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Geology, Geophysics and Environment
2012 Vol. 38, no. 4 545--546
EN Pentavalent arsenic and lead are presently considered to be one of the major soil pollutants. Theseand widespread elements t occur in very low concentrations. Their natural concentrations in soils and waters are the results of leaching from rocks containing Pb and As(V) minerals. However, concentrat[...]
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Przegląd Odlewnictwa
PL Metale w średniowieczu miały duże znaczenie dla gospodarki europejskiej, a rozwój ekonomiczny regionów w znacznym stopniu opierał się na pozyskiwaniu i handlu kruszcami. W Małopolsce i na Górnym Śląsku działalność człowieka, o charakterze wydobywczym i produkcyjnym, związana z występowaniem surowców[...]
EN Metals had in Middle Ages a great importance for the european economy, and the economic development of the regions based in essential degree on the mining of ores and on the trade in them. The human activity of the mining and production character and connected with the appearance of the natural raw [...]
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80%
Geology, Geophysics and Environment
2012 Vol. 38, no. 4 525--526
EN The Silesian-Cracow lead and zinc deposits are occurring mainly within the so-called ore-bearing dolomites of the Middle Triassic (Musehelkalk) and by the most authors are classified as Mississippi Valley-type deposits (Sass-Gustkiewicz et al. 1982, Wodzicki 1987, Leach et al. 2001, 2010). Coaly acc[...]
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Optica Applicata
2006 Vol. 36, nr 4 s. 529--533
EN Studies of the hyperfine structure and the isotope shifts in the 461.9 nm (1S0–3P1) magnetic-dipole line of Pb I are presented. As a light source the electrodeless discharge tube was used. The high resolution spectral apparatus consisted of a silver coated Fabry–Perot etalon and a grating spectrogra[...]
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80%
International Journal of Occupational Safety and Ergonomics
2007 Vol. 13, No. 2 137--145
EN Lead is an important constituent widely used in different industrial processes. For evaluation of workers’ exposure to trace toxic metal of Pb (II), solid-phase extraction (SPE) was optimized. SPE using mini columns filled with XAD-4 resin was developed with regard to sample pH, ligand concentration[...]
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Polish Journal of Chemistry
EN Membrane based separation processes represent a sophisticated way to limit industrial wastes in the natural environment. Crown ethers have been recognized as very effective class of compounds to achieve selective separation of heavy metal ions from aqueous solutions. Lead (Pb) is a well known toxic [...]
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Bulletin of the Polish Academy of Sciences. Earth Sciences
EN Analyses of lead isotopic composition in industrial materials (tetraethyl lead, coal, ash and slag from coal combustion, and fragment of lead battery cell and lead foil) were undertaken. It has been found that there are significant differences among isotopic signatures of their constituent lead and,[...]
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Obróbka Plastyczna Metali
PL W artykule przedstawiono wyniki badań plastometrycznych ołowiu w gatunku Pb1. Na wykresach zestawiono krzywe płynięcia tego metalu w temperaturach 20, 40 i 60°C, uzyskane przy prędkościach odkształcenia od 0,1, 1 i 10 s[do potęgi -1] w zakresie intensywności odkształcenia od O do 1. Korzystając z me[...]
EN Results of compression tests of Pb1 lead grade are presented in this paper. Experimental works were curried out at: temperature of 20, 40 and 60°C, strain rate of 0.1, 1 and 10 s [ -1st power of s], effective strain of 0- 1. Flow curves of analyzed metal are given on figures. Also equations (2) - (9[...]
9
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Archives of Metallurgy
PL W artykule podano krótki przegląd metod ługowania rud i koncentratów miedzi za pomocą reagentów o charakterze kwaśnym i alkalicznym. Równocześnie zwrócono uwagę na charakter reakcji przebiegających w roztworach w trakcie roztwarzania polidyspersyjnego materiału. W oparciu o znane prace przedstawiono[...]
EN This paper presents a brief review of methods of leaching copper ores and concentrates with acidic and alkaline reagents, and addresses the nature of the reactions occurring during dissolution of polydispersed material. Based on known studies, a method is proposed to calculate the reaction-rate cons[...]
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International Letters of Chemistry, Physics and Astronomy
2014 Vol. 8 56--63
EN The aim of this work is to detect and estimate the level of selected heavy metals (copper and lead) in milk and milk products in Chittagong City Corporation Areas of Bangladesh. The most important milk and milk products that are likely to be an important contributor to heavy metal exposure was selec[...]
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Materials Science Poland
EN A study into the effect of Pb-bearing compounds on hydration of cement has been carried out, using simplified cement models, including models for alite and gypsum. The kinetics of hydration of these compounds was evaluated by the calorimetry method. The microstructure has been characterized, and X-r[...]
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Oceanological and Hydrobiological Studies
EN Lead and cadmium levels were determined in the meat tissues of roach, bream, and carp netted in a lake and in fish ponds threatened by a pesticide tomb and in control basins in northeastern Poland. Concentrations in roach ranged from 20 to 124 ěg kg-1 of Pb and from 1 to 19 ěg kg-1 of Cd. In bream t[...]
13
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Oceanological and Hydrobiological Studies
EN This study was conducted in the submontane and eutrophic Dobczyce Reservoir (southern Poland). Cadmium and lead concentrations in the water and sediment were relatively low. The partitioning coefficient (Kd) indicated that dissolved Cd and Pb dominated in the water column at depths of 1 and 15 m, an[...]
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Polish Journal of Ecology
EN Concentrations of zinc, cadmium and lead in ionic forms and in forms bound to humic substances isolated from ground and surface waters of drainage catchment were analysed. Higher total concentrations of examined metals were found in ground waters as opposed to surface waters. Particularly clear diff[...]
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Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska
PL Autor artykułu podjął się statystycznej oceny wpływu zanieczyszczeń ołowiem gleby na jego zawartość w bulwach ziemniaków na podstawie wyników analiz chemicznych z lat 1992-1996 przeprowadzonych przez Okresową Stację Chemiczno-Rolniczą w Opolu. Za pomocą zastosowanych jednokierunkowych modeli klasyfi[...]
EN The quality of agricultural food products is a matter of constant government and public concern. This paper presents the results of an ecological analysis concerning the relation between lead concentrations in soil and in potato bulbs. The one-way classification models: the classical ANOVA and the B[...]
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Journal of Ecological Engineering
2015 Vol. 16, nr 1 127--134
EN Aquatic ecosystems are a valuable part of natural environment. The increasing level of pollution in waters transforming biocoenoses and other adverse effects of the impact of toxic substances have contributed to the development of biological monitoring. The aim of the study was to determine the chan[...]
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Journal of Ecological Engineering
2015 Vol. 16, nr 2 110--115
EN The effect of lead ions of the concentrations within the range of 15–1000 m dm-3 on the physiological reaction of common osier var. Jorr was examined. The content of assimilation pigments, the rate the CO2Water assimilation, transpiration, the indices of relative water content [...]
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Journal of Ecological Engineering
2017 Vol. 18, nr 1 132--138
EN In the samples of fresh dehydrated sewage sludges from municipal treatment plants in Grajewo, Bielsk Podlaski, Sokółka, Dąbrowa Białostocka, Knyszyn, Mońki, Augustów, Suwałki, Sejny and Suchowola the following determinations were made: pH, pseudo-total content of Pb, Cd and Cr, organic matter and dr[...]
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Journal of Ecological Engineering
2017 Vol. 18, nr 1 139--146
EN In 2011–2013, a field experiment was carried out at the Experimental Station of Cultivar Evaluation in Szczecin-Dąbie. The experiment aimed at determining the effect of slurry without and with addition of increasing PRP Fix preparation doses on the crop yields and some of their qualitative traits. T[...]
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Infrastruktura i Ekologia Terenów Wiejskich
2016 nr IV/2 1337--1346
EN The aim of the study was to compare the levels of cadmium and lead in livers, kidneys and wool / hair / of sheep and goats reared in the vicinity of the steelworks in Nowa Huta in Kraków and in the control field, Rożniatów, in which there was no emitters of heavy metals. Samples were collected post [...]
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