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Wyświetlanie 1-4 z 4
Tytuł:
Nickel in the environment
Autorzy:
Harasim, P.
Filipek, T.
Powiązania:
https://bibliotekanauki.pl/articles/14480.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
environment
nickel
micronutrient
heavy metal
allergen
Opis:
The importance of nickel (Ni) in the environment is an issue that is gaining broader recognition. While nickel is an element essential for plants, it is also a heavy metal. Nickel is a component of nine metalloenzymes, including urease, which participates in urea hydrolysis. It also helps some plants to protect themselves against pathogens and herbivorous insects. There are many sources of Ni in the environment, which can be a problem because at higher concentrations this element is toxic to plants and other living organisms. Therefore, standards have been defined for the Ni content in air, water, soil and plants. Its content is monitored in the air. More and more frequently, attention is paid to this element as an allergen in humans. In the world, attempts have been made to phytoextract nickel from contaminated soils using nickelphilous plants, the so-called hyperaccumulators, and even to recover the metal from these plants by so-called phytomining. On the other hand, nickel-containing fertilizers are marketed and used in cases of nickel deficiency in plants. In industry, this element is primarily used for the production of steel and alloys. The most recent application of nickel is related to graphene, which was invented 10 years ago. Although nickel contamination does not occur in Poland, we cannot rule out this risk in the future. Thus, it is important to monitor the fate of nickel in the environment.
Źródło:
Journal of Elementology; 2015, 20, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The sensitivity of Brassica napus ssp. oleifera to cadmium (Cd) and lead (Pb) contamination at different pH of mineral and organic soils
Autorzy:
Domanska, J.
Badora, A.
Filipek, T.
Powiązania:
https://bibliotekanauki.pl/articles/15732.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
In a model pot experiment, the influence of elevated levels of cadmium and lead in soils on rapeseed (Brassica napus L.) growth, development, biomass (g DM pot-1), cationic ratios (Cd2+:- Ca2+, Cd2+:Mg2+, Pb2+:Ca2+, Pb2+:Mg2+) and tolerance index Ti, has been examined. The tested soils were: two organic soils (acidic and neutral) and a mineral one with pH differentiated into neutral and acidic. The metals were spiked into soils in doses of 10 mg Cd kg–1 DM and 100 mg Pb kg–1 DM of soil. Under the applied doses, the sensitivity of rapeseed to Cd was higher than to Pb. The application of Cd caused visible symptoms of chlorosis on plant leaves and a statistically significant (p < 0.01, p < 0.05) decrease in aerial biomass. The influence of Pb on B. napus biomass yield was not significant. The soil type and its reaction differentiated the biomass of plants in the following decreasing order: mineral neutral > organic neutral > mineral acidic > organic acidic. The Cd added to soil increased the Cd2+:Ca2+ and Cd2+:Mg2+ ionic ratios, while Pb caused an increase in Pb2+:Ca2+ and Pb2+:Mg2+ ratios compared to the control. The significantly higher values for the above ions ratios were recorded in rapeseed roots rather than in shoots. The results showed a crucial role of the soil type in determining the milimolar ionic relations in B. napus plants. The plant was more vulnerable to chemical composition changes in contaminated treatments comparing to control when grown on mineral soils (both acidic and neutral) than on organic ones. The high Ti value proves generally low sensitivity of B. napus to soil Cd and Pb contamination.
Źródło:
Journal of Elementology; 2015, 20, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Content of magnesium and calcium in cultivated plants depending on various soil supply with nitrogen, potassium, magnesium and sulfur
Autorzy:
Brodowska, M. S.
Filipek, T.
Kurzyna-Szklarek, M.
Powiązania:
https://bibliotekanauki.pl/articles/962671.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
In view of the important role of magnesium and calcium in yield formation, this study has been undertaken to analyze the Mg and Ca content in winter forms of oilseed rape and wheat as well as in spring barley in the context of a certain deficiency of some nutrients (N, K, Mg, S) in the plant growth environment. The present study also evaluated the effect of meteorological conditions on the magnesium and calcium content in the test plants. The research hypothesis is that mineral fertilization and meteorological conditions significantly affect the content of magnesium and calcium in the test plants. A four-year, two-factor experiment was established on soil with the particle-size distribution of silt loam. It was shown that the investigated experimental factors (mineral fertilization and years of experiment) resulted in distinctly seen differences in the magnesium and calcium content in the test plants. In winter oilseed rape, this study found a significant decrease in the content of magnesium in seeds when there was a deficity of this nutrient in fertilization, and a decrease in the calcium content in the generative organs if nitrogen, potassium and magnesium were excluded from a fertilizer dose. A significant reduction in the calcium content in winter wheat straw was associated with nitrogen deficiency in fertilization, whereas the lack of potassium in fertilization resulted in a significant increase in the calcium content in winter wheat straw. In the case of spring barley, nitrogen deficiency in the plant growth environment resulted in a significant decrease in the calcium content in the vegetative organs, deficiency of magnesium contributed to a significant decrease in its concentration in grain and straw, while the lack of sulfur caused a significant reduction in the Mg content and a significant increase in the Ca content in straw. The meteorological conditions during the experiment had a significant effect on the magnesium and calcium content in the test plants.
Źródło:
Journal of Elementology; 2017, 22, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the content of selected heavy metals in products of plant origin as a result of differentiated ratios of fertilizers
Autorzy:
Brodawska, M.S.
Kurzyna-Szklarek, M.
Filipek, T.
Powiązania:
https://bibliotekanauki.pl/articles/13671.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:
Journal of Elementology; 2018, 23, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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