it remains short time into the soil.

scholarly journals Geochemical Risks of Diamond Mining in Siberia

2020 ◽  
Vol 5 (1) ◽  
pp. 4
Author(s):  
Yana Legostaeva ◽  
Anna Gololobova ◽  
Vladimir Popov
Keyword(s):  
Chemical Elements ◽  
Particle Size Analysis ◽  
Emission Spectrometry ◽  
Size Analysis ◽  
Spectrophotometric Methods ◽  
Industrial Sites ◽  
Diamond Mining ◽  
Mobile Forms ◽  
Geological Conditions ◽  
Processing Plants

Geochemical risk is caused by the release of hazardous chemicals to the earth surface. Primary diamond deposits are located in difficult mining and geological conditions. They represent natural geochemical anomalies associated with the mineral composition of rocks and groundwater, which contain a number of impurity elements with high toxic properties (Tl, Di, As, Cd, Hg), and increased concentrations of heavy metals (Cu, Zn, Pb, Ti, V and others). The paper presents the physical-geographical and mining-geological conditions of the diamondiferous region, where three large mining and processing divisions operate: Udachninsky, Aikhalsky and Nyurbinsky. pH, organic matter (humus), total nitrogen, and physical clay were identified in the study samples, by using potentiometric, photoelectric colorimetric, spectrophotometric methods, and pipette method for particle size analysis. Gross and mobile forms of trace elements were determined by atomic absorption and emission spectrometry. The groups of elements were identified that determined the natural and man-made anomalies. The accumulation of Cr, Ni, and Co determines the influence of kimberlite magmatism in general. Cu, Sr, and Li are accumulated in the soils of the Daldyn-Alakit diamond-bearing region. Increased concentrations of Mn and Cu are typical in the soils of the Sredne-Markhinsky diamond-bearing region. An assessment of the ecological and geochemical state of the study areas was carried out according to the indicator of total pollution (Zc), which is the sum of the excess of the concentration coefficients of chemical elements accumulating in anomalies. Areas of pollution and zones of the greatest risk are localized, which occupy up to 75% of the total area of industrial sites. They confined to quarry-dump complexes and to areas of impact of tailing dumps of processing plants.

scholarly journals Chemical Speciation and Potential Mobility of Heavy Metals in the Soil of Former Tin Mining Catchment

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
M. A. Ashraf ◽  
M. J. Maah ◽  
I. Yusoff
Keyword(s):  
Chemical Speciation ◽  
Extraction Procedure ◽  
Optical Emission ◽  
Residual Fraction ◽  
Emission Spectrometry ◽  
Trophic Chain ◽  
Toxic Risk ◽  
Mobile Forms ◽  
Average Potential ◽  
Potential Mobility

This study describes the chemical speciation of Pb, Zn, Cu, Cr, As, and Sn in soil of former tin mining catchment. Total five sites were selected for sampling and subsequent subsamples were collected from each site in order to create a composite sample for analysis. Samples were analysed by the sequential extraction procedure using optical emission spectrometry (ICP OES). Small amounts of Cu, Cr, and As retrieved from the exchangeable phase, the ready available for biogeochemical cycles in the ecosystem. Low quantities of Cu and As could be taken up by plants in these kind of acidic soils. Zn not detected in the bioavailable forms while Pb is only present in negligible amounts in very few samples. The absence of mobile forms of Pb eliminates the toxic risk both in the trophic chain and its migration downwards the soil profile. The results also indicate that most of the metals have high abundance in residual fraction indicating lithogenic origin and low bioavailability of the metals in the studied soil. The average potential mobility for the metals giving the following order: Sn > Cu > Zn > Pb > Cr > As.

scholarly journals A Mixture of Green Waste Compost and Biomass Combustion Ash for Recycled Nutrient Delivery to Soil

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 641
Author(s):  
Kristina Buneviciene ◽  
Donata Drapanauskaite ◽  
Romas Mazeika ◽  
Jonas Baltrusaitis
Keyword(s):  
Heavy Metals ◽  
Solid Waste ◽  
Wheat Yield ◽  
Biomass Combustion ◽  
First Year ◽  
Nutrient Delivery ◽  
Green Waste ◽  
Mobile Forms ◽  
Solid Residuals ◽  
Heavy Metal Release

The use of major nutrient-containing solid residuals, such as recycled solid waste materials, has a strong potential in closing the broken nutrient cycles. In this work, biofuel ash (BA) combined with green waste compost (GWC) was used as a nutrient source to improve soil properties and enhance wheat and triticale yields. The main goal was to obtain the nutrient and heavy metal release dynamics and ascertain whether GWC together with BA can potentially be used for concurrent bioremediation to mitigate any negative solid waste effects on the environment. Both BA and GWC were applied in the first year of study. No fertilization was performed in the second year of the study. The results obtained in this work showed the highest spring wheat yield when the GWC (20 t ha−1) and BA (4.5 t ha−1) mixture was used. After the first harvest, the increase in the mobile forms of all measured nutrients was detected in the soil with complex composted materials (GWC + BA). The content of heavy metals (Cd, Zn, and Cr) in the soil increased significantly with BA and all GWC + BA mixtures. In both experiment years, the application of BA together with GWC resulted in fewer heavy metals transferred to the crops than with BA alone.

scholarly journals CHANGING PROPERTIES OF THE MESOTROPHIC PEAT SOIL IN GRAIN-ROW CROP ROTATION UNDER THE INFLUENCE OF FERTILIZERS AND LIME

2012 ◽  
pp. 56-67
Author(s):  
I. I. Lytkin
Keyword(s):  
Soil Fertility ◽  
Crop Rotation ◽  
Peat Soil ◽  
Row Crop ◽  
Mobile Forms

, mobile forms of P and K (the latter effects considerably the soil fertility at lime doses of more than 0.50 Hг).

scholarly journals Рівень мікроелементного складу ґрунту, води та кормів у ФГ «Радвань Нова», Пустомитівського району, Львівської області

2017 ◽  
Vol 19 (77) ◽  
pp. 105-109
Author(s):  
L. Mykytyn ◽  
V. Binkevych ◽  
Y. Vachko
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Soil Water ◽  
Maximum Permissible Concentration ◽  
Average Content ◽  
Diet Supplements ◽  
Mobile Forms ◽  
Actual Content ◽  
Water Feed ◽  
Soil And Water

The article highlights the results of the research content of mobile forms of certain trace elements in the water for watering sheep, pasture soils and feed of «Radvan Nowa» farm, Beregy village, Pustomyty district, Lviv region. The aim of research was to examine the actual content of certain trace elements (Cu, Fe, Mn, Zn, Co, Pb, Ni, Cd), determine the deviation of studied mobile forms of trace elements from the maximum permissible concentration (MPC) and to establish the suitability of soil and water in the area for livestock. Also determine the trace elements availability of feed on the farm. Reseived results indicate that the water in this sector meets sanitary standards for the content of trace elements studied and can be used for watering sheep without any reservations and ground land suitable for future use and livestock. The content of trace elements in the soil – water – feed on the «Radvan Nowa» farm, Pustomyty district, Lviv region is the insufficient level that makes it impossible to use the available forage in feeding sheep without further introduction of corrective diet supplements and premixes. The lowest content in the feed was Copper, discovered that in the rough and succulent feed was at an availability of 21.1% from the norm, and in grain feed grain – 6.5% of normal. The highest level of availability of feed was Zinc, observed that in the rough and succulent feed average content 61.8% of normal and the grain was at 76.4%. Further findings will be used to correct diets and explore new trace element supplements for lambs for fattening in the summer.

scholarly journals YIELD OF PERENNIAL GRASSES AND SOIL FERTILITY OF SOD-PODZOLIC SOIL IN CASE OF LONG-TERM APPLICATION OF MINERAL FERTILIZERS

2021 ◽  
Vol 250 ◽  
pp. 71-77
Author(s):  
A. Yu. Gavrilova ◽  
◽  
A. M. Konova ◽  
Keyword(s):  
Perennial Grasses ◽  
Mineral Fertilizers ◽  
Yield And Quality ◽  
Mobile Forms ◽  
Unit Dose ◽  
Phosphorus And Potassium ◽  
Higher Doses ◽  
Positive Effect

The article considers the effect of increasing doses and various combinations of mineral fertilizers applied to the cover crop on the yield and quality of a mixture of perennial grasses of two - years use, as well as the effect of fertilizers on the agrochemical parameters of sod-podzolic light loamy soil. The objects of the study were Stodolich meadow clover and Leningradskaya 204 meadow timothy grass. The studies were carried out in two crop rotations - with standard and reduced single doses of mineral fertilizers. The research results showed that in the years (VIII rotation) when the unit dose of fertilizers was increased to N20P20K25, the yield of perennial grasses was higher compared to the harvest in the VII rotation. The most appropriate dose in the VII rotation on perennial grasses of the 1st year was N30P30K45, on grasses of the 2nd year - doses of N30P30K45 and N40P40K60. In the VIII rotation, the highest yield of perennial grasses of the 1st year of use was obtained at a dose of N160P160K200 (8.4 t / ha), of grasses of the 2nd year of use at doses of N80P80K100 and N100P100K125 (6.5 t / ha). Positive effect of increasing doses of mineral fertilizers on the content of soil organic matter has been noted. On the contrary, the soil acidity increased from 4.7 to 4.3 units with an increase of mineral doses. Higher doses of fertilizers increased the content of mobile forms of phosphorus and potassium in the soil.

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