EVALUATION OF CONTENT OF SELECTED HEAVY METALS IN SOILS OF SHOOTING RANGES

2021 ◽  
Vol 158 (3-4) ◽  
pp. 91-110
Author(s):  
Piotr TRADECKI ◽  
Wojciech Pałka
Keyword(s):  
Heavy Metals ◽  
Ground Surface ◽  
Complex Issue ◽  
The Future ◽  
The Relationship ◽  
Heavy Metals In Soils ◽  
Shooting Ranges

The paper describes analyses of soils taken from open shooting ranges to find pollutants in the form of selected heavy metals. Test samples were taken from closed shooting ranges located in Wloclawek commune. During the investigations the content of following elements was identified: Zn, Pb, Cd, Cu, Ni, Co, Fe, As. The characterization of investigated localizations was also made with evaluation of samples of soils according to the Regulation of the Minister of Environment from 01 September, 2016 on the assessment of ground surface pollution. Studies confirm the relationship occurring between the effects of carried out shooting activities and the degree of accumulation of selected heavy metals elements in the soil of open shooting ranges. Indications show that this is sometimes a very complex issue and if neglected it can cause in the future a serious threat.

Indication of Magnetic Susceptibility to Heavy Metal Pollution in the Typical Contaminated Areas of Southern Jiangsu Province

2013 ◽  
Vol 368-370 ◽  
pp. 380-385
Author(s):  
Cai Qiu Wu ◽  
Xu Yin Yuan ◽  
Tian Yuan Li ◽  
Xue Qiang Zhao ◽  
Qing Ling Liao
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Magnetic Susceptibility ◽  
Industrial Wastewater ◽  
Primary Component ◽  
Poor Correlation ◽  
Close Relationship ◽  
Southern Jiangsu ◽  
The Relationship ◽  
Heavy Metals In Soils

Magnetic susceptibility characteristics as well as the relationships between magnetic susceptibility and As, Hg, Cu, Pb, Cd, Cr were investigated in the typical contaminated areas of southern Jiangsu Province.It was found that the correlations between magnetic susceptibility and Cu, Pb were relatively significant, while the correlations between magnetic susceptibility and Cd, As were weak. Heavy metals in soils from industrial wastewater discharge were associated with the magnetic susceptibility, which showed better correlation than other pollution sources.The primary component analysis showed heavy metals in soils from Nanjiao area were mainly the dust from metallic factory , Source of heavy metals in the soils of Ehu area showed the close relationship with the industrial wastewater source in this area.Characteristics of heavy metals in Dingshu area were associated with the source of the mixed wastewater.It is apparent that the different sources will lead to the changes of the correlation between heavy metals and magnetic susceptibility. Generally,the relationship between heavy metal and susceptibility is good in the soils irrigated with industrial wastewater, and metals from the mixed wastewater show a relatively poor correlation with the magnetic susceptibility.

scholarly journals Properties, processes and modes characterizing the state of heavy metals in soils

2021 ◽  
Vol 285 ◽  
pp. 06007
Author(s):  
Andrey Sorokin ◽  
Sergey Belopukhov ◽  
Vladimir Gukalov ◽  
Vitaly Savich ◽  
Ravil Baibekov ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Thermal Effects ◽  
Podzolic Soil ◽  
Pair Correlation ◽  
Complex Compounds ◽  
The State ◽  
Energy Assessment ◽  
The Relationship ◽  
Kinetics Of ◽  
Heavy Metals In Soils

The study proves the expediency of assessing the state of heavy metals in soils by the fractional composition of soil compounds, processes and modes. An informational and energy analysis of the state of heavy metals in soils was carried out. The need for an assessment of the kinetics of their desorption from soils was substantiated. The CH3 COONH4 solution displaced 0.3 mg/l Mn from the sod-podzolic soil within 10 minutes, 0.8 mg/l Mn – within 1 hour, 3.3 mg/l Mn – within 1 day, and 12.9 mg/l – within one week; 0.18 mg/L Pb was desorbed within 10 minutes, up to 0.59 mg/l Pb was desorbed within one day. The depositing capacity of soils is an important parameter. Heavy metals in soils are bound into positively and negatively charged systems at рКН of 2-10. In the sod-podzolic soil, the content of NiLn+ was 13.3 mg/l and NiLn-- 1.9 mg/l. According to the informational assessment, heavy metals in soils are characterized by the relationship with other soil properties and change along the soil profile, which was determined from the equations of pair correlation and multiple regression. According to the energy assessment, heavy metals in soils are characterized by thermal effects of their sorption and desorption and have positively and negatively charged complex compounds and air ions

Characterization of heavy metals in soils from typical tobacco cultivated areas, China

2016 ◽  
Vol 36 (2) ◽  
pp. 483-488 ◽  
Author(s):  
Beisen Lin ◽  
Huajun Gao ◽  
Hongmin Lai ◽  
Chunhua Li ◽  
Quan Wang
Keyword(s):  
Heavy Metals ◽  
Heavy Metals In Soils

scholarly journals Fenomenología de la polis y torsión del Dasein: dialéctica y hermenéutica en la temprana interpretación gadameriana de la ética platónica

Daímon ◽  
2021 ◽  
pp. 63-80
Author(s):  
Facundo Norberto Bey
Keyword(s):  
Martin Heidegger ◽  
Philosophical Hermeneutics ◽  
Critical Dialogue ◽  
Future Developments ◽  
Political Work ◽  
The Future ◽  
The Relationship ◽  
Hans Georg Gadamer

El objetivo de este artículo es presentar y analizar las principales hipótesis de Hans-Georg Gadamer en su libro de 1931 Platos dialektische Ethik. Phänomenologische Interpretationen zum Philebos en relación a las nociones de pólis, aretḗ, tó agathṓn y Dasein. Luego, se intentará demostrar que en este trabajo temprano de Gadamer se formula la primera producción filosófico-política de relevancia del autor, expresada en forma de diálogo crítico con Martin Heidegger, a partir de las nuevas posibilidades interpretativas que la filología y fenomenología le abrieron para el estudio de Platón y su filosofía. Esta obra temprana, además, habría sentado las bases de los futuros desarrollos de la hermenéutica filosófica, en particular, en relación a la caracterización de la estructura dialógico-dialéctica de la comprensión y al vínculo entre éthos, práxis y lógos. The aim of this paper is to present and analyse the main hypotheses of Hans-Georg Gadamer in his 1931 book Platos dialektische Ethik. Phänomenologische Interpretationen zum Philebos regarding the notions of pólis, aretḗ, tó agathṓn y Dasein. Then, it will be attempted to show that in this early book of Gadamer is his first relevant philosophical-political work, expressed in the form of a critical dialogue with Martin Heidegger, departing from the new interpretative possibilities that philology and phenomenology opened to Gadamer’s studies on Plato’s philosophy. This early work, moreover, would have laid the foundations for the future developments of philosophical hermeneutics, in particular, regarding the characterization of the dialectical-dialogical structure of understanding and the relationship among éthos, práxis and lógos.

scholarly journals Heavy metals in soils and mosses-epiphytes of the Leninsky district of the city Izhevsk

2021 ◽  
Vol 4 (46) ◽  
pp. 2-2
Author(s):  
Alexander Saakian ◽  
◽  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Air Pollution ◽  
Magnetic Susceptibility ◽  
Metal Pollution ◽  
Total Content ◽  
Pleurozium Schreberi ◽  
The Relationship ◽  
The City ◽  
Heavy Metals In Soils

The article presents the results of studies on the assessment of heavy metal pollution of soils and epiphytes in of the city of Izhevsk. Objects of research: soils of near-trunk circles of black poplar (Populus nigra L.) and epiphytic moss of Schreber's pleurotium (Pleurozium schreberi (Willd. Ex Brid.) Mitt.). To assess the pollution, the magnetic susceptibility of soils and mosses was determined, as well as the average total content of heavy metals in the samples under study. The relationship between the content of heavy metals and the magnetic susceptibility of soils and epiphytes has been determined. A correlation was revealed between the total content of Zn, Cr, Fe, V in soils and in mosses, which indicates air pollution of soils. Keywords: MAGNETIC SENSITIVITY, HEAVY METALS, MOSSES-EPIPHYTES, AIR POLLUTION

The Relationship between Bulk and Mobile Forms of Heavy Metals in Soils of Kursk

2018 ◽  
Vol 51 (1) ◽  
pp. 112-119 ◽  
Author(s):  
N. P. Nevedrov ◽  
E. P. Protsenko ◽  
I. V. Glebova
Keyword(s):  
Heavy Metals ◽  
Mobile Forms ◽  
The Relationship ◽  
Heavy Metals In Soils

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

Microstructural Characterization of Au-Ge-Ni based ohmic contacts to GaAs/AlGaAs modfet device

1987 ◽  
Vol 45 ◽  
pp. 326-327
Author(s):  
A.K. Rai ◽  
A.K. Petford-Long ◽  
A. Ezis ◽  
D.W. Langer
Keyword(s):  
Contact Resistance ◽  
Ohmic Contact ◽  
Ohmic Contacts ◽  
Microstructural Characterization ◽  
Almost Everywhere ◽  
Spacer Layer ◽  
Good Contact ◽  
The Relationship ◽  
Lower Contact

Considerable amount of work has been done in studying the relationship between the contact resistance and the microstructure of the Au-Ge-Ni based ohmic contacts to n-GaAs. It has been found that the lower contact resistivity is due to the presence of Ge rich and Au free regions (good contact area) in contact with GaAs. Thus in order to obtain an ohmic contact with lower contact resistance one should obtain a uniformly alloyed region of good contact areas almost everywhere. This can possibly be accomplished by utilizing various alloying schemes. In this work microstructural characterization, employing TEM techniques, of the sequentially deposited Au-Ge-Ni based ohmic contact to the MODFET device is presented.The substrate used in the present work consists of 1 μm thick buffer layer of GaAs grown on a semi-insulating GaAs substrate followed by a 25 Å spacer layer of undoped AlGaAs.

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