Glazes of the SiO2-P2O5-CaO-MgO-K2O system containing B, Fe or Cu which are acting as microelemen... more Glazes of the SiO2-P2O5-CaO-MgO-K2O system containing B, Fe or Cu which are acting as microelements carriers for agrotechnical applications were studied. The solubility of the glazes in 2 mass% citric acid solution was studied by chemical analysis (ICP-AES, EDS) and SEM observations. It has been found that the chemical activity of this kind of materials is related to the strengths of the oxygen bridges combining these components in the glass structure.
The immobilization of lead and cadmium contamination in soils by precipitation of non-assimilable... more The immobilization of lead and cadmium contamination in soils by precipitation of non-assimilable for plants Pb- and Cd-phosphates was considered. A glassy fertilizer of the controlled release rate of the nutrients for plants as a source of phosphate anions was applied. Thermal analysis methods (TG/DTG/DTA) were used for the identication of components of Pb- and Cd-precipitates, which, being in statu nascendi, have the nonstoichiometric composition and disordered crystallographic structure difcult to identify by XRD method. The negative role of Pb and Cd complexing citric acid solution simulating the natural soil conditions, which inhibits the Pb- and Cd-phosphates formation, was stated.
Interesuj cym mody katorem struktury szklistej jest mangan, ktory znalaz zastosowanie rownie w hu... more Interesuj cym mody katorem struktury szklistej jest mangan, ktory znalaz zastosowanie rownie w hutnictwie, jako dope niacz i dodatek stopowy podnosz cy twardo i odporno na cieranie stopow elaza, a poza tym stosowany jest w postaci zwi zkow chemicznych do wyrobu rodkow dezynfekuj cych czy w analizie chemicznej [1]. Zwi zki manganu, obok elaza i miedzi, nale do najcz ciej stosowanych barwnikow masy szklanej. Najcz ciej i najpowszechniej stosowany jest naturalny dwutlenek manganu (MnO2), nazywany braunsztynem. Szk a barwione zwi zkami manganu przepuszczaj oprocz promieni oletowych (zakres 3800–4400 A) rownie pewn ilo promieni granatowych (zakres 4400–4800 A) oraz czerwonych (zakres 6200-7500 A), poch aniaj natomiast zupe nie promienie zielone (zakres 5000–5600 A). Dlatego te barwa szkie mo e przybiera odcie niebieski lub czerwony [2]. W zwi zku z szerokimi mo liwo ciami zastosowania tego pierwiastka Wp yw manganu na trwa o termiczn szkie krzemianowo-fosforanowych
Glazes of the SiO2-P2O5-CaO-MgO-K2O system containing B, Fe or Cu which are acting as microelemen... more Glazes of the SiO2-P2O5-CaO-MgO-K2O system containing B, Fe or Cu which are acting as microelements carriers for agrotechnical applications were studied. The solubility of the glazes in 2 mass% citric acid solution was studied by chemical analysis (ICP-AES, EDS) and SEM observations. It has been found that the chemical activity of this kind of materials is related to the strengths of the oxygen bridges combining these components in the glass structure.
The immobilization of lead and cadmium contamination in soils by precipitation of non-assimilable... more The immobilization of lead and cadmium contamination in soils by precipitation of non-assimilable for plants Pb- and Cd-phosphates was considered. A glassy fertilizer of the controlled release rate of the nutrients for plants as a source of phosphate anions was applied. Thermal analysis methods (TG/DTG/DTA) were used for the identication of components of Pb- and Cd-precipitates, which, being in statu nascendi, have the nonstoichiometric composition and disordered crystallographic structure difcult to identify by XRD method. The negative role of Pb and Cd complexing citric acid solution simulating the natural soil conditions, which inhibits the Pb- and Cd-phosphates formation, was stated.
Interesuj cym mody katorem struktury szklistej jest mangan, ktory znalaz zastosowanie rownie w hu... more Interesuj cym mody katorem struktury szklistej jest mangan, ktory znalaz zastosowanie rownie w hutnictwie, jako dope niacz i dodatek stopowy podnosz cy twardo i odporno na cieranie stopow elaza, a poza tym stosowany jest w postaci zwi zkow chemicznych do wyrobu rodkow dezynfekuj cych czy w analizie chemicznej [1]. Zwi zki manganu, obok elaza i miedzi, nale do najcz ciej stosowanych barwnikow masy szklanej. Najcz ciej i najpowszechniej stosowany jest naturalny dwutlenek manganu (MnO2), nazywany braunsztynem. Szk a barwione zwi zkami manganu przepuszczaj oprocz promieni oletowych (zakres 3800–4400 A) rownie pewn ilo promieni granatowych (zakres 4400–4800 A) oraz czerwonych (zakres 6200-7500 A), poch aniaj natomiast zupe nie promienie zielone (zakres 5000–5600 A). Dlatego te barwa szkie mo e przybiera odcie niebieski lub czerwony [2]. W zwi zku z szerokimi mo liwo ciami zastosowania tego pierwiastka Wp yw manganu na trwa o termiczn szkie krzemianowo-fosforanowych
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